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Japanese Naval and Merchant Shipping Losses

During World War II by All Causes

Cover image.

Japanese Naval and Merchant Shipping Losses
During World War II by All Causes

Prepared by
The Joint Army-Navy Assessment Committee
NAVEXOS P 468

February 1947

Contents

  Page
Foreword ii
Graphs of Japanese Shipping Losses iv-v
Summaries of Japanese Shipping Losses vi-x
Chronological List of Japanese Merchant Vessel Losses* 29-99
Alphabetical Index 100-123
Japanese Shipping Lost by United States Submarines Appendix

* Where the tonnage of a vessel is only approximately known it is followed by an "e".

Foreword

In January 1943 the Chief of Staff, U.S. Army, and Commander-in-Chief, U.S. Navy agreed that the formation of a joint committee to assess enemy Naval and merchant shipping losses during World War II would be desirable. Accordingly the JOINT ARMY-NAVY ASSESSMENT COMMITTEE was appointed for this purpose. This committee consisted of representatives of the Navy, the Army, and the Army Air Forces, with a joint Army-Navy secretariat. The pertinent paragraph of the joint Army-Navy directive forming the Committee is quoted:

"By agreement between Chief of Staff and Commander-in-Chief, a Committee comprised of 4 Navy and 3 Army members is appointed to meet from time to time at the call of the senior member to study and evaluate reports of loss or damage of enemy Naval and Merchant vessels from all causes, except those cases considered by the Anti-Submarine Warfare Assessment Committee of the Office of the Commander-in-Chief, U.S. Fleet. Findings of the Anti-Submarine Warfare Assessment Committee will be included in the overall evaluation of enemy losses without further review. Periodic reports of the Committee will be submitted jointly to the Chief of Staff and Commander-in-Chief."

Sources used by the Committee for compiling information on Japanese vessel losses have included the following:

Prisoner of War Reports
Captured Enemy Documents
United States and Allied Intelligence Sources
Naval Shipping Control Authority for Japanese Merchant Marine (SCAJAP)
Ariyoshi's Final List (Japanese)
Ariyoshi's List (Japanese)
Shipowners' List (Japanese)
Naval Ministry List (Japanese)
United States Mine Warfare Report
United States and Allied Action Summaries
United States Photographic Intelligence
United States Strategic Bombing Survey Reports

The assessment of losses, unanimously agreed to by all members of the committee, are listed on the following pages. They include:

  1. All Naval vessels known or believed to have been lost.
  2. All merchant vessels of 500 or more gross tons known or believed to have been lost.

A negligible number of vessels have not been assessed because of insufficient information as to the cause of loss.

[signature - illegible]
Rear Admiral, USN,
Chairman
Joint Army-Navy Assessment Committee

3 February 1947

Graphs of Japanese Shipping Losses

Japanese Naval and Merchant Shipping Losses by the United Nations

Pie Chart: Japanese Naval and Merchant Shipping Losses by the United Nations.
Pie Chart: Japanese Naval and Merchant Shipping Losses by the United Nations. US Forces - 9.7 million tons; US and Allies - 0.1 million tons; Allies - 0.3 million tons; and Marine casualties Japanese mines - unknown - 0.5 million tons. Source: Joint Army-navy Assessment Committee.

--iv--

Bar Chart: Japanese Naval and Merchant Vessels Sunk by United States Forces
Bar Chart: Japanese Naval and Merchant Vessels Sunk by United States Forces divided by groups: submarines, carrier air, land-based air, mines, surface craft and miscellaneous. Source: Joint Army-navy Assessment Committee.

--v--

Summaries of Japanese Shipping Losses

TABLE I
TOTAL OF JAPANESE NAVAL AND MERCHANT VESSELS
SUNK
DURING WORLD WAR II
  Sinking Agent Naval Vessels Merchant Vessels Total Vessels
     No.  Tonnage  No.  Tonnage  No. Tonnage
* United States Forces 611 1,822,210 2,117 7,913,858 2,728 9,736,068
 
** Allied Forces: 45 69,636 73 211,664 118 281,300
      British 28 50,365 42 87,981 70 138,346
      Netherlands 7 8,099 15 57,471 22 65,570
      Australian 5 6,892 8 24,910 13 31,802
      Chinese - - 3 14,327 3 14,327
      Russian 2 1,660 2 8,233 4 9,893
      New Zealand 2 2,095 - - 2 2,095
      Netherlands and Australian - - 2 8,303 2 8,303
      Netherlands and Indian - - 1 10,439 1 10,439
      Australian and Indian 1 525 - - 1 525
 
*** United States and Allied Forces: 10 14,864 12 57,923 22 72,787
      United States and Australian 4 7,550 7 37,072 11 44,622
      United States, Australian, and Netherlands - - 2 16,362 2 16,362
      United States and British 5 5,102 2 3,500 7 8,602
      United States and New Zealand 1 2,212 - - 1 2,212
      United States, British and Netherlands - - 1 989 1 989
 
*** Marine Casualties 13 50,338 97 268,948 110 319,286
 
*** Japanese Mines - - 21 67,197 21 67,197
 
*** Unknown Forces 7 8,598 26 98,519 33 107,117
 
  TOTAL 686   1,965,646   2,346   8,618,109   3,032  10,583,755
 
* See TABLE II Page vii for detailed analysis.
** See TABLE III Page viii for detailed analysis.
*** See TABLE IV Page ix for detailed analysis.

--vi--

TABLE II

JAPANESE NAVAL AND MERCHANT VESSELS SUNK DURING WORLD WAR II
By
UNITED STATES FORCES

  Naval Vessels   Merchant Vessels   Total Vessels
Sinking Agent No. Tonnage   No. Tonnage   No. Tonnage
Submarines 201 540,192   1,113 4,779,902   1,314 5,320,094
Surface Craft 112 277,817   11 43,349   123 321,166
Army Aircraft 70 62,165   240 639,667   310 701,832
Navy-Marine Aircraft 172 724,638   447 1,608,959   619  2,333,597
      Carrier-Based 161 711,236   359 1,390,241   520 2,101,477
      Land-Based 11 13,402   88 218,718   99 232,120
Army, Navy, and Marine Aircraft in Combination: 9 48,750   23 114,306   32 163,056
      Army and Navy Carrier-Based Aircraft 1 5,700   1 6,143   2 11,843
      Army and Navy-Marine Land-Based Aircraft 6 21,250   14 49,978   20 71,228
      Navy Carrier-Based and Navy-Marine Land-Based Aircraft 2 21,800   - -   2 21,800
      Army, Navy Carrier-Based, and Navy-Marine Land-Based Aircraft - -   8 58,185   8 58,185
Navy Shore Batteries 2 2,770   - -   2 2,770
Mines: 19 17,995   247 591,660   266 609,655
      Laid by Army Air Forces 16 13,670   241 566,690   257 580,360
      Laid by Surface Craft 2 3,800   - -   2 3,800
      Laid by Navy Land-Based Aircraft 1 525   1 6,417   2 6,942
      Laid by Submarines - -   5 18,553   5 18,553
Aircraft and Other Agents: 26 147,883   32 132,710   58 280,593
      Army Aircraft, Navy-Marine Land-Based Aircraft and Surface Craft - -   3 20,607   3 20,607
      Army Aircraft and Surface Craft 2 7,900   1 8,572   3 16,472
      Army Aircraft, Navy Carrier-Based Aircraft, Navy-Marine Land-Based Aircraft, and Surface Craft 1 31,000   - -   1 31,000
      Army Aircraft and Army Mines - -   1 10,000   1 10,000
      Army Aircraft, Army Mine, and Navy Carrier-Based Aircraft 1 17,000   - -   1 17,000
      Army Aircraft and Submarines - -   2 10,062   2 10,062
      Army Aircraft and Sabotage - -   1 4,281   1 4,281
      Navy Carrier-Based Aircraft and Submarines 3 24,780   6 27,309   9 52,089
      Navy Carrier-Based Aircraft and Surface Craft 15 61,890   5 -   20 76,353
      Navy-Marine Land-Based Aircraft and Submarines - -   1 6,550   1 6,550
      Navy-Marine Land-Based Aircraft and Navy Mines 2 3,800   - -   2 3,800
      Navy-Marine Land-Based Aircraft and Surface Craft 2 1,513   - -   2 1,513
      Unknown Aircraft - -   12 30,866   12 30,866
      Unknown Agents     -               -          4        3,305          4        3,305
TOTAL 611 1,822,210   2,117 7,913,858   2,728 9,736,068

--vii--

TABLE III

JAPANESE NAVAL AND MERCHANT VESSELS SUNK DURING WORLD WAR II
By
ALLIED FORCES EXCLUDING UNITED STATES

Sinking Agent Naval Vessels   Merchant Vessels   Total Vessels
  No. Tonnage   No. Tonnage   No. Tonnage
 
British Forces: 28 50,365   42 87,981   70 138,346
    Submarines 14 26,396   29 65,040   43 91,436
    Navy Carrier-Based Aircraft - -   2 1,817   2 1,817
    Navy Land-Based Aircraft 2 1,600   1 1,350   3 2,950
    Surface Craft 8 19,287   - -   8 19,287
    Army Aircraft 1 270   - -   1 270
    Army Aircraft And Surface Craft - -   1 1,500   1 1,500
    Mines 3 2,812   7 11,000   10 13,812
    Sabotage - -   2 7,274   2 7,274
 
Netherlands Forces:   7   8,099   15   57,471   22   65,570
    Submarines 2 3,920   10 42,049   12 45,969
    Aircraft 1 615   5 15,422   6 16,037
    Mines 2 2,580   - -   2 2,580
    Shore Batteries 2 984   - -   2 984
 
Australian Forces:   5   6,892     8   24,910     13   31,802
    Aircraft 2 400   2 10,369   4 10,769
    Mines 3 6,492   6 14,541   9 21,033
 
New Zealand Forces:   2   2,095      -    -      2     2,095
    Surface Craft 1 1,995   - -   1 1,995
    Aircraft 1 100   - -   1 100
 
Chinese Aircraft   -       -     3   14,327      3     14,327
 
Russian Forces:   2    1,660     2    8,233     4     9,893
    Aircraft 2 1,660   1 6,003   3 7,663
    Unknown - -   1 2,230   1 2,230
 
Netherlands and Australian Aircraft   -     -     2     8,303      2    8,303
 
Netherlands And Indian Surface Craft   -     -     1    10,439      1    10,439
 
Australian and Indian Surface Craft   1      525     -          -      1        525
 
Total 45 69,636   73 211,664   118 281,300

--viii--

TABLE IV

JAPANESE NAVAL AND MERCHANT VESSELS SUNK DURING WORLD WAR II
By
COMBINATION OF UNITED STATES AND ALLIED FORCES. AND MISCELLANEOUS AGENTS

Sinking Agent Naval Vessels   Merchant Vessels   Total Vessels
  No. Tonnage   No. Tonnage   No. Tonnage
 
United States and Allied Forces: 10 14,864   12 57,923   22 72,787
    United States Army Aircraft and Australian Aircraft 4 7,550   6 30,579   10 38,129
    United States Navy-Marine Land-Based Aircraft and New Zealand Surface Craft 1 2,212   - -   1 2,212
    United States Navy Carrier-Based Aircraft and British Aircraft 2 1,760   2 3,500   4 5,260
    United States Army Aircraft and British Aircraft 1 1,500   - -   1 1,500
    United States and British Surface Craft 1 1,142   - -   1 1,142
    United States Surface Craft and British Aircraft 1 700   - -   1 700
    United States Army Aircraft and Surface Craft and Australian and Netherlands Aircraft - -   2 16,362   2 16,362
    United States Army Aircraft and Surface Craft and British Aircraft - -   1 6,493   1 6,493
    United States Army Aircraft and British and Netherlands Aircraft - -   1 989   1 989
 
Marine Casualties 13 50,338     97 268,948   110 319,286
 
Japanese Mines   -        -     21   67,197     21   67,197
 
Unidentified Forces:   7   8,598     26   98,519     33 107,117
    Aircraft 1 613-   1 1,398   2 2,011
    Submarines - -   1 940   1 940
    Unknown 6 7,985   24 96,181   30 104,166
 
TOTAL 30 73,800   156 492,589   186 566,387

--ix--

TABLE V

JAPANESE NAVAL AND MERCHANT VESSELS ASSESSED SUNK DURING WORLD WAR II
By
"PROBABLE" SINKING AGENTS

Notes: (1) These Figures Are Included In The Previous Tables
  (2) This Is An Additional Tabulation Showing Those
Sinkings Assessed By The Committee As Having
Been "Known Sunk" By A "Probable" Agent.

 

Sinking Agent Naval Vessels   Merchant Vessels   Total Vessels
  No. Tonnage   No. Tonnage   No. Tonnage
 
United States Forces: 13 37,434   65 273,589   78 311,023
    Submarines 4 5,064   51 220,808   55 225,872
    Army Aircraft - -   2 1,822   2 1,822
    Navy Carrier-Based Aircraft 4 400   - -   4 400
    Navy-Marine Land-Based Aircraft 1 170   3 8,575   4 8,745
    Surface Craft 4 31,800   - -   4 31,800
    Army Mine - -   5 30,222   5 30,222
    Navy Mine - -   3 10,947   3 10,947
    Unknown Aircraft - -   1 1,215   1 1,215
 
British Forces   -         -     3     5,846     3     5,846
    Submarines - -   2 2,817   2 2,817
    Mines - -   1 3,029   1 3,029
 
Netherlands Aircraft   -         -     1     4,109     1     4,109
 
Russian Aircraft   2   1,660     1     6,003     3     7,663
 
Unknown Aircraft   1       613     -         -     1       613
 
Australian Mines   1   4,000     -         -     1     4,000
 
Japanese Mines   -         -     8   31,092     8   31,092
 
Marine Casualties   -         -     1     3,209     1     3,209

--x--

JAPANESE NAVAL VESSELS SUNK DURING WORLD WAR II
(Chronological)

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
December 10 1941 I 170 Submarine 1,785 23-45N, 155-35W United States Navy Carrier-Based Aircraft Sunk
  10   MINESWEEPER NO 10 Minesweeper 630 17-32N, 120-22E United States Army Aircraft Sunk
  10   MINESWEEPER NO 19 Minesweeper 492 18-22N, 121-38E United States Army Aircraft Sunk
  11   HAYATE Destroyer 1,270 19-16N, 166-37E United States Navy Shore-Battery Sunk
  11   KISARAGI Destroyer 1,500 19-16N, 166-37E United States Navy Shore-Battery Sunk
  17   RO 66 Submarine 988 19-25N, 166-30E Japan Marine Casualty Sunk
  18   SHINONOME Destroyer 1,950 4-24N, 114-00E Netherlands Mine Sunk
  22   PATROL BOAT NO 32 Old Destroyer 750e 19-17N, 166-35E Japan Marine Casualty Sunk
  22   PATROL BOAT NO 33 Old Destroyer 750e 19-17N, 166-35E Japan Marine Casualty Sunk
  24   SAGIRI Destroyer 1,950 1-34N, 110-21E Netherlands Submarine Sunk
  26   MINESWEEPER NO 6 Minesweeper 615 1-34N, 110-21E Netherlands Army Aircraft Sunk
  29   RO 60 Submarine 988 9-00N, 167-40E Japan Marine Casualty Sunk
        12 Vessels 13,668        
January 12 1942 MINESWEEPER NO 13 Minesweeper 492 3-15N, 113-35E Netherlands Shore Battery Sunk
  12   MINESWEEPER NO 14 Minesweeper 492 3-15N, 113-35E Netherlands Shore Battery Sunk
  17   I 160 Submarine 1,635 6-00S, 105-00E Great Britain Surface Craft Sunk
  20   I 124 Submarine 1,142 12-05S, 130-06E United States
Great Britain
Surface Craft
Surface Craft
Sunk
  24   PATROL BOAT NO 37 Old Destroyer 750e 00-10N, 118-00E United States Surface Craft Sunk
  27   I 173 Submarine 1,785 28-24N, 178-35E United States Submarine Sunk
  29   I 23 Submarine 2,212 20-35N, 155-29W United States Surface Craft Sunk
        7 Vessels 8,508        
February 2 1942 MINESWEEPER NO 9 Minesweeper 630 3-42S, 128-10E Netherlands Mine Sunk
  8   NATSUSHIO Destroyer 1,900 5-10S, 119-24E United States Submarine Sunk
        2 Vessels 2,530        
April 3 1942 UNKNOWN Frigate 750e 00-36N, 119-19E United States Submarine Probably sunk
  26   RO 30 Submarine 965 18-11N, 166-54W United States Submarine Sunk
        2 Vessels 1,715        

--1--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
May         2 1942 MIZUHO Seaplane Tender 9,000 34-26N, 138-14E United States Submarine Sunk
  4   KIKUTSUKI Destroyer 1,500 9-07S, 160-12E United States Navy Carrier-
Based Aircraft
Sunk
  7   SHOHO Light Aircraft Carrier 12,000 10-29S, 152-55E United States Navy Carrier-
Based Aircraft
Sunk
  11   OKINOSHIMA Minelayer 4,400 5-06S, 153-48E United States Submarine Sunk
  17   I 28 Submarine 2,212 6-30N, 152-00E United States Submarine Sunk
  17   I 164 Submarine 1,625 29-25N, 134-09E United States Submarine Sunk
  25   ASAHI Repair Ship 11,441 10-00N, 110-00E United States Submarine Sunk
        7 Vessels 42,178        
June 1 1942 RO 35 Submarine 965 Pacific Area Japan Marine Casualty Sunk
  4   AKAGI Aircraft Carrier 36,000 30-00N, 179-00W United States Navy Carrier-
Based Aircraft
Sunk
  4   KAGA Aircraft Carrier 35,000 30-00N, 179-00W United States Navy Carrier-
Based Aircraft
Sunk
  4   HIRYU Light Aircraft Carrier 17,500 31-15N, 179-05E United States Navy Carrier-
Based Aircraft
Sank
  4   SORYU Light Aircraft Carrier 17,500 30-13N, 179-17W United States Navy Carrier-
Based Aircraft
Submarine
Sunk
  6   MIKUMA Heavy Cruiser 13,000 30-00N, 173-00E United States Navy Carrier-
Based Aircraft
Marine Land-
Based Aircraft
Sunk
  25   YAMAKAZE Destroyer 1,580 34-34N, 140-26E United States Submarine Sunk
        7 Vessels 121,545        

--2--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
July 4 1942 NENOHI Destroyer 1,600 52-15N, 173-51E United States Submarine Sunk
  5   ARARE Destroyer 1,850 52-00N, 177-40E United States Submarine Sunk
  9   RO 32 Submarine 700 55-20N, 134-40W United States Great Britain Surface Craft Aircraft Sunk
  15   SUBMARINE CHASER NO 25 Submarine Chaser 300 52-02N, 177-42E United States Submarine Sunk
  15   SUBMARINE CHASER NO 27 Submarine Chaser 300 52-02N, 177-42E United States Submarine Sunk
        5 Vessels 4,750        
August 10 1942 KAKO Heavy Cruiser 8,800 2-15S, 152-15E United States Submarine Sunk
  24   RYUJO Light Aircraft Carrier 8,500e 6-20S, 160-50E United States Navy Carrier-
Based Aircraft
Sunk
  25   MUTSUKI Destroyer 1,500 7-47S, 160-13E United States Army Aircraft Sunk
  28   I 123 Submarine 1,142 9-21S, 160-43E United States Surface Craft Sunk
  28   ASAGIRI Destroyer 1,950 8-00S, 160-10E United States Marine Land-
Based Aircraft
Probably sunk
  29   RO 33 Submarine 700 9-36S, 147-06E Great Britain Surface Craft Sunk
  31   RO 61 Submarine 988 52-36N, 173-57N United States Navy Land-
Based Aircraft
Surface Craft
Sunk
        7 Vessels 23,580        
September - 1942 RO 65 Submarine 988 North Pacific Unknown Unknown Sunk
  11   YAYOI Destroyer 1,500 8-45S, 151-25E United States
Great Britain
Army Aircraft
Aircraft
Sunk
        2 Vessels 2,488        
October - 1942 I 30 Submarine 2,212 l-00N, 105-00E Great Britain Mine Sunk
  11   FURUTAKA Heavy Cruiser 8,800 9-00S, 159-50E United States Surface Craft Sunk
  11   FUBUKI Destroyer 1,950 9-10S, 159-40E United States Surface Craft Sunk
  11   NATSUGUMO Destroyer 1,850 9-10S, 159-40E United States Surface Craft Sunk
  12   MURAKUMO Destroyer 1,950 8-40S, 158-20E United States Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Sunk
  16   OBORO Destroyer 1,950 52-17N, 178-08E United States Army Aircraft Sunk
  25   YURA Light Cruiser 5,700 8-40S, 160-00E United States Army Aircraft
Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Sunk
        7 Vessels 24,412        
November 10 1942 I 172 Submarine 1,785 10-13S, 161-09E United States Surface Craft Sunk
  13   AKATSUKI Destroyer 1,950 9-10S, 159-45E United States Surface Craft Sunk

--3--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November 13 1942 YUDACHI Destroyer 1,580 9-10S, 149-45E United States Surface Craft Sunk
  13   HIYEI Battleship 31,000 9-00S, 159-00E United States Army Aircraft
Navy Carrier-
Based Aircraft
Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Surface Craft
Sunk
  14   KINUGASA Heavy Cruiser 8,800 8-45S, 157-10E United States Navy Carrier-
Based Aircraft
Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Sunk
  15   KIRISHIMA Battleship 31,000 9-10S, 159-55E United States Surface Craft Sunk
  15   AYANAMI Destroyer 1,950 9-00S, 159-45E United States Surface Craft Sunk
  24   HAYASHIO Destroyer 1,900 7-00S, 140-30E United States Army Aircraft Sunk
  30   TAKANAMI Destroyer 1,900 9-10S, 159-45E United States Surface Craft Sunk
        9 Vessels 81,865        
December 10 1942 I 3 Submarine 1,995 9-14S, 159-40E United States Surface Craft Sunk
  12   TERUTSUKI Destroyer 2,450 7-50S, 157-30E United States Surface Craft Sunk
  16   I 15 Submarine 2,212 9-10S, 159-30E United States Navy Land-
Based Aircraft
Sunk
  18   TENRYU Light Cruiser 3,300 5-11S, 145-57E United States Submarine Sunk
  20   I 4 Submarine 1,995 5-02S, 152-33E United States Submarine Sunk
  22   PATROL BOAT NO 35 Old Destroyer 750e 5-05S, 156-04E United States Submarine Sunk
  25   I 22 Submarine 2,180 8-32S, 148-17E United States Surface Craft Sunk
        7 Vessels 14,882        
January 2 1943 I 18 Submarine 2,180 8-49S, 157-09E United States Submarine Sunk
  10   OKIKAZE Destroyer 1,300 35-02N, 140-12E United States Submarine Sunk
  12   PATROL BOAT NO 1 Old Destroyer 750e 2-51S, 149-43E United States Submarine Sunk
  23   HAKAZE Destroyer 1,300 2-47S, 150-38E United States Submarine Sunk
  29   I 1 Submarine 1.995 9-13S, 159-37E New Zealand Surface Craft Sunk
        5 Vessels 7,525        

--4--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
February 1 1943 MAKIGUMO Destroyer 1,900 9-10S, 159-45E United States Navy line Sunk
  11   RO 102 Submarine 525 14-15S, 161-59E United States Navy Carrier-
Based Aircraft
Surface Craft
Sunk
  20   OSHIO Destroyer 1,850 00-50S, 146-06E United States Submarine Sunk
  20   UNKNOWN Frigate 750e 00-50S, 146-06E United States Submarine Sunk
        4 Vessels 5,025        
March 3 1943 ARASHIO Destroyer 1,850 7-15S, 148-30E United States
Australia
Army Aircraft
Aircraft
Sunk
  3   ASASHIO Destroyer 1,850 7-10S, 148-15E United States
Australia
Army Aircraft
Aircraft
Sunk
  3   TOKITSUKAZE Destroyer 1,900 7-15S, 148-30E United States
Australia
Army Aircraft
Aircraft
Sunk
  3   SHIRAYUKI Destroyer 1,950 7-15S, 148-30E United States
Australia
Army Aircraft
Aircraft
Sunk
  6   MINEGUMO Destroyer 1,850 8-05S, 157-15E United States Surface Craft Sunk
  6   MURASAME Destroyer 1,580 8-05S, 157-15E United States Surface Craft Sunk
        6 Vessels 10,980        
April 3 1943 SUBMARINE CHASER NO 13 Submarine Chaser 440 40-00N, 142-00E United States Submarine Sunk
  4   RO 34 Submarine 700 8-15S, 158-55E United States Surface Craft Sunk
  9   ISONAMI Destroyer 1,950 5-26S, 123-04E United States Submarine Sunk
  23   PATROL BOAT NO 39 Old Destroyer 820e 23-45N, 122-45E United States Submarine Sunk
        4 Vessels 3,910        

--5--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
May       8 1943 KUROSHIO Destroyer 1,900 8-05S, 156-55E United States Navy Mine Sunk
  8   OYASHIO Destroyer 1,900 8-05S, 156-55E United States Navy Land-
Based Aircraft
Navy Mine
Sunk
  8   KAGERO Destroyer 1,900 8-05S, 156-55E United States Navy Land-Based Aircraft
Navy Mine
Sunk
  28   RO 107 Submarine 525 15-35S, 167-17E United States Surface Craft Sunk
        4 Vessels 6,225        
June 8 1943 MUTSU Battleship 37,500 34-05N, 132-20E Japan Marine Casualty Sunk
  10   I 9 Submarine 2,443 53-16N, 174-24E United States Surface Craft Sunk
  13   I 31 Submarine 2,212 52-08N, 177-38E United States Surface Craft Sunk
  22   I 7 Submarine 1,995 51-49N, 177-20E United States Surface Craft Sunk
        4 Vessels 44,150        
July 1 1943 RO 101 Submarine 525 8-39S, 157-35E United States Surface Craft Sunk
  6   NAGATSUKI Destroyer 1,500 7-57S, 157-12E United States Surface Craft Sunk
  6   NIIZUKI Destroyer 2,450 7-57S, 157-12E United States Surface Craft Sunk
  11   I 25 Submarine 2,212 8-00S, 157-19E United States Surface Craft Sunk
  13   JINTSU Light Cruiser 5,900 7-36S, 157-06E United States Surface Craft Sunk
  17   HATSUYUKI Destroyer 1,950 6-50S, 155-47E United States Army Aircraft
Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Sunk
  20   KIYONAMI Destroyer 2,100 7-13S, 156-45E United States Army Aircraft
Navy Land-
|Based Aircraft
Marine Land-
Based Aircraft
Sunk
  20   YUGURE Destroyer 1,600 7-25S, 156-45E United States Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Sunk

--6--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
July 22 1943  NISSHIN Seaplane Tender 9,000 6-35S, 156-10E United States Army Aircraft
Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Sunk
  27   HIRASHIMA Special Minelayer 720 32-32N, 127-41E United States Submarine Sunk
  27   I 24 Submarine 2,180 2-50S, 149-01E United States Submarine Sunk
  28   ARIAKE Destroyer 1,600 5-27S, 148-25E United States Army Aircraft Sunk
  28   MIKATSUKI Destroyer 1,500 5-27S, 148-25E United States Army Aircraft Sunk
      13 Vessels 33,237        
August 2 1943 MOTOR TORPEDO BOAT NO 112 Torpedo Boat 500e 6-40S, 146-50E United States Army Aircraft Sunk
  2   MOTOR TORPEDO BOAT NO 113 Torpedo Boat 500e 6-40S, 146-50E United States Army Aircraft Sunk
  6   ARASHI Destroyer 1,900 7-50S, 156-47E United States Surface Craft Sunk
  6   HAGIKAZE Destroyer 1,900 7-50S, 156-47E United States Surface Craft Sunk
  6   KAWAKAZE Destroyer 1,580 7-50S, 156-47E United States Surface Craft Sunk
  18   SPECIAL SUBMARINE CHASER NO 5 Special Submarine Chaser 100e 7-26S, 156-45E United States Surface Craft Sunk
  18   SPECIAL SUBMARINE CHASER NO 12 Special Submarine Chaser 100e 7-26S, 156-45E United States Surface Craft Sunk
  19   I 17 Submarine 2,212 23-26S, 166-50E United States

New Zealand
Navy Land-
Based Aircraft Surface Craft
Sunk
  19   SPECIAL SUBMARINE CHASER NO 109 Special Submarine Chaser 200 3-01S, 125-50E United States Submarine Sunk
  25   I 178 Submarine 1,630 12-57S, 164-23E United States Surface Craft Sunk
      10 Vessels 10,622        
September 2 1943 MUTSURE Frigate 860 8-40N, 151-31E United States Submarine Sunk
  3   I 168 Submarine 1,785 13-10S, 165-28E United States Surface Craft Sunk
  9   I 182 Submarine 1,630 10-33N, 125-31E United States Submarine Sunk
  11   MINESWEEPER NO 16 Minesweeper 492 6-08S, 119-20E Australia Mine Sunk
  15   RO 103 Submarine 525 10-57S, 163-56E United States Navy Land-
Based Aircraft
Surface Craft
Sunk
  26   KASASAGI Torpedo Boat 595 5-50S, 121-57E United States Submarine Sunk
  30   PETEREL River Gunboat 310 21-12N, 110-24E United States Army Aircraft Sunk
      7 Vessels 6,197        
October 1 1943 I 20 Submarine 2,180 7-40S, 157-10E United States Surface Craft Sunk
  6   YUGUMO Destroyer 1,900 7-32S, 156-20E United States Surface Craft Sunk
  12   BOKO Special Minelayer 400e 4-35S, 152-11E United States Army Aircraft Sunk
  16   SPECIAL SUBMARINE CHASER NO 31 Special Submarine Chaser 100 4-00S, 152-00E United States Army Aircraft Sunk
  24   MOCHITSUKI Destroyer 1,500 5-42S, 151-40E United States Navy Land-
Based Aircraft
Sunk
      5 Vessels 6,080        

--7--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November 2 1943 SENDAI Light Cruiser 5,900 6-20S, 154-20E United States Surface Craft Sunk
  2   HATSUKAZE Destroyer 1,900 6-20S, 154-20E United States Surface Craft Sunk
  2   MINESWEEPER NO 26 Minesweeper 500e 4-13S, 152-11E United States Army Aircraft Sunk
  4   TSUKUSHI Surveying Ship 2,000e 2-40S, 150-40E Australia Mine Sunk
  4   SPECIAL SUBMARINE CHASER NO 30 Special Submarine Chaser 100 7-34N, 134-0E United States Submarine Sunk
  6   SUBMARINE CHASER NO 11 Submarine Chaser 270 5-26S, 154-33E United States Army Aircraft Sunk
  11   SUZUNAMI Destroyer 2,100 4-13S, 152-11E United States Navy Carrier-
Based Aircraft
Sunk
  12   I 34 Submarine 2,212 5-17N, 100-05E Great Britain Submarine Sunk
  16   UKISHIMA Special Minelayer 720 Off Japan Unknown Unknown Sunk
  18   SANAYE Old Destroyer 820 4-52N, 122-07E United States Submarine Sunk
  23   I 35 Submarine 2,212 1-22N, 172-47E United States Surface Craft Sunk
  23   WAKAMIYA Frigate 860 28-49N, 122-11E United States Submarine Sunk
  25   I 19 Submarine 2,212 3-10N, 171-55E United States Surface Craft Sunk
  25   YUGIRI Destroyer 1,950 4-48S, 153-55E United States Surface Craft Sunk
  25   MAKINAMI Destroyer 1,900 5-06S, 153-44E United States Surface Craft Sunk
  25   ONAMI Destroyer 2,100 5-06S, 153-44E United States Surface Craft Sunk
        16 Vessels 27,756        
December - 1943 RO 38 Submarine 965 Pacific Ocean Unknown Unknown Sunk
  4   CHUYO Escort Aircraft Carrier 20,000 32-37N, 143-39E United States Submarine Sunk
  16   I 179 Submarine 1,630 4-28S, 147-22E United States Navy Land-
Based Aircraft
Sunk
  19   NUMAKAZE Destroyer 1,300 26-29N, 128-26E United States Submarine Sunk
  20   FUYO Old Destroyer 820 14-44N, 119-55E United States Submarine Sunk
  23   I 39 Submarine 2,212 9-23S, 160-09E United States Surface Craft Sunk
  23   NANYO Gunboat 1,200 25-30N, 119-30E United States Army Aircraft Sunk
  25   MINESWEEPER NO 31 Minesweeper 492 2-36S, 150-49E United States Navy Carrier-
Based Aircraft
Probably sunk
        8 Vessels 28,619        
January - 1944 I 181 Submarine 1,630 Off New Guinea Unknown Unknown Sunk
  11   KUMA Light Cruiser 5,700 6-00N, 99-00E Great Britain Submarine Sunk
  14   SAZANAMI Destroyer 1,950 5-15N, 141-15E United States Submarine Sunk
  15   PING SANG Yacht 171 21-00N, 107-22E United States Army Aircraft Sunk
  22   I 48 Submarine 2,180 9-45N, 138-20E United States Surface Craft Sunk
  22   RO 37 Submarine 965 11-47S, 164-17E United States Surface Craft Sunk
  22   SPECIAL SUBMARINE CHASER NO 40 Special Submarine Chaser 100 1-50S, 147-20E United States Army Aircraft Sunk
  26   SPECIAL SUBMARINE CHASER NO 14 Special Submarine Chaser 130 11-10N, 163-25E United States Navy Land-
Based Aircraft
Sunk
  26   SUZUKAZE Destroyer 1,580 8-51N, 157-10E United States Submarine Sunk

--8--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January 30 1944 SPECIAL SUBMARINE CHASER NO 28 Special Submarine Chaser 100 8-42N, 167-441 United States Navy Carrier-
Based Aircraft
Surface Craft.
Sunk
  30   SPECIAL SUBMARINE CHASER NO 25 Special Submarine Chaser 100 8-42N, 167-44E United States Navy Carrier-
Based Aircraft
Surface Craft
Sunk
  30   SPECIAL SUBMARINE CHASER NO 21 Special Submarine Chaser 100 8-42N, 167-44E United States Navy Carrier-
Based Aircraft
Surface Craft
Sunk
  30   SPECIAL SUBMARINE CHASER NO 19 Special Submarine Chaser 100 8-42N, 167-44E United States Navy Carrier-
Based Aircraft
Surface Craft
Sunk
  30   SPECIAL SUBMARINE CHASER NO 18 Special Submarine Chaser 100 8-42N, 167-44E United States Navy Carrier-
Based Aircraft
Surface Craft
Sunk
  31   I 171 Submarine 1,785 5-37S, 154-14E United States Surface Craft Sunk
  31   SPECIAL SUBMARINE CHASER NO 33 Special Submarine Chaser 100 8-42N, 167-44E United States Navy Carrier-
Based Aircraft
Surface Craft
Sunk
  31   NASAMI Special Minelayer 443 9-50N, 147-06E United States Submarine Sunk
        17 Vessels 17,234        
February - 1944 I 40 Submarine 2,212 Marshall Islands Unknown Unknown Sunk
  1   RO 39 Submarine 965 9-24N, 170-32E United States Surface Craft Sunk
  1   UMIKAZE Destroyer 1,580 7-10N, 151-43E United States Submarine Sunk
  4   I 21 Submarine 2,212 6-48N, 168-08E United States Surface Craft Sunk
  10   MINEKAZE Destroyer 1,300 23-12N, 121-30E United States Submarine Sunk
  11   RO 110 Submarine 525 17-25N, 83-21E Australia
India
Surface Craft
Surface Craft
Sunk
  12   I 27 Submarine 2,212 1-25N, 72-22E Great Britain Surface Craft Sunk
  15   I 43 Submarine 2,212 12-42N, 49-17E United States Submarine Sunk
  16   RO 40 Submarine 965 9-50N, 166-35E United States Surface Craft Sunk
  16   SPECIAL SUBMARINE CHASER NO. 16 Special Submarine Chaser 100e 2-24S, 150-06E United States Army Aircraft Sunk
  16   AGANO Light Cruiser 7,000 10-11N, 151-42E United States Submarine Sunk
  17   I 11 Submarine 2,443 10-34N, 173-31E United States Surface Craft Sunk
  17   SUBMARINE CHASER NO 24 Submarine Chaser 300 7-24N, 150-30E United States Surface Craft Sunk
  17   NAKA Light Cruiser 5,900 7-15N, 151-15E United States Navy Carrier-
Based Aircraft
Sunk
  17   FUMITSUKI Destroyer 1,500 7-24N, 151-44E United States Navy Carrier-
Based Aircraft
Sunk
  17   TACHIKAZE Destroyer 1,300 7-04N, 151-55E United States Navy Carrier-Based Aircraft Sunk

--9--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
February 17 1944 MAIKAZE Destroyer 1,900 7-45N, 151-20E United States Navy Carrier-
Based Aircraft
Surface Craft
Sunk
  17   OITE Destroyer 1,270 7-40N, 151-45E United States Navy Carrier-
Based Aircraft
Sunk
  17   SUBMARINE CHASER NO 29 Submarine Chaser 270 7-25N, 151-45E United States Navy Carrier-
Based Aircraft
Sunk
  17   SPECIAL SUBMARINE CHASER NO 29 Special Submarine Chaser 100e 2-24S, 150-06E United States Army Aircraft Sunk
  17   SUBMARINE CHASER NO 39 Submarine Chaser 300 2-24S, 150-06E United States Army Aircraft Sunk
  17   KATORI Training Cruiser 6,000 7-45N, 151-20E United States Navy Carrier-
Based Aircraft
Surface Craft
Sunk
  19   SPECIAL SUBMARINE CHASER NO 34 Special Submarine Chaser 100e 2-45S, 150-47E United States Army Aircraft Sunk
  19   SUBMARINE CHASER NO 22 Submarine Chaser 300 3-04S, 150-42E United States Army Aircraft Sunk
  19   SUBMARINE CHASER NO 40 Submarine Chaser 300 3-04S, 150-42E United States Army Aircraft Sank
  21   SPECIAL SUBMARINE CHASER NO 48 Special Submarine Chaser 100 2-30S, 150-15E United States Army Aircraft Sunk
  22   NATSUSHIMA Special Minelayer 443 2-40S, 149-40E United States Surface Craft Sunk
  22   NAGAURA Tug 800e 00-54S, 148-38E United States Surface Craft Sank
  22   FRANCIS GARNIER River Gunboat 639 10-30N, 108-00E United States Army Mine Sunk
  26   ASTROLABE Surveying Ship 215 16-04N, 108-13E United States Army Aircraft Sank
        30 Vessels 45,463        
March 3 1944 KARATSU River Gunboat 560 8-52N, 123-23E United States Submarine Sunk
  4   SHIRAKAMI Special Minelayer 720 39-30N, 142-00E Japan Marine Casualty Sunk
  13   TATSUTA Light Cruiser 3,300 32-58N, 138-52E United States Submarine Sunk
  16   SHIRAKUMO Destroyer 1,950 42-25N, 144-55E United States Submarine Sunk
  19   SPECIAL SUBMARINE CHASER NO 47 Special Submarine Chaser 100 2-55S, 143-40E United States Army Aircraft Sunk
  19   SPECIAL SUBMARINE CHASER NO 49 Special Submarine Chaser 100 2-55S, 143-40E United States Army Aircraft Sank
  23   I 42 Submarine 2,212 6-40N, 134-03E United States Submarine Sunk
  24   I 32 Submarine 2,212 8-30N, 170-10E United States Surface Craft Sank
  25   SUBMARINE CHASER NO 54 Submarine Chaser 300 28-34N, 142-14E United States Submarine Sunk
  30   WAKATAKE Old Destroyer 820 7-50N, 134-20E United States Navy Carrier-
Based Aircraft
Sank
  30   PATROL BOAT NO 31 Old Destroyer 750e 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   SPECIAL SUBMARINE CHASER NO 22 Special Submarine Chaser 100 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sank

--10--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
March         30 1944 SPECIAL SUBMARINE CHASER NO 26 Special Submarine Chaser 100 7-30N, 134-30E United States Navy Carrier-Based Aircraft Sunk
  30   SPECIAL SUBMARINE CHASER NO 53 Special Submarine Chaser 170 7-30N, 134-30E United States Navy Carrier-Based Aircraft Sunk
  30   SUBMARINE CHASER NO 6 Submarine Chaser 270 7-30N, 134-30E United States Navy Carrier-Based Aircraft Sunk
  30   AKASHI Repair Ship 9,000 7-30N, 134-30E United States Navy Carrier-Based Aircraft Sunk
        16 Vessels 22,664        
April 4 1944 I 169 Submarine 1,785 7-25N, 151-50E Japan Marine Casualty Sunk
  5   SPECIAL SUBMARINE CHASER NO 46 Special Submarine Chaser 130 7-26N, 151-52E United States Navy Carrier-Based Aircraft Sunk
  6   I 2 Submarine 1,995 2-17S, 149-14E United States Surface Craft Sunk
  11   AKIGUMO Destroyer 1,900 6-43N, 122-23E United States Submarine Sunk
  13   IKAZUCHI Destroyer 1,950 10-13N, 143-51E United States Submarine Sunk
  15   MINESWEEPER NO 7 Minesweeper 630 11-34N, 93-08E Great Britain Submarine Sunk
  20   RO 45 Submarine 965 15-19N, 145-31E United States Submarine Sunk
  22   HOKUAN Salvage Vessel 534 7-10N, 99-20E Great Britain Submarine Sunk
  23   AMAGIRI Destroyer 1,950 2-10S, 116-45E United States Army Mine Sunk
  26   I 180 Submarine 1,630 55-10N, 155-40W United States Surface Craft Sank
  27   KAMONE Special Minelayer 450 27-37N, 128-11E United States Submarine Sunk
  27   YUBARI Light Cruiser 3,500 5-20N, 132-16E United States Submarine Sunk
  28   I 183 Submarine 1,630 32-07N, 133-03E United States Submarine Sunk
  29   I 174 Submarine 1,785 6-13N, 151-19E United States Navy Carrier-Based Aircraft Surface Craft Sunk
  29   TAHURE River Gunboat 644 13-02N, 109-28E United States Submarine Sunk
  30   SPECIAL SUBMARINE CHASER NO 38 Special Submarine Chaser 100 7-22N, 151-45E United States Navy Carrier- Based Aircraft Sank
        16 Vessels 21,578        
May 10 1944 KARUKAYA Old Destroyer 820 15-38N, 119-25E United States Submarine Sunk
  13   RO 501 Submarine 1,200 18-08N, 33-13W United State Surface Craft Sank
  14   INAZUMA Destroyer 1,950 5-08N, 119-38E United States Submarine Sunk
  16   I 176 Submarine 1,630 4-01S,156-29E United States Surface Craft Sunk
  19   I 16 Submarine 2,180 5-10S, 158-17E United States Surface Craft Sank
  21   RO 106 Submarine 525 1-40N, 150-31E United States Surface Craft Sunk
  22   RO 104 Submarine 525 1-26N, 149-20E United States Surface Craft Sunk
  22   HASHIDATE Gunboat 1,200 21-20N, 117-10E United States Submarine Sunk
  22   ASANAGI Destroyer 1,270 28-20N, 138-57E United States Submarine Sunk
  23   RO 116 Submarine 525 00-53N, 149-14E United States Surface Craft Sunk
  24   IKI Frigate 860 1-17N, 107-50E United States Submarine Sunk
  26   RO 108 Submarine 525 00-32S, 148-35E United States Surface Craft Sunk

--11--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
May 29 1944 RO 105 Submarine 525 00-47N, 149-56E United States Surface Craft Sunk
  30   ISHIGAKI Frigate 860 48-30N, 151-30E United States Submarine Sunk
        14 Vessels 14,595        
June           2 1944 AWAJI Frigate 900e 22-34N, 121-51E United States Submarine Sunk
  4   TRANSPORT NO 128 Tank Landing Ship 1,000e 4-00N, 129-45E United States Army Aircraft Sunk
  6   COAST DEFENSE VESSEL NO 15 Frigate 800e 8-58N, 109-30E United States Submarine Sunk
  6   MINATSUKI Destroyer 1,500 4-05N, 119-30E United States Submarine Sunk*
  7   HAYANAMI Destroyer 2,100 4-43N, 120-03E United States Submarine Sunk
  8   HARUSAME Destroyer 1,580 00-05N, 132-45E United States Army Aircraft Sunk
  8   KAZEGUMO Destroyer 1,900 6-03N, 125-57E United States Submarine Sunk
  9   MATSUKAZE Destroyer 1,270 26-59N, 143-13E United States Submarine Sunk
  9   TANIKAZE Destroyer 1,900 5-42N, 120-41E United States Submarine Sunk
  10   I 5 Submarine 1,995 00-26N, 149-16E United States Surface Craft Sank
  10   RO 111 Submarine 525 10-05N, 168-22E United States Surface Craft Sank
  12   I 33 Submarine 2,212 33-30N, 132-30E Japan Marine Casualty Sank
  12   OTORI Torpedo Boat 595 17-32N, 144-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   SPECIAL SUBMARINE CHASER NO 35 Special Submarine Chaser 100 17-30N, 143-18E United States Navy Carrier-
Based Aircraft*
Sank
  12   SPECIAL SUBMARINE CHASER NO 54 Special Submarine Chaser 100 17-30N, 143-18E United States Navy Carrier-
Based Aircraft*
Sunk
  12   SPECIAL SUBMARINE CHASER NO 56 Special Submarine Chaser 100 17-30N, 143-18E United States Navy Carrier-
Based Aircraft*
Sank
  13   RO 36 Submarine 965 15-21N, 147-00E United States Surface Craft Sunk
  13   TRANSPORT NO 1 High Speed Transport 1,500 11-30N, 140-00E United States Navy Carrier-
Based Aircraft
Sunk
  15   SHIRATSUYU Destroyer 1,580 9-09N, 126-51E Japan Marine Casualty Sunk
  15   RO 44 Submarine 965 11-13N, 164-15E United States Surface Craft Sunk
  15   SPECIAL MINELAYER NO 101 Special Minelayer 730 15-15N, 145-45E United States Surface Craft Sunk
  16   RO 114 Submarine 525 15-02N, 144-10E United States Surface Craft Sunk
  17   RO 117 Submarine 525 11-05N, 150-31E United States Navy Land-
Based Aircraft
Sunk
  19   I 184 Submarine 1,630 13-01N, 149-53E United States Navy Carrier-
Based Aircraft
Sunk
  19   SHOKAKU Aircraft Carrier 30,000 11-50N, 137-57E United States Submarine Sunk
  19   TAIHO Aircraft Carrier 31,000 12-22N, 137-04E United States Submarine Sunk
  20   HITAKA Aircraft Carrier 28,000 15-30N, 133-30E United States Navy Carrier-
Based Aircraft
Sank
  22   I 185 Submarine 1,630 15-50N, 147-08E United States Surface Craft Sunk
*Probable Agent

--12--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
June      24 1944 I 52 Submarine 2,095 15-16N, 39-55W United States Navy Carrier-
Based Aircraft
Sunk
  28   COAST DEFENSE VESSEL NO 24 Frigate 800e 24-44N, 140-20E United States Submarine Sunk
  29   TSUGARU Minelayer 4,400e 2-19N, 127-57E United States Submarine Sunk
        31 Vessels 124,922        
July 4 1944 I 10 Submarine 2,443 15-26N, 147-48E United States Surface Craft Sank
  4   SUBMARINE CHASER NO 16 Submarine Chaser 300 27-00N, 140-50E United States Navy Carrier-Based Aircraft Sank
  4   SARUSHIMA Special Minelayer 443 27-10N, 142-10E United States Navy Carrier-Based Aircraft Sank
  4   TRANSPORT NO 103 Tank Landing Ship 1,000e 27-05N, 142-09E United States Navy Carrier-Based Aircraft Sank
  4   TRANSPORT NO 130 Tank Landing Ship 1,000e 24-47N, 141-20E United States Navy Carrier-Based Aircraft Sank
  6   HOKAZE Destroyer 1,300 3-24N, 125-28E United States Submarine Sunk
  7   USUGUMO Destroyer 1,950 47-43N, 147-55E United States Submarine Sunk
  7   TAMANAMI Destroyer 2,100 13-55N, 118-30E United States Submarine Sunk
  10   SPECIAL SUBMARINE CHASER NO 23 Special Submarine Chaser 100 4-13S, 152-11E New Zealand Aircraft Sank
  13   I 6 Submarine 1,995 15-18N, 144-26E United States Surface Craft Sank
  17   I 166 Submarine 1,635 5-10N, 100-00E Great Britain Submarine Sunk
  17   MINESWEEPER NO 25 Minesweeper 492 33-51N, 138-35E United States Submarine Sunk
  18   RO 48 Submarine 965 13-01N, 151-58E United States Surface Craft Sank
  18   SUBMARINE CHASER NO 50 Submarine Chaser 300e 29-22N, 139-14E United States Submarine Sunk
  19   SPECIAL MINESWEEPER NO 4 Special Minesweeper 300 8-38S, 125-26E Australia Aircraft Sank
  19   OI Light Cruiser 5,700 12-45N, 114-20E United States Submarine Sunk
  25   UNKNOWN SCS Special Submarine Chaser 100e 7-05N, 134-20E United States Navy Carrier-Based Aircraft Sank
  25   SAMIDARE Destroyer 1,580 8-10N, 134-38E United States Navy Carrier-Based Aircraft Submarine Sank
  26   SOKUTEN Special Minelayer 720 7-20N, 134-27E United States Navy Carrier-Based Aircraft Sank
  26   TRANSPORT NO 150 Tank Landing Ship 1,000e 7-30N, 134-30E United States Navy Carrier-Based Aircraft Sank
  26   I 29 Submarine 2,212 20-10N, 121-50E United States Submarine Sunk
  28   I 55 Submarine 2,095 14-26N, 152-16E United States Surface Craft Sank
        22 Vessels 29,730        

--13--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
August 4 1944 MATSU Destroyer 900 27-40N, 141-48E United States Surface Craft Sunk
  4   TRANSPORT NO 4 High Speed Transport 1,500e 27-07N, 142-12E United States Navy Carrier-
Based Aircraft
Sunk
  4   TRANSPORT NO 133 Tank Landing Ship 1,000e 24-47N, 141-20E United States Navy Carrier-
Based Aircraft
Sunk
  4   TRANSPORT NO 152 Tank Landing Ship 1,000e 24-47N, 141-20E United States Navy Carrier-
Based Aircraft
Sunk
  5   TRANSPORT NO 2 High Speed Transport 1,500e 27-05N, 142-09E United States Navy Carrier-
Based Aircraft
Sunk
  7   SPECIAL SUBMARINE CHASER NO 94 Special Submarine Chaser 100e 20-00N, 122-00S Japan Marine Casualty Sunk
  7   KUSAKAKI Frigate 900e 14-51N, 119-59E United States Submarine Sunk
  7   NAGARA Light Cruiser 5,700 32-09N, 129-53E United States Submarine Sunk
  13   SUBMARINE CHASER NO 12 Submarine Chaser 300 6-17N, 126-09E United States Submarine Sunk
  14   TRANSPORT NO 129 Tank Landing Ship 1,000e 4-17S, 126-46E United States Submarine Sunk
  18   OTAKA Escort Aircraft Carrier 20,000 13-16N, 120-20E United States Submarine Sunk
  18   NATORI Light Cruiser 5,700 12-29N, 128-49E United States Submarine Sunk
  22   SADO Frigate 860 14-15N, 120-05E United States Submarine Sunk
  22   MATSUWA Frigate 860 14-15N, 120-05E United States Submarine Sunk
  22   HIBURI Frigate 900e 14-15N, 120-05E United States Submarine Sunk
  23   ASAKAZE Destroyer 1,270 16-06N, 119-44E United States Submarine Probably sunk
  23   MINESWEEPER NO 22 Minesweeper 492 8-09N, 134-38E United States Submarine Sunk
  25   YUNAGI Destroyer 1,270 18-46N, 120-46E United States Submarine Sunk
  28   SPECIAL SUBMARINE CHASER NO 77 Special Submarine Chaser 170 50-30N, 156-20E United States Army Aircraft Sunk
  29   MINESWEEPER NO 28 Minesweeper 492 2-03N, 122-28E United States Submarine Sunk
  31   SHIRATAKA Minelayer 1,345 21-05N, 121-26E United States Submarine Sunk
        21 Vessels 47,259        
September 9 1944 SPECIAL SUBMARINE CHASER NO 8 Special Submarine Chaser 100 3-54N, 98-44E Great Britain Mine Sunk
  11   SPECIAL SUBMARINE CHASER NO 165 Special Submarine Chaser 170 32-20N, 131-50E United States Submarine Sunk
  12   SUBMARINE CHASER NO 55 Submarine Chaser 300e 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   MIHO Salvage Vessel 632 10-35N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   SHIKINAMI Destroyer 1,950 18-16N, 114-40E United States Submarine Sunk
  12   HIRADO Frigate 860 17-54N, 114-49E United States Submarine Sunk
  14   TRANSPORT NO 5 High Speed Transport 1,500e 6-10N, 126-00E United States Navy Carrier-
Based Aircraft
Sunk
  15   RO 42 Submarine 965 34-30N, 145-23E United States Submarine Sunk

--14--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
September 15 1944 TRANSPORT NO 3 High Speed Transport 1,500e 5-34N,125-23E United States Submarine Sunk
  16   UNYO Escort Aircraft Carrier 20,000 19-18N, 116-26E United States Submarine Sunk
  19   IOSHIMA Frigate 900e 33-40N, 138-18E United States Submarine Sunk
  21   SATSUKI Destroyer 1,500 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   COAST DEFENSE VESSEL NO 5 Frigate 800e 15-25N, 119-50E United States Navy Carrier-
Based Aircraft
Sunk
  21   SUNOSAKI Repair Ship 1,800e 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   KATSURIKI Surveying Ship 1,540 13-35N, 119-06E United States Submarine Sunk
  24   HAYABUSA Torpedo Boat 595 13-00N, 122-00E United States Navy Carrier-
Based Aircraft
Probably sunk
  24   SPECIAL SUBMARINE CHASER NO 39 Special Submarine Chaser 100e 12-21N, 123-00E United States Navy Carrier-
Based Aircraft
Sunk
  24   SUBMARINE CHASER NO 32 Submarine Chaser 300 12-15N, 121-00E United States Navy Carrier-
Based Aircraft
Sunk
  24   SPECIAL MINESWEEPER NO 7 Special Minesweeper 300e 11-45N, 123-30E United States Navy Carrier-
Based Aircraft
Sunk
  24   YAEYAMA Minelayer 1,135 12-15N, 121-00E United States Navy Carrier-
Based Aircraft
Sunk
  24   AKITSUSHIMA Seaplane Tender 9,000 11-59N, 120-02E United States Navy Carrier-
Based Aircraft
Sunk
  25   I 175 Submarine 1,785 9-19N, 136-44E United States Surface Craft Sunk
  26   AOTAKA Minelayer 1,600 7-00N, 116-00E United States Submarine Sunk
  27   COAST DEFENSE VESSEL NO 10 Frigate 800e 29-26N, 128-50E United States Submarine Sunk
        24 Vessels 50,132        
October 1 1944 AJIRO Special Minelayer 720e 28-11N, 139-30E United States Submarine Sunk
  2   I 364 Submarine 1,470 7-48N, 133-28E United States Surface Craft Sunk
  4   TRANSPORT NO 134 Tank Landing Ship 1,000e 24-47N, 141-20E Japan Marine Casualty Sunk
  6   SAGA Gunboat 990 22-17N, 114-10E United States Army Mine Sunk
  6   SPECIAL SUBMARINE CHASER NO 2 Special Submarine Chaser 100 4-20N, 98-24E Great Britain Submarine Sunk
  6   COAST DEFENSE VESSEL NO 21 Frigate 800e 19-27N, 118-08E United States Submarine Sunk
  10   TRANSPORT NO 158 Tank Landing Ship 1,000e 26-38N, 127-52E United States Navy Carrier-
Based Aircraft
Sunk
  10   JINGEI Submarine Tender 5,160 26-39N, 127-52E United States Navy Carrier-
Based Aircraft
Sunk
  11   TRANSPORT NO 105 Tank Landing Ship 1,000e 33-18N, 137-42E United States Submarine Sunk
  16   HATO Torpedo Boat 595 21-54N, 116-30E United States Army Aircraft Sunk
  17   ITSUKUSHIMA Minelayer 1,970 5-26S, 113-48E Netherlands Submarine Sunk

--15--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
October      18 1944 SPECIAL SUBMARINE CHASER NO 95 Special Submarine Chaser 100e 18-54N, 121-51E United States Navy Carrier-
Based Aircraft
Sunk
  18   TRANSPORT NO 135 Tank Landing Ship 1,000e 17-46N, 120-25E United States Navy Carrier-
Based Aircraft
Sunk
  18   TRANSPORT NO 136 Tank Landing Ship 1,000e 17-46N, 120-25E United States Navy Carrier-
Based Aircraft
Probably sunk
  22   SPECIAL SUBMARINE CHASER NO 15 Special Submarine Chaser 100 11-30N, 124-00E United States Navy Carrier-
Based Aircraft*
Sunk
  23   MAYA Heavy Cruiser 12,200 9-29N, 117-20E United States Submarine Sunk
  23   ATAGO Heavy Cruiser 12,200 9-24N, 117-11E United States Submarine Sunk*
  24   I 362 Submarine 1,470 9-45N, 126-45E United States Surface Craft Sunk
  24   MUSASHI Battleship 63,000 12-50N, 122-35E United States Navy Carrier-
Based Aircraft
Sunk
  24   WAKABA Destroyer 1,600 11-50N, 121-25E United States Navy Carrier-
Based Aircraft
Sunk
  25   FUSO Battleship 33,000 10-25N, 125-20E United States Surface Craft Sunk
  25   YAMASHIRO Battleship 33,000 10-25N, 125-20E United States Surface Craft Sunk
  25   ASAGUMO Destroyer 1,850 10-25N, 125-20E United States Surface Craft Sunk
  25   YAMAGUMO Destroyer 1,850 10-25N, 125-20E United States Surface Craft Sunk
  25   MICHISHIO Destroyer 1,850 10-25N, 125-20E United States Surface Craft Sunk
  25   HATSUTSUKI Destroyer 1,900 20-24N, 126-20E United States Surface Craft* Sunk
  25   ZUIKAKU Aircraft Carrier 30,000 19-20N, 125-51E United States Navy Carrier-
Based Aircraft
Sunk
  25   SUZUYA Heavy Cruiser 13,000 11-30N, 126-30E United States Navy Carrier-
Based Aircraft
Sunk
  25   CHIYODA Light Aircraft Carrier 11,000 18-37N, 126-45E United States Navy Carrier-
Based Aircraft
Sunk
  25   ZUIHO Light Aircraft Carrier 12,000 19-20N, 125-51E United States Navy Carrier-
Based Aircraft
Sunk
  25   SPECIAL SUBMARINE CHASER NO 62 Special Submarine Chaser 170 7-30N, 134-30E United States Marine Carrier-
Based Aircraft*
Sunk
  25   CHIKUMA Heavy Cruiser 12,000 11-30N, 126-30E United States Navy Carrier-
Based Aircraft Surface Craft*
Sunk
  25   CHOKAI Heavy Cruiser 12,200 11-30N, 126-30E United States Navy Carrier-
Based Aircraft Surface Craft*
Sunk
  25   MOGAMI Heavy Cruiser 13,000 9-40N, 124-50E United States Navy Carrier-
Based Aircraft Surface Craft
Sunk
  25   CHITOSE Light Aircraft Carrier 11,000 19-20N, 126-20E United States Navy Carrier-
Based Aircraft Surface Craft
Sunk
*Probable Agent

--16--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
October 25 1944 AKITSUKI Destroyer 1,900 20-29N, 126-36E United States Submarine* Sunk
  25   TAMA Light Cruiser 5,700 21-23N, 127-19E United States Navy Carrier-
Based Aircraft Submarine
Sunk
  26   NOWAKI Destroyer 1,900 13-00N, 124-54E United States Surface Craft Sunk
  26   KINU Light Cruiser 5,700 11-46N, 123-11E United States Army Aircraft Navy Carrier-
Based Aircraft
Sunk
  26   NOSHIRO Light Cruiser 7,000 11-35N, 121-45E United States Navy Carrier-
Based Aircraft
Sunk
  26   HAYASHIMO Destroyer 2,100 12-05N, 121-50E United States Navy Carrier-
Based Aircraft
Sunk
  26   URANAMI Destroyer 1,950 11-50N, 123-00E United States Navy Carrier-
Based Aircraft
Sunk
  26   ABUKUMA Light Cruiser 5,700 9-20N, 122-30E United States Army Aircraft Surface CraftNavy Carrier-
Based Aircraft*
Sunk
  27   FUJINAMI Destroyer 2,100 12-00N, 122-30E United States Navy Carrier-
Based Aircraft
Sunk
  27   SHIRANUHI Destroyer 1,650 12-00N, 122-30E United States Navy Carrier-
Based Aircraft
Sunk
  27   TRANSPORT NO 138 Tank Landing Ship 1,000e 25-22N, 141-31E United States Submarine Sunk
  28   I 45 Submarine 2,212 10-10N, 127-28E United States Surface Craft Sunk
  28   I 54 Submarine 2,140 10-56N, 127-13E United States Surface Craft Sunk
  31   KAIYO NO 6 District Craft 100e 32-50N, 134-21E United States Submarine* Sunk
        49 Vessels 336,447        
November   3 1944 AKIKAZE Destroyer 1,300 16-48N, 117-17E United States Submarine Sunk
  4   MINESWEEPER NO 5 Minesweeper 615 3-14N, 99-50E Great Britain Submarine Sunk
  5   TRANSPORT NO 112 High Speed Transport 1,000e 12-40N, 121-22E Japan Marine Casualty Sunk
  5   NACHI Heavy Cruiser 12,700 14-23N, 120-25E United States Navy Carrier-
Based Aircraft
Sunk
  5   PATROL BOAT NO 107 Yacht 1,000 13-50N, 120-20E United States Navy Carrier-
Based Aircraft
Sunk
  5   NOTORO Seaplane Tender 14,050 1-18N, 103-52E United States Army Aircraft Sunk
  6   TRANSPORT NO 139 Tank Landing Ship 1,000e 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Probably sunk
  6   SPECIAL SUBMARINE CHASER NO 118 Special Submarine Chaser 100e 9-38S, 120-17E Australia Aircraft Sunk
  8   SAGI Torpedo Boat 595 16-09N, 118-56E United States Submarine Sunk
  10   COAST DEFENSE VESSEL NO 11 Frigate 800e 10-50N, 124-35E United States Army Aircraft Sunk
*Probable Agent

--17--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November   10 1944 PATROL BOAT NO 46 Old Destroyer 820 34-30N, 138-34E United States Submarine Sunk
  11   NAGANAMI Destroyer 1,900 10-50N, 124-35E United States Navy Carrier- Based Aircraft Sunk
  11   HAMANAMI Destroyer 2,100 10-50N, 124-35E United States Navy Carrier- Based Aircraft Sunk
  11   SHIMAKAZE Destroyer 1,300 10-50N, 124-35E United States Navy Carrier- Based Aircraft Sunk
  11   WAKATSUKI Destroyer 1,900 10-50N, 124-35E United States Navy Carrier- Based Aircraft Sunk
  11   MINESWEEPER NO 30 Minesweeper 630e 10-50N, 124-31E United States Navy Carrier- Based Aircraft Sunk
  12   I 37 Submarine 2,212 8-04N, 138-03E United States Surface Craft Sunk
  13   I 38 Submarine 2,212 31-55N, 139-45W United States Surface Craft Sunk
  13   KISO Light Cruiser 5,700 14-35N, 120-50E United States Navy Carrier- Based Aircraft Sunk
  13   AKEBONO Destroyer 1,950 14-35N, 120-50E United States Navy Carrier- Based Aircraft Sunk
  13   AKISHIMO Destroyer 2,100 14-35N, 120-50E United States Navy Carrier- Based Aircraft Sunk
  13   HATSUHARU Destroyer 1,600 14-35N, 120-50E United States Navy Carrier- Based Aircraft Sunk
  13   OKINAMI Destroyer 2,100 14-35N, 120-50E United States Navy Carrier- Based Aircraft Sunk
  13   SPECIAL SUBMARINE CHASER NO 116 Special Submarine Chaser 100e 14-30N, 120-45E United States Navy Carrier- Based Aircraft Sunk
  14   KURASAKI Miscellaneous Auxiliary 989 17-27N, 117-43E United States Submarine Sunk
  14   COAST DEFENSE VESSEL NO 7 Frigate 800e 17-46N, 117-57E United States Submarine Sunk
  17   I 26 Submarine 2,212 12-44N, 130-42E United States Navy Carrier- Based Aircraft Sunk
  17   JINYO Escort Aircraft Carrier 21,000 33-02N, 123-33E United States Submarine Sunk
  17   HIYODORI Torpedo Boat 595 16-56N, 110-30E United States Submarine Sunk
  18   SPECIAL SUBMARINE CHASER NO 156 Special Submarine Chaser 100e 33-07N, 123-09E United States Submarine Probably sunk
  19   I 177 Submarine 1,630 8-07N, 134-16E United States Surface Craft Sunk
  20   SPECIAL MINELAYER NO 4 Special Minelayer 600e 6-55N, 94-15E Great Britain Submarine Sunk
  20   MINESWEEPER NO 38 Minesweeper 630e 21-21N, 119-45E United States Submarine Sunk
  21   KONGO Battleship 31,000 26-09N, 121-23E United States Submarine Sunk
  21   URAKAZE Destroyer 1,900 26-09N, 121-23E United States Submarine Sunk
  22   TRANSPORT NO 151 Tank Landing Ship 1,000e 11-22N, 119-07E United States Submarine Sunk
  24   SUBMARINE CHASER NO 46 Submarine Chaser 300 11-35N, 124-10E United States Army Aircraft Sunk
  24   TRANSPORT NO 111 Tank Landing Ship 1,000e 11-35N, 124-10E United States Army Aircraft Sunk
  24   TRANSPORT NO 141 Tank Landing Ship 1,000e 11-35N, 124-10E United States Army Aircraft Sunk
  24   TRANSPORT NO 160 Tank Landing Ship 1,000e 11-35N, 124-10E United States Army Aircraft Sunk

--18--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November   25 1944 KUMANO Heavy Cruiser 13,000 15-47N, 119-48E United States Navy Carrier-
Based Aircraft
Sunk
  25   YASOJIMA Frigate 900e 15-40N, 119-45E United States Navy Carrier-
Based Aircraft
Sunk
  25   TRANSPORT NO 6 High Speed Transport 1,500e 13-32N, 121-52E United States Navy Carrier-
Based Aircraft
Sunk
  25   TRANSPORT NO 10 High Speed Transport 1,500e 13-32N, 121-52E United States Navy Carrier-
Based Aircraft
Sunk
  25   UNKNOWN LST Tank Landing Ship 1,000e 15-40N, 119-45E United States Navy Carrier-
Based Aircraft
Sunk
  25   UNKNOWN LST Tank Landing Ship 1,000e 15-40N, 119-45E United States Navy Carrier-
Based Aircraft
Sunk
  25   UNKNOWN LST Tank Landing Ship 1,000e 15-40N, 119-45E United States Navy Carrier-
Based Aircraft
Sunk
  25   MINESWEEPER NO 18 Minesweeper 492 16-52N, 108-38E United States Army Aircraft Sunk
  25   RO 100 Submarine 525 7-00S, 156-00E United States Navy Mine Sunk
  25   COAST DEFENSE VESSEL NO 38 Frigate 800e 14-22N, 119-57E United States Submarine Sunk
  25   PATROL BOAT NO 38 Old Destroyer 820e 20-12N, 121-51E United States Submarine Sunk
  25   SHIMOTSUKI Destroyer 2,300 2-21N, 107-20E United States Submarine Sunk
  26   TRANSPORT NO 161 Tank Landing Ship 1,000e 16-00N, 97-00E United States Army Aircraft Sunk
  27   I 46 Submarine 2,180 10-48N, 124-35E United States Surface Craft Sunk
  28   SUBMARINE CHASER NO 53 Submarine Chaser 300e 10-59N, 124-33E United States Surface Craft Sunk
  28   PATROL BOAT NO 105 Yacht 200e 10-59N, 124-33E United States Surface Craft Sunk
  28   I 365 Submarine 1,470 34-44N, 141-01E United States Submarine Sunk
  29   SUBMARINE CHASER NO 45 Submarine Chaser 300 11-00N, 124-15E United States Army Aircraft Sunk
  29   SHINANO Aircraft Carrier 59,000 32-00N, 137-00E United States Submarine Sunk
        59 Vessels 214,827        
December 3 1944 KUWA Destroyer 1,000 10-50N, 124-35E United States Surface Craft Sunk
  3   COAST DEFENSE VESSEL NO 64 Frigate 800e 18-36N, 111-54E United States Submarine Sunk
  4   KISHINAMI Destroyer 2,100 13-12N, 116-37E United States Submarine Sunk
  4   IWANAMI Destroyer 2,100 13-12N, 116-37E United States Submarine Sunk
  5   HOZU Salvage Vessel 613 4-24S, 152-18E Unknown Aircraft* Sunk
  7   TRANSPORT NO 11 High Speed Transport 1,500e 11-23N, 124-18E United States Army Aircraft Sunk
  12   UZUKI Destroyer 1,500 11-03N, 124-23E United States Surface Craft Sunk
  12   YUZUKI Destroyer 1,500 11-20N, 124-10E United States Army Aircraft Marine Land-
Based Aircraft
Sunk
*Probable Agent

--19--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
December   12 1944 TRANSPORT NO 159 Tank Landing Ship 1,000e 11-20N, 124-10E United States Army Aircraft Marine Land-
Based Aircraft
Sunk
  13   TRANSPORT NO 12 High Speed Transport 1,900e 20-34N, 118-45E United States Submarine Sunk
  13   TRANSPORT NO 104 Tank Landing Ship 1,900e 20-34N, 118-45E United States Submarine Sunk
  14   TRANSPORT NO 109 Tank Landing Ship 1,000e 17-35N, 120-20E United States Navy Carrier-
Based Aircraft
Sunk
  14   COAST DEFENSE VESSEL NO 28 Frigate 800e 15-46N, 119-45E United States Submarine Sunk
  15   COAST DEFENSE VESSEL NO 54 Frigate 740e 19-25N, 121-25E United States Navy Carrier-
Based Aircraft
Sunk
  15   TRANSPORT NO 106 Tank Landing Ship 1,000e 15-30N, 119-50E United States Navy Carrier-
Based Aircraft
Sunk
  15   MOMO Destroyer 760 16-00N, 117-39E United States Submarine Sunk
  19   UNRYU Aircraft Carrier 18,500 28-59N, 124-03E United States Submarine Sunk
  22   CHIDORI Torpedo Boat 527 34-33N, 138-02E United States Submarine Sunk
  24   TRANSPORT NO 8 High Speed Transport 1,900e 25-10N, 141-00E United States Surface Craft Sunk
  24   TRANSPORT NO 157 Tank Landing Ship 1,000e 24-47N, 141-20E United States Surface Craft Sunk
  26   KIYOSHIMO Destroyer 2,200 12-20N, 121-00E United States Army Aircraft Surface Craft Sunk
  27   TRANSPORT NO 7 High Speed Transport 1,500e 24-47N, 141-20E United States Surface Craft Sunk
  27   TRANSPORT NO 132 Tank Landing Ship 1,000e 24-47N, 141-20E United States Surface Craft Sunk
  30   COAST DEFENSE VESSEL NO 20 Frigate 1,000e 16-30N, 120-15E United States Army Aircraft Sunk
  30   KURETAKE Old Destroyer 820 21-00N, 121-24E United States Submarine Sunk
        25 Vessels 48,660        
January 2 1945 COAST DEFENSE VESSEL NO 138 Frigate 800e 16-37N, 120-19E United States Army Aircraft Sunk
  3   SPECIAL SUBMARINE CHASER NO 10 Special Submarine Chaser 100 7-04N, 125-37E United States Army Aircraft Sunk
  5   TRANSPORT NO 107 Tank Landing Ship 1,000e 26-27N, 141-11E United States Surface Craft Sunk
  5   TRANSPORT NO 154 Tank Landing Ship 1,000e 24-47N, 141-20E United States Surface Craft Sunk
  5   MOMI Destroyer 800 14-00N, 120-20E United States Navy Carrier-
Based Aircraft
Sunk
  9   COAST DEFENSE VESSEL NO 3 Frigate 800e 25-10N, 121-45E United States Navy Carrier-
Based Aircraft
Sunk
  9   SPECIAL SUBMARINE CHASER NO 96 Special Submarine Chaser 100e 22-40N, 120-00E United States Navy Carrier-
Based Aircraft
Sunk
  9   SUBMARINE CHASER NO 61 Submarine Chaser 300e 22-40N, 120-04E United States Navy Carrier-
Based Aircraft
Sunk
  10   COAST DEFENSE VESSEL NO 42 Frigate 800e 27-01N, 126-34E United States Submarine Sunk

--20--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January     12 1945 CHIBURI Frigate 900e 10-20N, 107-50E United States Navy Carrier-
Based Aircraft
Sunk
  12   COAST DEFENSE VESSEL NO 17 Frigate 800e 10-20N, 107-50E United States Navy Carrier-
Based Aircraft
Sunk
  12   COAST DEFENSE VESSEL NO 19 Frigate 800e 10-20N, 107-50E United States Navy Carrier-
Based Aircraft
Sunk
  12   COAST DEFENSE VESSEL NO 23 Frigate 800e 14-15N, 109-10E United States Navy Carrier-
Based Aircraft
Sunk
  12   COAST DEFENSE VESSEL NO 35 Frigate 800e 11-10N, 108-55E United States Navy Carrier-
Based Aircraft
Sunk
  12   COAST DEFENSE VESSEL NO 43 Frigate 800e 11-10N, 108-55E United States Navy Carrier-
Based Aircraft
Sunk
  12   COAST DEFENSE VESSEL NO 51 Frigate 800e 14-15N, 109-10E United States Navy Carrier-
Based Aircraft
Sunk
  12   SUBMARINE CHASER NO 31 Submarine Chaser 440e 11-10N, 108-55E United States Navy Carrier-
Based Aircraft
Sunk
  12   SUBMARINE CHASER NO 43 Submarine Chaser 440e 11-53N, 109-08E United States Navy Carrier-
Based Aircraft
Sunk
  12   MINESWEEPER NO 101 Minesweeper 630e 11-10N, 108-55E United States Navy Carrier-
Based Aircraft
Sunk
  12   TRANSPORT NO 140 Tank Landing Ship 1,000e 10-20N, 107-50E United States Navy Carrier-
Based Aircraft
Sunk
  12   KASHII Training Cruiser 6,000 13-50N, 109-20E United States Navy Carrier-
Based Aircraft
Sunk
  12   PATROL BOAT NO 103 Yacht 840 11-10N, 108-55E United States Navy Carrier-
Based Aircraft
Sunk
  13   RO 47 Submarine 965 12-08N, 154-27E United States Surface Craft Sunk
  14   YURISHIMA Special Minelayer 720 5-51N, 103-16E United States Submarine Sunk
  15   HATAKAZE Destroyer 1,270 22-37N, 120-15E United States Navy Carrier-
Based Aircraft
Sunk
  15   TSUGA Old Destroyer 820 23-33N, 119-33E United States Navy Carrier-
Based Aircraft
Sunk
  15   TRANSPORT NO 14 High Speed Transport 1,500 22-37N, 120-15E United States Navy Carrier-
Based Aircraft
Sunk
  17   TRANSPORT NO 15 High Speed Transport 1,500e 31-09N, 130-29E United States Submarine Sunk
  21   TRANSPORT NO 101 Tank Landing Ship 1,000e 22-37N, 120-15E United States Navy Carrier-
Based Aircraft
Sunk
  21   TRANSPORT NO 102 Tank Landing Ship 1,000e 11-03N, 123-05E United States Navy Carrier-
Based Aircraft
Sunk
  24   SHIGURE Destroyer 1,580 6-00N, 103-48E United States Submarine Sunk
  27   SPECIAL MINESWEEPER NO 102 Special Minesweeper 174 8-37S, 115-39E United States Submarine Sunk
  28   KUME Frigate 900e 33-56N, 123-06E United States Submarine Sunk
  31   RO 115 Submarine 525 13-20N, 119-20S United States Surface Craft Sunk

--21--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January     31 1945 UME Destroyer 2,100e 22-30N, 120-00E United States Army Aircraft Sunk
        35 Vessels 34,804        
February 1 1945 TRANSPORT NO 115 Tank Landing Ship 1,000e 20-00N, 121-00E United States Army Aircraft Sunk
  2   COAST DEFENSE VESSEL NO 144 Frigate 800e 4-32N, 104-30E United States Submarine Sunk
  7   RO 55 Submarine 889 15-27N, 119-25E United States Surface Craft Sunk
  7   COAST DEFENSE VESSEL NO 53 Frigate 800 12-04N, 109-22E United States Submarine Sunk
  9   I 41 Submarine 2,212 18-50N, 121-40E United States Submarine Sunk
  11   RO 112 Submarine 525 18-53N, 121-50E United States Submarine Sunk
  12   RO 113 Submarine 525 19-10N, 121-23E United States Submarine Sunk
  14   COAST DEFENSE VESSEL NO 9 Frigate 800e 34-48N, 125-58E United States Submarine Sunk
  14   SPECIAL SUBMARINE CHASER NO 4 Special Submarine Chaser 100e 8-20S, 115-45E United States Submarine Sunk
  14   SPECIAL SUBMARINE CHASER NO 144 Special Submarine Chaser 100e 8-20S, 115-45E United States Submarine Sunk
  16   NARIU Special Minelayer 720 32-10N, 135-54E United States Submarine Sunk
  17   TRANSPORT NO 114 Tank Landing Ship 1,000e 23-04N, 120-30E United States Army Aircraft Sunk
  17   COAST DEFENSE VESSEL NO 56 Frigate 750e 33-53N, 139-43E United States Submarine Sunk
  20   NOKAZE Destroyer 1,300 12-48N, 109-38E United States Submarine Sunk
  23   SUBMARINE CHASER NO 35 Submarine Chaser 440 10-15N, 107-31E United States Army Aircraft Sunk
  23   YAKU Frigate 900e 12-39N, 109-29E United States Submarine Sunk
  24   RO 49 Submarine 965 32-40N, 132-33E United States Submarine Sunk
  25   I 370 Submarine 1,470 22-45N, 141-27E United States Surface Craft Sunk
  25   RO 43 Submarine 965 25-07N, 140-19E United States Navy Carrier-
Based Aircraft
Sunk
  25   SHONAN Frigate 900e 17-08N, 110-01E United States Submarine Sunk
  26   I 368 Submarine 1,470 24-43N, 140-37E United States Navy Carrier-
Based Aircraft
Sunk
        21 Vessels 18,631        
March 1 1945 MANAZURU Torpedo Boat 527 26-17N, 127-35E United States Navy Carrier-
Based Aircraft
Sunk
  1   TSUBAME Special Minelayer 450 24-23N, 124-12E United States Navy Carrier-
Based Aircraft
Sunk
  2   TRANSPORT NO 143 Tank Landing Ship 1,000e 23-35N, 121-35E United States Army Aircraft Probably sunk
  3   HARIO Miscellaneous Auxiliary 4,000e 18-10N, 109-40E Australia Mine* Sunk
  4   SUBMARINE CHASER NO 8 Submarine Chaser 290 4-04N, 100-35E Great Britain Submarine Sunk
*Probable Agent

--22--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
March       5 1945 SPECIAL SUBMARINE CHASER NO 110 Special Submarine Chaser 100e 8-36S, 119-19E United States Army Aircraft Sunk
  5   MINESWEEPER NO 15 Minesweeper 492 29-30N, 129-33E United States Submarine Sunk
  8   COAST DEFENSE VESSEL NO 69 Frigate 800e 19-02N, 110-56E United States Army Aircraft Sunk
  13   COAST DEFENSE VESSEL NO 66 Frigate 880 23-30N, 117-10E United States Army Aircraft Sunk
  18   TRANSPORT NO 18 High Speed Transport 1,500e 26-33N, 127-11E United States Submarine* Sunk
  19   SUMA River Gunboat 625 32-00N, 120-00E United States Army Mine Sunk
  21   SUBMARINE CHASER NO 33 Submarine Chaser 300 11-50N, 109-18E United States Army Aircraft Sunk
  21   TATEISHI Repair Ship 2,000e 11-50N, 109-18E United States Army Aircraft Sunk
  22   I 371 Submarine 1,660 22-57N, 132-19E United States Surface Craft Sunk
  24   COAST DEFENSE VESSEL NO 68 Frigate 800e 28-25N, 124-32E United States Navy Carrier-
Based Aircraft
Sunk
  24   TOMOZURU Frigate 527 28-25N, 124-32E United States Navy Carrier-
Based Aircraft
Probably sunk
  26   SUBMARINE CHASER NO 34 Submarine Chaser 300 10-35N, 94-45E Great Britain Surface Craft Sunk
  26   SUBMARINE CHASER NO 63 Submarine Chaser 300e 10-35N, 94-45E Great Britain Surface Craft Sunk
  27   SPECIAL MINELAYER NO 1 Special Minelayer 500e 3-52N, 98-45E Great Britain Mine Sunk
  27   ODATE Repair Ship 1,564 30-40N, 127-50E United States Submarine* Sunk
  28   COAST DEFENSE VESSEL NO 33 Frigate 800e 31-45N, 131-40E United States Navy Carrier-
Based Aircraft
Sunk
  28   MINESWEEPER NO 11 Minesweeper 492 5-10S, 119-05E United States Army Aircraft Sunk
  28   PATROL BOAT NO 108 Yacht 108 4-15S, 119-05E United States Army Aircraft Sunk
  28   MIKURA Frigate 900e 31-49N, 131-44E United States Submarine Sunk
  29   COAST DEFENSE VESSEL NO 18 Frigate 1,000e 14-30N, 109-15E United States Army Aircraft Sunk
  29   COAST DEFENSE VESSEL NO 130 Frigate 1,000e 14-39N, 109-16E United States Army Aircraft Sunk
  29   SPECIAL SUBMARINE CHASER NO 192 Special Submarine Chaser 100e 22-40N, 120-15E United States Army Aircraft Sunk
  29   COAST DEFENSE VESSEL NO 84 Frigate 1,000e 14-30N, 109-16E United States Submarine Sunk
  30   I 8 Submarine 1,995 25-29N, 128-35E United States Surface Craft Sunk
        29 Vessels 25,930        
April 2 1945 COAST DEFENSE VESSEL NO 186 Frigate 800e 28-07N, 129-09E United States Navy Carrier-
Based Aircraft
Probably sunk
  2   TRANSPORT NO 17 High Speed Transport 1,500 28-07N, 129-09E United States Navy Carrier-
Based Aircraft
Sunk
*Probable Agent

--23--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
April        2 1945 TRANSPORT NO 145 Tank Landing Ship 1,000e 28-07N, 129-09E United States Navy Carrier-
Based Aircraft
Sunk
  4   RO 41 Submarine 965 26-22N, 126-30E United States Surface Craft Sunk
  4   RO 64 Submarine 988 34-14N, 132-16S United States Army Mine Sunk
  4   RO 67 Submarine 988 34-00N, 133-00S United States Army Mine Sunk
  4   MOKUTO Frigate 900e 33-53N, 131-03E United States Army Mine Sunk
  6   AMATSUKAZE Destroyer 1,900 24-30N, 118-10E United States Army Aircraft Sunk
  6   COAST DEFENSE VESSEL NO 1 Frigate 1,000e 24-30N, 118-10E United States Army Aircraft Sunk
  6   COAST DEFENSE VESSEL NO 134 Frigate 1,000e 24-30N, 118-10E United States Army Aircraft Sunk
  6   MINESWEEPER NO 12 Minesweeper 630 8-13S, 119-145 United States Submarine Sunk
  7   YAMATO Battleship 63,000 30-54N, 128-10E United States Navy Carrier-
Aircraft
Sunk
  7   YAHAGI Light Cruiser 7,000 30-54N, 128-10E United States Navy Carrier-
Based Aircraft
Sunk
  7   ASASHIMO Destroyer 2,100 31-00N, 128-00S United States Navy Carrier-
Based Aircraft
Sunk
  7   HAMAKAZE Destroyer 1,900 31-00N, 128-00E United States Navy Carrier-
Based Aircraft
Sunk
  7   ISOKAZE Destroyer 1,900 31-00N, 128-00E United States Navy Carrier-
Based Aircraft
Sunk
  7   KASUMI Destroyer 1,850 31-00N, 128-00E United States Navy Carrier-
Based Aircraft
Sunk
  7   ISUZU Light Cruiser 5,700 7-38S, 118-09E United States Submarine Sunk
  8   RO 46 Submarine 965 26-09N, 130-21E United States Surface Craft Sunk
  8   SPECIAL SUBMARINE CHASER NO 101 Special Submarine Chaser 100e 4-35S, 122-17E United States Army Aircraft Sunk
  9   MINESWEEPER NO 3 Minesweeper 615 39-06N, 141-57E United States Submarine Sunk
  10   I 44 Submarine 2,212 23-12N, 132-23E United States Surface Craft Sunk
  11   SUBMARINE CHASER NO 7 Submarine Chaser 270 8-57N, 93-38E Great Britain Army Aircraft Sunk
  13   SPECIAL MINESWEEPER NO 104 Special Minesweeper 215e 8-05S, 115-06E Great Britain Submarine Sunk
  14   COAST DEFENSE VESSEL NO 31 Frigate 800e 33-25N, 126-15E United States Submarine Sunk
  14   NOMI Frigate 900e 33-25N, 126-15E United States Submarine Sunk
  16   COAST DEFENSE VESSEL NO 73 Frigate 800e 39-36N, 142-05E United States Submarine Sunk
  17   I 56 Submarine 2,140 26-42N, 130-38E United States Navy Carrier-
Based Aircraft Surface Craft
Sunk
  17   RO 56 Submarine 889 19-17N, 166-35E United States Submarine Sunk
  25   MINESWEEPER NO 41 Minesweeper 492 25-53N, 121-08E United States Submarine Sunk
  26   SPECIAL MINESWEEPER NO 3 Special Minesweeper 215e 4-50S, 115-40E Great Britain Submarine Sunk

--24--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
April        28 1945 SUBMARINE CHASER NO 17 Submarine Chaser 440 32-34N, 128-52E United States Submarine Sunk
  28   TRANSPORT NO 146 Tank Landing Ship 1,000e 32-24N, 128-40E United States Submarine Sunk
  28   HATSUSHIMA Repair Ship 2,000e 33-58N, 136-17E United States Submarine Sunk
  29   RO 109 Submarine 525 24-15N, 131-16E United States Navy Carrier-
Based Aircraft
Sunk
        35 Vessels 109,699        
May 2 1945 OJIKA Frigate 1,000e 33-58N, 122-58E United States Submarine Sunk
  3   COAST DEFENSE VESSEL NO 25 Frigate 1,000e 34-38N, 124-15E United States Submarine Sunk
  4   MINESWEEPER NO 20 Minesweeper 492 34-16N, 123-37E United States Submarine Sunk
  7   MINESWEEPER NO 29 Minesweeper 630e 34-02N, 130-54E United States Army Mine Sunk
  8   SPECIAL SUBMARINE CHASER NO 210 Special Submarine Chaser 100e 23-00N, 115-00E United States Army Aircraft Sunk
  16   HATSUTAKA Minelayer 1,500 4-54N, 103-28E United States Submarine Sunk
  16   HAGURO Heavy Cruiser 12,700 5-00N, 99-30E Great Britain Surface Craft Sunk
  21   MINESWEEPER NO 34 Minesweeper 492 6-15S, 116-01E United States Submarine Sunk
  22   SUBMARINE CHASER NO 37 Submarine Chaser 440e 29-45N, 129-10E United States Navy Carrier- Based Aircraft Sunk
  22   SUBMARINE CHASER NO 58 Submarine Chaser 440e 29-45N, 129-10E United States Navy Carrier-Based Aircraft Sunk
  22   TRANSPORT NO 173 Tank Landing Ship 1,000e 29-45N, 129-10E United States Navy Carrier-Based Aircraft Sunk
  25   SPECIAL MINESWEEPER NO 105 Special Minesweeper 200e 6-23S, 110-55E Great Britain Submarine Sunk
  26   SPECIAL SUBMARINE CHASER NO 172 Special Submarine Chaser 100e 36-48N, 137-05E United States Army Mine Sunk
  28   COAST DEFENSE VESSEL NO 29 Frigate 800e 33-07N, 129-44E United States Army Mine Sunk
  30   I 12 Submarine 2,443 22-22N, 134-09E United States Navy Carrier- Based Aircraft Sunk
        15 Vessels 23,337        
June - 1945 I 361 Submarine 1,470 Off Japan Unknown Unknown Sunk
  4   SPECIAL SUBMARINE CHASER NO 112 Special Submarine Chaser 300e 5-00S, 116-04E United States Army Aircraft Sunk
  6   SPECIAL SUBMARINE CHASER NO 195 Special Submarine Chaser 100e 37-10N, 137-05E United States Army Mine Sunk
  8   ASHIGARA Heavy Cruiser 12,700 1-59S, 104-57E Great Britain Submarine Sunk
  9   COAST DEFENSE VESSEL NO 41 Frigate 800e 34-18N, 127-18E United States Submarine Sunk
  10   I 122 Submarine 1,142 37-29N, 137-25E United States Submarine Sunk
  11   SPECIAL SUBMARINE CHASER NO 237 Special Submarine Chaser 100e 34-35N, 132-20E United States Navy Land-
Based Aircraft
Sunk

--25--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
June       12 1945 SUBMARINE CHASER NO 57 Submarine Chaser 440e 6-20N, 94-45E Great Britain Surface Craft Sunk
  12   TRANSPORT NO 149 Tank Landing Ship 1,000e 6-20N, 94-45E Great Britain Surface Craft Sunk
  23   SHUTTLE BOAT NO 833 Miscellaneous Auxiliary 200e 5-50S, 114-18E United States Submarine Sunk
  23   SPECIAL SUBMARINE CHASER NO 42 Special Submarine Chaser 100 5-50S, 114-18E United States Submarine Sunk
  23   SPECIAL SUBMARINE CHASER NO 113 Special Submarine Chaser 200e 5-50S, 114-18E United States Submarine Sunk
  27   I 165 Submarine 1,635 15-28N, 153-39E United States Navy Land-Based Aircraft Sunk
  27   SUBMARINE CHASER NO 2 Submarine Chaser 300 7-25S, 116-00E United States Submarine Sunk
  28   ENOKI Destroyer 1,260 35-26N, 135-44E United States Army Mine Sunk
        15 Vessels 21,747        
July 1 1945 COAST DEFENSE VESSEL NO 72 Frigate 800 38-08N, 124-38E United States Submarine Sunk
  2   SPECIAL SUBMARINE CHASER NO 188 Special Submarine Chaser 100e 33-59N, 130-52E United States Army Mine Sunk
  5   SPECIAL SUBMARINE CHASER NO 37 Special Submarine Chaser 100 8-10S, 114-50E United States Submarine Sunk
  7   NARA Destroyer 1,000e 33-54N, 130-49E United States Army Mine Sunk
  9   SPECIAL SUBMARINE CHASER NO 50 Special Submarine Chaser 100e 2-13N, 105-03E United States Submarine Sunk
  10   MINESWEEPER NO 27 Minesweeper 630e 39-20N, 142-07E United States Submarine Sunk
  11   SAKURA Destroyer 1,000 35-50N, 135-20E United States Army Mine Sunk
  14   TACHIBANA Destroyer 1,000e 41-48N, 140-41E United States Navy Carrier- Based Aircraft Sunk
  14   COAST DEFENSE VESSEL NO 65 Frigate 800e 42-21N, 140-59E United States Navy Carrier- Based Aircraft Sunk
  14   COAST DEFENSE VESSEL NO 74 Frigate 800e 42-21N, 140-59E United States Navy Carrier-Based Aircraft Sunk
  14   COAST DEFENSE VESSEL NO 219 Frigate 800e 41-48N, 140-41E United States Navy Carrier-Based Aircraft Sunk
  14   I 351 Submarine 2,650 4-30N, 110-00E United States Submarine Sunk
  15   MINESWEEPER NO 24 Minesweeper 630e 41-38N, 141-00E United States Navy Carrier-Based Aircraft Sunk
  15   I 13 Submarine 2,640 34-28N, 150-55E United States Navy Carrier-Based Aircraft Surface Craft Sunk
  16   KARI Torpedo Boat 595 5-48S, 115-53E United States Submarine Sunk
  18   KASUGA Old Heavy Cruiser 7,080 35-18N, 139-40E United States Navy Carrier-Based Aircraft Sunk
  18   COAST DEFENSE VESSEL NO 112 Frigate 800e 46-03N, 142-16E United States Submarine Sunk

--26--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
July       20 1945 MINESWEEPER NO 39 Minesweeper 630e 35-01N, 125-42E United States Submarine Sunk
  23   SPECIAL SUBMARINE CHASER NO 117 Special Submarine Chaser 200e 8-10S, 115-29E United States Submarine Sunk
  24   AMAGI Aircraft Carrier 18,500 34-11N, 132-30E United States Navy Carrier-Based Aircraft Sunk
  24   TONE Heavy Cruiser 12,000 34-14N, 132-27E United States Navy Carrier-Based Aircraft Sunk
  24   HYUGA Battleship 34,500 34-10N, 132-33E United States Navy Carrier-Based Aircraft Sunk
  24   KAIYO Escort Aircraft Carrier 17,000 33-21N, 131-32E United States Army Aircraft Army Mine Navy Carrier-Based Aircraft Sunk
  25   PATROL BOAT NO 2 Old Destroyer 750e 7-07S, 115-40E Great Britain Submarine Sunk
  27   TRANSPORT NO 176 Tank Landing Ship 1,000e 31-00N, 130-33E United States Army Aircraft Sunk
  28   AOBA Heavy Cruiser 8,800 34-13N, 132-31E United States Navy Carrier-Based Aircraft Sunk
  28   I 372 Submarine 1,660 33-00N, 133-00E United States Navy Carrier-Based Aircraft Sunk
  28   HARUNA Battleship 31,000 34-15N, 132-29E United States Navy Carrier-Based Aircraft Sunk
  28   ISE Battleship 34,500 34-12N, 132-31E United States Navy Carrier-Based Aircraft Sunk
  28   OYODO Light Cruiser 8,500 34-13N, 132-25E United States Navy Carrier-Based Aircraft Sunk
  28   NASHI Destroyer 850 34-14N, 132-30E United States Navy Carrier-Based Aircraft Sunk
  28   COAST DEFENSE VESSEL NO 4 Frigate 800e 34-00N, 134-50E Great Britain Aircraft Sunk
  28   COAST DEFENSE VESSEL NO 30 Frigate 800e 34-43N, 136-43E Great Britain Aircraft Sunk
  28   IWATE Old Heavy Cruiser 9,180 34-14N, 132-30E United States Navy Carrier-Based Aircraft Sunk
  28   IZUMO Old Heavy Cruiser 9,180 34-14N, 132-30E United States Navy Carrier-Based Aircraft Sunk
  29   SPECIAL SUBMARINE CHASER NO 207 Special Submarine Chaser 100e 32-00N, 130-00E United States Army Aircraft Sunk
  30   OKINAWA Frigate 900e 35-30N, 135-21E United States Navy Carrier-Based Aircraft Sunk
  30   HATSUSHIMO Destroyer 1,600 35-33N, 135-12E United States Army Mine Sunk
        38 Vessels 213,975        

--27--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
August   7 1945 COAST DEFENSE VESSEL NO 39 Frigate 800e 35-06N, 129-03E United States Army Aircraft Sunk
  7   SPECIAL SUBMARINE CHASER NO 66 Special Submarine Chaser 100e 7-23N, 151-53E United States Army Aircraft Sunk
  9   AMAKUSA Frigate 860 38-26N, 141-30E United States

Great Britain
Navy Carrier-Based Aircraft
Aircraft
Sunk
  9   INAGI Frigate 900e 38-26N, 141-30E United States

Great Britain
Navy Carrier-Based Aircraft
Aircraft
Sunk
  9   MINESWEEPER NO 1 Minesweeper 615 38-26N, 141-30E United States Navy Carrier-Based Aircraft Sunk
  9   MINESWEEPER NO 33 Minesweeper 630e 38-26N, 141-30E United States Navy Carrier-Based Aircraft Sunk
  9   TRANSPORT NO 21 High Speed Transport l,500e 33-59N, 132-31E United States Army Aircraft Sunk
  9   COAST DEFENSE VESSEL NO 82 Frigate 800e 41-21N, 131-12E Russia Aircraft* Sunk
  10   SUBMARINE CHASER NO 42 Submarine Chaser 440e 38-26N, 141-30E United States Navy Carrier-Based Aircraft Sunk
  13   I 373 Submarine 1,660 29-02N, 123-53E United States Submarine Sunk
  13   COAST DEFENSE VESSEL NO 6 Frigate 800e 42-11N, 142-14E United States Submarine Sunk
  14   COAST DEFENSE VESSEL NO 13 Frigate 800e 35-42N, 134-35E United States Submarine Sunk
  14   COAST DEFENSE VESSEL NO 47 Frigate 800e 35-42N, 134-36E United States Submarine Sunk
  15   KANJU Frigate 860 39-10N, 127-27E Russia Aircraft* Sunk
        14 Vessels 11,565        
*Probable Agent

--28--

JAPANESE MERCHANT VESSEL SUNK DURING WORLD WAR II
(Chronological)

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
December 8 1941 AWAJISAN MARU Passenger-Cargo 9,794 6-03N, 102-16E Australia Aircraft Sunk
  10  

TAKAO MARU

Passenger-Cargo 4,281 17-29N, 120-26E United States Army Aircraft
U.S. Sabotage
Sunk
  12   TORO MARU Cargo 1,939 6-08N, 102-16E Netherlands Submarine Sunk
  13   NIKKOKU MARU Cargo 2,728 13-00N, 110-00E Japan Marine Casualty Sunk
  14   MIHARU MARU Cargo 3,857 41-55N, 143-15E Japan Marine Casualty Sunk
  14   ZUIKO MARU Converted Gunboat 2,577 48-05N, 153-43E Japan Marine Casualty Sunk
  16   ATSUTASAN MARU Cargo 8,662 18-06N, 109-44E United States Submarine Sunk
  22   HAYO MARU Cargo 5,445 16-37N, 120-17E United States Submarine Sunk
  23   HAYATAKA MARU Cargo 856 17-35N, 120-12E United States Submarine Sunk
  23   KATORI MARU Cargo 9,849 2-30N, 110-00E Netherlands Submarine Sunk
  23   HIE MARU Passenger-Cargo 4,943 2-30N, 110-00E Netherlands Submarine Sunk
  26   UNYO MARU NO 2 Converted Salvage Vessel 2,827 1-34N, 110-213 Netherlands Aircraft Sunk
        12 Vessels 57,758        
January 1 1942 TEIUN MARU Cargo 1,615 16-05N, 120-20E Japan Mine Sunk
  3   MEIKO MARU Passenger-Cargo 4,383 18-18N, 109-42E Japan Marine Casualty Sunk
  7   UNKAI MARU NO 1 Cargo 2,225 34-27N, 138-59E United States Submarine Sunk
  9   TEIAN MARU Cargo 5,387 35-00N, 140-36E United States Submarine Sunk
  10   AKITA MARU Passenger-Cargo 3,817 7-40N, 102-50E Netherlands Submarine Sunk
  10   KANKO MARU Converted Gunboat 2,929 6-12N, 125-55E United States Submarine Sunk
  10   HARBIN MARU Transport 5,167 17-40N, 109-20E United States Submarine Sunk
  16   TAISHU MARU Cargo 1,220 42-00N, 139-00E Japan Marine Casualty Sunk
  17   FUKUSEI MARU Passenger-Cargo 5,822 31-00N, 122-00E Japan Marine Casualty Sunk
  17   SHINZUI MARU Cargo 2,964 25-03N, 121-04E Japan Marine Casualty Sunk
  18   EIZAN MARU Cargo 4,702 33-30N, 135-00E United States Submarine Sunk
  24   KURETAKE MARU Cargo 5,175 00-10N, 118-00E United States Surface Craft Sunk
  24   TSURUGA MARU Passenger-Cargo 6,988 00-10N, 118-00E United States Surface Craft Sunk
  24   TATSUKAMI MARU Passenger-Cargo 7,064 00-10N, 118-00E United States Surface Craft Sunk
  24   SUMANOURA MARU Passenger-Cargo 3,519 00-10N, 118-00E United States Surface Craft Sunk
  24   NANA MARU Passenger-Cargo 6,764 00-10N, 118-00E Netherlands Aircraft Sunk
  24   MYOKEN MARU Cargo 4,124 1-22N, 125-05E United States Submarine Sunk
        17 Vessels 73,865        

--29--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
February 1 1942 BORDEAUX MARU Passenger-Cargo 6,566 9-28N, 170-15E United States Surface Craft Sunk
  1   TOYOTSU MARU Converted Gunboat 2,930 9-28N, 170-15E United States Surface Craft Sunk
  2   TAMAGAWA MARU Passenger-Cargo 6,441 17-16N, 119-48E United States Submarine Sunk
  9   KURAMA Passenger-Cargo 6,788 East China Sea Unknown Unknown Sunk
  10   CHUWA MARU Cargo 2,719 25-30N, 122-38E United States Submarine Sunk
  14   INABASAN MARU Cargo 989 1-25S, 105-00E United States
Great Britain
Netherlands
Army Aircraft
Aircraft
Aircraft
Sunk
  17   SHINYO MARU NO 5 Cargo 1,498 32-14N 127-14E United States Submarine Sunk
  21   SHOKYU MARU Cargo 4,434 32-10N, 126-28E United States Submarine Sunk
  25   FUJISHIMA MARU Cargo 4,876 35-09N, 140-18E Japan Marine Casualty Sunk
        9 Vessels 37,291        
March    1 1942 SAKURA MARU Passenger-Cargo 7,170 5-56S, 106-12E United States
United States
Australia
Netherlands
Netherlands
Army Aircraft
Surface Craft
Aircraft
Aircraft
Surface Craft
Sunk
  1   HORAI MARU Passenger-Cargo 9,192 5-56S, 106-12E United States
United States
Australian
Netherlands
Netherlands
Army Aircraft
Surface Craft
Aircraft
Aircraft
Surface Craft
Sunk
  1   KAIJO MARU NO 2 Tanker 8,636 4-52N, 151-20E United States Submarine Sunk
  2   KAMOGAWA MARU Aircraft Ferry 6,440 8-06S, 115-57E United States Submarine Sunk
  4   MORIOKA MARU Cargo 4,469 32-55N, 129-26E Japan Mine* Sunk
  4   TAKI MARU Cargo 1,244 28-37N, 129-10E United States Submarine Sunk
  4   ERIMO Tanker 6,500 4-19S, 108-25E United States Submarine Sunk
  4   UNKNOWN MARU Cargo 4,000e 32-33N, 133-26E United States Submarine Sunk
  10   YOKOHAMA MARU Cargo 6,143 7-01S, 147-07E United States Army Aircraft Navy Carrier-Based Aircraft Sunk
  10   KONGO MARU Converted Light Cruiser 8,624 6-49S, 147-02E United States Navy Carrier-Based Aircraft Sunk
  10   TENYO MARU Converted Minesweeper 6,843 6-49S, 147-02E United States Navy Carrier-Based Aircraft Sunk
  10   KOSEI MARU Passenger-Cargo 6,667 16-05N, 120-20E Japan Mine Sunk
  11   FUKUSHU MARU Cargo 1,454 30-53N, 126-20E United States Submarine Sunk
  13   CHICHIBU MARU Cargo 1,520 33-53N, 139-29E United States Submarine Sunk
  17   YUBARI MARU Cargo 4,109 3-05S, 114-21E Netherlands Aircraft* Sunk
* Probable Agent

--30--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
March    17 1942 ISHIKARI MARU Cargo 3,291 27-05N, 142-05E United States Submarine Sunk
  26   UNKNOWN MARU Cargo 4,000e 32-31N, 127-10E United States Submarine Sunk
  27   KITANO MARU Passenger-Cargo 7,951 16-10N, 120-24E Japan Mine* Sunk
  27   UNKNOWN MARU Passenger-Cargo 4,000e 33-53N, 127-33E United States Submarine Sunk
  30   CHOKO MARU Cargo 842 5-39S, 119-00E United States Submarine Sunk
        20 Vessels 103,095        
April           1 1942 YAE MARU Cargo 6,781 5-42N, 98-57E Great
Britain
Submarine Sunk
  1   SHUNSEI MARU Cargo 4,939 5-42N, 93-57E Great
Britain
Submarine Sunk
  10   SADO MARU Cargo 3,039 34-52N, 139-15E United States Submarine Sunk
  11   TAIJUN MARU Cargo 1,274 6-49S, 147-02E United States Army Aircraft Sunk
  13   RYUJIN MARU Cargo 6,243 31-51N, 132-50E United States Submarine Sunk
  17   UNKNOWN MARU Cargo 4,000e 10-53N, 121-35E United States Submarine Sunk
  18   KOMAKI MARU Transport 8,525 4-12S, 152-10E United States Army Aircraft Sunk
  23   UNKNOWN MARU Trawler 1,000e 28-22N, 153-18E United States Submarine Probably sunk
  25   TOBA MARU Cargo 6,995 17-01N, 120-15E United States Submarine Probably sunk
        9 Vessels 42,796        
May         1 1942 CALCUTTA MARU Passenger-Cargo 5,339 28-07N, 123-45E United States Submarine Sunk
  2   UZAN MARU Cargo 5,014 33-26N, 135-52E United States Submarine Sunk
  4   KINJOSAN MARU Cargo 3,262 8-44N, 150-56E United States Submarine Sunk
  4   KONGOSAN MARU Converted Gunboat 2,119 33-32N, 136-05E United States Submarine Sunk
  6   KANAN MARU Cargo 2,567 12-05N, 109-35E United States Submarine Sunk
  6   TAIEI MARU Cargo 2,209 28-42N, 123-50E United States Submarine Sunk
  6   TAIGEN MARU Passenger-Cargo 5,660 28-19N, 123-33E United States Submarine Sunk
  8   BUJUN MARU Cargo 4,804 12-00N, 111-10E United States Submarine Sunk
  8   TAIYO MARU Transport 14,457 30-40N, 127-54E United States Submarine Sunk
  9   UNKNOWN MARU Cargo 4,000e 33-48N, 136-08E United States Submarine Probably sunk
  10   ORIDONO MARU Cargo 5,278 7-00S, 112-40E Japan Mine* Sunk
  12   SHOEI MARU Converted Salvage Vessel 5,644 4-51S, 152-54E United States Submarine Sunk
  13   SHONAN MARU Cargo 5,264 34-39N, 139-10E United States Submarine Sunk
  13   NAGASAKI MARU Transport 5,268 33-00N, 129-40E Japan Mine Sunk
  15   TOYOHARA MARU Cargo 805 33-34N, 125-09E United States Submarine Sunk
  17   UNKNOWN MARU Cargo 4,000e 33-28N, 135-33E United States Submarine Sunk
  17   TAZAN MARU Passenger-Cargo 5,478 6-22N, 108-36E United States Submarine Sunk
  25   KITAKATA MARU Cargo 2,380 34-53N, 140-04E United States Submarine Sunk
  25   TOKYO MARU Tanker 902 27-03N, 127-03E United States Submarine Sunk
  25   SHOKA MARU Cargo 4,467 4-07N, 143-32E United States Submarine Sunk
  28   GANGES MARU Passenger-Cargo 4,382 9-00N, 111-00E United States Submarine Sunk
* Probable Agent

--31--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
May         28 1942 TATSUFUKU MARU Cargo 1,946 7-27N, 116-17E United States Submarine Sunk
  29   UNKNOWN MARU Cargo 1,900e 7-33N, 116-18E United States Submarine Sunk
  30   ATSUTA MARU Transport 7,983 26-07N, 129-06E United States Submarine Sunk
        24 Vessels 105,123        
June         1 1942 KOFUKU MARU Passenger-Cargo 5,822 16-16N, 96-18E United States Army Aircraft Sunk
  4   TOYOHASHI MARU Passenger-Cargo 7,031 7-30N, 93-10E Great
Britain
Submarine Sunk
  12   BURMA MARU Cargo 4,584 10-08N, 102-34E United States Submarine Sunk
  14   TAIZAN MARU Cargo 3,930 35-00N, 125-00E Japan Marine Casualty Sunk
  15   NAMPO MARU Converted Gunboat 1,206 14-20N, 120-20E United States Submarine Sunk
  18   TAIRYU MARU Cargo 2,209 34-33N, 125-53E Japan Marine Casualty Sunk
  18   NISSAN MARU Cargo 6,537 51-58N, 177-40E United States Army Aircraft Sunk
  21   KEIJO MARU Converted Gunboat 2,626 9-003, 160-00E United States Submarine Sunk
  28   SAIKYO MARU Converted Gunboat 1,292 12-41N, 136-22E United States Submarine Sunk
  30   UNKAI MARU NO 5 Cargo 3,282 30-04N, 122-54E United States Submarine Sunk
        10 Vessels 38,519        
July      1 1942 MONTEVIDEO MARU Transport 7,267 18-37N, 119-29E United States Submarine Sunk
  2   UNYO MARU NO 3 Cargo 2,997 30-30N, 120-25E United States Submarine Sunk
  7   HARUNA MARU Passenger-Cargo 10,420 34-36N, 138-06E Japan Marine Casualty Sunk
  8   TENZAN MARU Passenger-Cargo 2,776 4-00S, 151-50E United States Submarine Sunk
  9   SHINSHO MARU Motor Torpedo Boat Tender 4,836 8-43N, 167-33E United States Submarine Sunk
  12   HIYAMA MARU Cargo 6,171 13-48N, 109-33E United States Submarine Sunk
  13   MIKAGE MARU NO 3 Cargo 3,111 33-00N, 133-00E Japan Marine Casualty Sunk
  13   SHINYO MARU Passenger-Cargo 4,163 13-04N, 109-39E United States Submarine Sunk
  16   HAKODATE MARU Cargo 5,302 12-55N 109-29E United States Submarine Sunk
  22   AYATOSAN MARU Transport 9,788 8-50S, 148-50E United States
Australian
Army Aircraft
Aircraft
Sunk
  24   UNKNOWN MARU Cargo 1,500e 45-05N, 147-27E United States Submarine Sunk
  28   UNKNOWN MARU Transport 4,000e 33-21N, 139-24E United States Submarine Sunk
        12 Vessels 62,331        
August 1 1942 MEIWA MARU Cargo 2,921 41-12N, 141-36E United States Submarine Sunk
  2   ZENYO MARU Passenger-Cargo 6,441 5-36N, 99-53E Netherlands Submarine Sunk
  3   NANIWA MARU Cargo 4,353 7-37N, 150-18E United States Submarine Sunk
  5   BRASIL MARU Transport 12,752 9-50N, 150-38E United States Submarine Sunk
  6   OHIO MARU Passenger-Cargo 5,872 13-51N, 113-15E United States Submarine* Sunk
  6   PALAO MARU Passenger-Cargo 4,495 9-04N, 150-54E United States Submarine Sunk
* Probably sunk

--32--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
August 7 1942 SHOFUKU MARU Converted Net Tender 891 9-22N, 170-12E United States Submarine Sunk
  8   KOTOKU MARU Transport 6,701 7-01N, 147-07E United States Army Aircraft Sunk
  8   KANO MARU Cargo 8,572 51-58N, 177-33E United States Army Aircraft Surface Craft Sunk
  8   MEIYO MARU Transport 5,628 4-52S, 152-43E United States Submarine  
  8   NIKKEI MARU Passenger-Cargo 5,811 33-33N, 135-23E United States Submarine Sunk
  8   BIFUKU MARU Passenger-Cargo 2,559 41-14N, 141-32E United States Submarine Sunk
  12   UNKNOWN MARU Cargo 4,000e 33-02N, 136-00E United States Submarine Sunk
  14   HACHIGEN MARU Passenger-Cargo 3,113 5-07N, 119-37E United States Submarine Sunk
  21   SHINSEI MARU NO 6 Passenger-Cargo 4,928 6-45N, 158-10E United States Submarine Sunk
  22   UNKNOWN MARU Transport 4,000e 26-07N, 121-29E United States Submarine Sunk
  24   CUBA MARU Passenger-Cargo 5,950 48-00N, 142-30E Japan Marine Casualty Sunk
  24   SEIKAI MARU Passenger-Cargo 3,109 38-12N, 141-30E United States Submarine Sunk
  25   KINRYU MARU Converted Light Cruiser 9,310 7-47S, 160-13E United States Marine Land- Based Aircraft Sunk
  25   SHOWA MARU Cargo 1,349 3-55N, 118-59E United States Submarine Probably sunk
  25   SENYO MARU Converted Gunboat 2,904 22-23N, 120-10E United States Submarine Sunk
  26   TEISHUN MARU Cargo 2,251 27-05N, 121-23E United States Submarine Sunk
  31   EIFUKU MARU Cargo 5,866 25-43N, 122-38E United States Submarine Sunk
        23 Vessels 114,281        
September 2 1942 TEIKYU MARU Cargo 2,332 42-08N, 141-15E United States Submarine Sunk
  4   KASHINO Supply Ship 4,000e 25-43N, 122-38E United States Submarine Sunk
  4   CHITA MARU Cargo 2,276 40-10N, 141-53E Unites States Submarine Sunk
  4   TENYU MARU Cargo 3,738 40-14N, 141-51E United States Submarine Sunk
  4   KAIMEI MARU Cargo 5,254 40-14N, 141-51E United States Submarine Sunk
  7   TAIKA MARU Cargo 2,204 25-31N, 121-33E United States Submarine Sunk
  11   KANTO MARU Aircraft Ferry 8,606 3-16S, 118-29E United States Submarine Sunk
  12   NIYO MARU Cargo 1,350 20-15N, 92-35E Great
Britain
Aircraft Sunk
  19   SHIROGANE MARU Passenger-Cargo 3,130 6-33S, 156-05E United States Submarine Sunk
  21   TONE MARU Cargo 4,070 31-18N, 123-27E United States Submarine Sunk
  21   KOEI MARU Converted Net Tender 863 6-54N, 151-51E United States Submarine Sunk
  25   TEIBO MARU Cargo 4,472 10-31N, 109-31E United States Submarine Sunk
  28   NOJIMA MARU Cargo 7,189 51-58N, 177-33E United States Army Aircraft Sunk
  28   TAMON MARU NO 6 Cargo 4,994 40-35N, 141-50E United States Submarine Sunk
        14 Vessels 54,478        
October     1 1942 YOMEI MARU Cargo 2,860 33-35N, 135-15E United States Submarine Sunk
  1   LISBON MARU Transport 7,053 29-57N, 122-56E United States Submarine Sunk
  1   TOSEI MARU Cargo 2,432 41-20N, 141-35E United States Submarine Sunk
  1   KATSURAGI MARU Aircraft Ferry 8,033 5-51S, 153-18E United States Submarine Sunk

--33--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
October     3 1942 KINKAI MARU Cargo 5,852 38-46N, 142-02E United States Submarine Sunk
  4   SETSUYO MARU Cargo 4,147 39-48N, 142-08E United States Submarine Sunk
  7   MIDORI MARU Passenger-Cargo 5,827 31-00N, 122-30E Japan Marine Casualty Sunk
  7   SENKAI MARU Passenger-Cargo 2,095 1-55N, 153-42E United States Submarine Sunk
  7   NAMINOUE MARU Transport 4,731 3-51S, 151-21E United States Submarine Sunk
  8   BORNEO MARU Cargo 5,863 51-56N, 177-27E United States Army Aircraft Sunk
  8   HAGUE MARU Passenger-Cargo 5,641 34-06N, 136-22E United States Submarine Sunk
  9   HACHIMANZAN MARU Cargo 2,461 33-27N, 136-01E United States Submarine Sunk
  10   SHIGURE MARU Cargo 2,445 1-01S, 117-23E United States Submarine Sunk
  11   NICHIEI MARU Cargo 2,012 35-00N, 125-00E Japan Marine Casualty Sunk
  14   TEISON MARU Transport 7,007 25-22N, 121-15E United States Submarine Sunk
  14   SUMIYOSHI MARU Cargo 1,921 3-20S, 150-03E United States Submarine Sunk
  14   SHUNKO MARU Cargo 6,781 5-35N, 144-25E United States Submarine Sunk
  14   TAKUSEI MARU Cargo 3,515 39-33N, 142-15E United States Submarine Sunk
  15   KYUSHU MARU Passenger-Cargo 8,666 9-25S, 159-55E United States Army Aircraft Navy Land-
Based Aircraft Marine Land-
Based Aircraft
Sunk
  15   SASAKO Passenger-Cargo 9,258 9-25S, 159-55E United States Navy Land-
Based Aircraft Marine Land-
Based Aircraft
Sunk
  15   AZUMASAN Passenger-Cargo 7,623 9-25S, 159-55E United States Army AircraftNavy Carrier-
Based Aircraft Navy Land-
Based AircraftMarine Land-
Based Aircraft
Sunk
  17   HOLLAND MARU Cargo 5,869 32-21N, 132-04E United States Submarine Sunk
  18   HAKONESAN MARU Cargo 6,673 38-46N, 142-03E United States Submarine Sunk
  20   RYUNAN MARU Cargo 5,106 34-08N, 136-46E United States Submarine Sunk
  20   YAMAFUJI MARU Cargo 5,359 24-26N, 120-26E United States Submarine Sunk
  20   AFRICA MARU Cargo 9,475 24-26N, 120-26E United States Submarine Sunk
  21   CHOKO MARU Passenger-Cargo 6,783 3-30S, 150-30E United States Submarine Sunk
  21   UNKNOWN MARU Cargo 4,000e 27-03N, 122-42E United States Submarine Sunk
  21   NICHIHO MARU Cargo 6,363 27-03N, 122-42E United States Submarine Sunk
  22   HAKKAISAN MARU Converted Gunboat 3,311 3-30S, 175-15E United States Surface Craft Sunk
  23   SEIKYO MARU Converted Gunboat 2,608 33-45N, 135-25E United States Submarine Sunk
  24   KENUN MARU Cargo 4,643 41-24N, 141-50E United States Submarine Sunk
  25   KOTOBUKI MARU NO 5 Converted Net Tender 720 4-13S, 152-11E United States Army Aircraft Sunk
  26   KEIZAN MARU Cargo 2,864 50-09N, 155-37E United States Submarine Sunk
  27   UNKNOWN MARU Passenger-Cargo 4,000e 10-20N, 108-43E United States Submarine Sunk
  31   UNKNOWN MARU Cargo 3,000e 4-40S, 118-54E United States Submarine Probably sunk
        36 Vessels 176,997        

--34--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November    1 1942 BIWA MARU Cargo 3,350 3-54S, 109-13E Japan Marine Casualty Sunk
  2   YASUKAWA MARU Passenger-Cargo 6,710 8-41S, 148-27E United States Army Aircraft Sunk
  2   GIFU MARU Cargo 2;933 6-14N, 126-07E United States Submarine Sunk
  3   TEKKAI MARU Cargo 1,925 32-02N, 126-15E United States Submarine Sunk
  3   SAGAMI MARU Passenger-Cargo 7,189 7-02N, 125-33E United States Submarine Sunk
  3   CHIKUGO MARU Cargo 2,461 20-18N, 108-39E United States Submarine Sunk
  8   KEIKO MARU Converted Gunboat 2,929 6-22N, 126-03E United States Submarine Sunk
  10   UNKNOWN MARU Cargo 4,000e 7-12N, 150-47E United States Submarine Sunk
  11   KOBE MARU Transport 7,938 31-27N, 124-13E Japan Marine Casualty Sunk
  11   TENZAN MARU Cargo 3,142 31-27N, 124-13E Japan Marine Casualty Sunk
  11   HOKOKU MARU Converted Light Cruiser 10,439 20-00S, 93-00E Great
Britain Netherlands
Surface Craft Surface Craft Sunk
  11   VENICE MARU Passenger-Cargo 6,571 35-36N, 123-44E United States Submarine Sunk
  14   SHINANOGAWA MARU Cargo 7,503 8-30S, 158-45E United States Army Aircraft
Navy Carrier-Based Aircraft
Marine Land-Based Aircraft
Sunk
  14   NAKO MARU Cargo 7,145 8-30S, 158-45E United States Army Aircraft
Navy Carrier-Based Aircraft
Marine Land-Based Aircraft
Sunk
  14   NAGARA MARU Passenger-Cargo 7,148 8-30S, 158-45E United States Army Aircraft
Navy Carrier-Based Aircraft
Marine Land-Based Aircraft
Sunk
  14   SADO MARU Cargo 7,180 8-30S, 158-45E United States Army Aircraft
Navy Carrier-Based Aircraft
Marine Land-Based Aircraft
Sunk
  14   CANBERRA MARU Cargo 6,477 8-30S, 158-45E United States Army Aircraft
Navy Carrier-Based Aircraft
Marine Land-Based Aircraft
Sunk
  14   BRISBANE MARU Cargo 5,425 8-30S, 158-45E United States Army Aircraft
Navy Carrier-Based Aircraft
Marine Land-Based Aircraft
Sunk

--35--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November   14 1942 ARIZONA MARU Cargo 9,684 8-30S, 158-45E United States Army Aircraft Navy Carrier-
Based Aircraft Marine Land-
Based Aircraft
Sunk
  15   YAMAZUKI MARU Cargo 6,439 9-20S, 159-50E United States Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Sunk
  15   YAMAURA MARU Cargo 6,798 9-20S, 159-50E United States Army Aircraft
Navy Land-
Based Aircraft
Marine Carrier-
Based Aircraft
Surface Craft
Sunk
  15   KINUGAWA MARU Cargo 6,937 9-20S, 159-50E United States Army Aircraft
Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Surface Craft
Sunk
  15   HIROKAWA MARU Cargo 6,872 9-20S, 159-50E United States Army Aircraft
Navy Land-
Based Aircraft
Marine Land-
Based Aircraft
Surface Craft
Sunk
  16   BOSTON MARU Transport 5,477 6-18N, 135-20E United States Submarine Sunk
  17   OREGON MARU Converted Salvage Vessel 5,873 14-46N, 119-44E United States Submarine Sunk
  18   HAVANA MARU Passenger-Cargo 5,652 6-48S, 155-49E United States Army Aircraft Sunk
  22   KHAI DINH Cargo 5,110 20-58N, 106-40E United States Army Aircraft Sunk
  26   CHERIBON MARU Cargo 4,016 52-45N, 173-15E United States Army Aircraft Sunk
  27   RYOKUSEI MARU Cargo 1,907 23-11N, 113-14E United States Army Aircraft Sunk
  30   UNKAI MARU NO 3 Cargo 3,023 Off Japan Unknown Unknown Probably sunk
        30 Vessels 168,253        
December 4 1942 MANSEI MARU Passenger-Cargo 7,770 23-30N, 119-34E Japan Marine Casualty Sunk
  7   HINO MARU NO 3 Passenger-Cargo 4,391 23-59N, 138-43E United States Submarine Sunk
  8   HEINAN MARU Cargo 661 00-52N, 118-54E United States Submarine Sunk
  10   KAMOI MARU Cargo 5,355 4-56S, 154-58E United States Submarine Sunk
  12   GYOKUZAN MARU Cargo 1,970 40-19N, 142-27E United States Submarine* Sunk
  16   GENZAN MARU Passenger-Cargo 5,708 41-10N, 141-32E United States Submarine* Sunk
  16   SHINGO MARU Cargo 4,740 41-10N, 141-32E United States Submarine Sunk
  17   BANDOENG MARU Passenger-Cargo 4,003 4-54S, 154-17E United States Submarine Sunk
* Probable Agent

--36--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
December 20 1942 UNKNOWN MARU Cargo 4,000e 35-45N, 140-55E United States Navy Mine Sunk
  22   TEIFUKU MARU Cargo 5,198 34-52N, 139-49E United States Submarine Sunk
  24   TAMA MARU NO 2 Cargo 515 6-15S, 150-10E United States Army Aircraft Sunk
  24   AMAKASU MARU NO 1 Converted Water carrier 1,913 19-16N, 166-37E United States Submarine Sunk
  25   BANSHU MARU NO 2 Cargo 1,000 9-00S, 124-00E United States Submarine Sunk
  26   IWAMI MARU Passenger-Cargo 773 8-44S, 158-06E United States Army Aircraft Navy Land-
Based Aircraft
Sunk
  27   ITALY MARU Transport 5,859 4-15S, 152-10E United States Army Aircraft Sunk
  27   TSURUGISAN MARU Cargo 3,108 4-13S, 152-11E United States Army Aircraft Sunk
  28   CHOYO MARU Cargo 5,388 24-46N, 120-40E United States Submarine Sunk
  28   OMI MARU Passenger-Cargo 3,393 6-23N, 160-17E United States Submarine Sunk
  29   FUKKEN MARU Passenger-Cargo 2,558 20-04N, 109-18E United States Navy Mine* Sunk
  29   AZUSA MARU Cargo 540 8-39S, 158-00E United States Army Aircraft Marine Land-
Based Aircraft
Sunk
  29   HACHIAN MARU Cargo 2,733 4-45S, 113-54E United States Submarine Sunk
  30   TOMIURA MARU Passenger-Cargo 3,821 4-15S, 152-10E United States Army Aircraft Sunk
  30   URAJIO MARU Cargo 3,110 51-58N, 177-33E United States Army Aircraft Sunk
  30   UNKNOWN MARU Cargo 4,000e 00-41N, 148-52E United States Submarine Sunk
  30   HITERU MARU Cargo 5,857 00-41N, 148-52E United States Submarine Sunk
        25 Vessels 88,364        
January 1 1943 RENZAN MARU Cargo 4,999 39-11N, 141-44E United States Submarine Sunk
  5   KOTOHIRA MARU Cargo 6,101 53-00N, 173-10E United States Army Aircraft Sunk
  5   KEIFUKU MARU Cargo 5,833 4-21S, 152-17E United States Army Aircraft Sunk
  5   MONTREAL MARU Cargo 6,577 52-40N, 178-15E United States Army Aircraft Sunk
  7   NICHIRYU MARU Passenger-Cargo 5,447 6-30S, 149-00E United States Army Aircraft Sunk
  8   MYOKO MARU Cargo 4,103 6-49S, 147-04E United States Army Aircraft Sunk
  9   YOSHINOGAWA MARU Cargo 1,430 6-13S, 156-00E United States Submarine Sunk
  13   IWASHIRO MARU Cargo 3,550 9-54N, 167-07E United States Submarine Sunk
  14   SHIRAHA MARU Cargo 5,693 9-12N, 130-38E United States Submarine Sunk
  15   NICHIMEI MARU Cargo 4,704 13-30N, 98-30E United States Army Aircraft Sunk
  16   CHIFUKU MARU Passenger-Cargo 5,857 4-00S, 151-55E United States Submarine Sunk
  16   KINPOSAN MARU Cargo 3,261 2-47S, 149-10E United States Submarine Sunk
  17   UNKNOWN MARU Cargo 4,000e 34-31N, 137-48E United States Submarine Sunk
  17   HEIYO MARU Passenger-Cargo 9,815 10-13N, 151-25E United States Submarine Sunk
  18   SENSAN MARU Cargo 2,775 3-53S, 149-20E United States Army Aircraft Sunk
  18   TOKACHI MARU Cargo 1,932 6-50S, 112-12E Japan Mine Sunk
  18   TOEI MARU Tanker 10,023 6-21N, 150-23E United States Submarine Sunk
* Probable Agent

--37--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January 19 1943 MYOHO MARU Cargo 4,122 5-30S, 156-00E United States Submarine Sunk
  20   SOMEDONO MARU Passenger-Cargo 5,154 3-52N, 153-56E United States Submarine Sunk
  20   SURABAYA MARU Cargo 4,391 3-52N, 153-56E United States Submarine Sunk
  20   MEIU MARU Cargo 8,230 3-52N, 153-56E United States Submarine Sunk
  21   KENKON MARU Transport 4,575 6-12S, 155-51S United States Submarine Sunk
  21   UNKNOWN MARU Cargo 2,934e 11-25N, 109-22E United States Submarine Sunk
  22   TETSUZAN MARU Cargo 1,922 4-15S, 152-10E United States Army Aircraft Sunk
  22   UNKNOWN MARU Cargo 4,000e 3-55S, 152-07E United States Submarine Sunk
  22   HASSHU MARU Passenger-Cargo 1,873 5-40S, 120-35E United States Submarine Sunk
  26   USHIO MARU Cargo 749 13-26N, 121-16E United States Submarine Sunk
  26   TOKAI MARU Passenger-Cargo 8,358 13-27N, 144-37E United States Submarine Sunk
  26   UNKNOWN MARU Cargo 4,000e 2-37N, 139-42E United States Submarine Sunk
  26   BUYO MARU Transport 5,447 1-55N, 139-14E United States Submarine Sunk
  26   FUKUEI MARU NO 2 Cargo 1,901 1-55N, 139-14E United States Submarine Sunk
  27   SHOAN MARU Passenger-Cargo 5,624 14-15N, 153-43E United States Submarine Sunk
  29   NICHIUN MARU Cargo 2,723 6-21S, 156-04E United States Submarine Sunk
  31   TOA MARU NO 2 Cargo 6,732 7-50S, 156-50E United States Marine Land-
Based Aircraft
Sunk
        34 Vessels 158,885        
February 1 1943 FUSHIMI MARU Passenger-Cargo 10,935 34-16N, 138-17E United States Submarine Sunk
  2   KENKOKU [blank] 954 [blank] [blank] [blank] [blank]
  6   GISHO MARU Cargo 543 4-30S, 151-30E United States Army Aircraft Sunk
  8   SHOTOKU MARU Cargo 1,146 35-26N, 132-38E Japan Marine Casualty Sunk
  8   KUSUYAMA MARU Cargo 5,306 22-40N, 119-12E United States Submarine Sunk
  8   TATSUTA MARU Transport 16,975 33-45N, 140-25E United States Submarine Sunk
  12   TIEN LEE Cargo 2,184 40-00N, 143-00E Japan Mine Sunk
  14   HITACHI MARU Cargo 6,540 6-45S, 155-50E United States Navy Land-
Based Aircraft
Sunk
  14   HIROTAMA MARU Converted Gunboat 1,911 4-11S, 117-45E United States Submarine Sunk
  15   KOKOKU MARU Cargo 544 5-32S, 150-09S United States Army Aircraft Sunk
  15   SURUGA MARU Cargo 991 6-27S, 156-02E United States Submarine Sunk
  15   TATEYAMA MARU Cargo 1,990 39-18N, 142-08E United States Submarine Sunk
  16   HYUGA MARU Cargo 994 13-30N, 145-47E United States Submarine Sunk
  19   HIBARI MARU Cargo 6,550 6-45S, 155-50E United States Submarine
Navy Land-
Based Aircraft
Sunk
  19   UNKNOWN MARU Cargo 6,500e 6-45S, 155-50E United States Army Aircraft Sunk
  19   AKAGANE MARU Cargo 3,121 53-05N, 171-22E United States Surface Craft Sunk
  20   SHINKOKU MARU Passenger-Cargo 3,991 15-09N, 159-30E United States Submarine Sunk
  21   KUWAYAMA MARU Cargo 5,724 7-53S, 119-13E United States Submarine Sunk
  27   KIRIKAWA MARU Transport 3,836 7-30S, 136-40E United States Army Aircraft Navy Land-
Based Aircraft
Sunk

--38--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
February 27 1943 ASAKASAN MARU Passenger-Cargo 8,709 15-53N, 97-40E United States Army Aircraft Sunk
  28   KASHII MARU Cargo 3,218 34-39N, 138-58E Japan Marine Casualty Sunk
        21 Vessels 92,662        
March    2 1943 KYOKUSEI MARU Cargo 5,493 5-05S, 148-28E United States Army Aircraft Sunk
  2   TOEN MARU Tanker 5,232 3-29S, 117-17E United States Submarine Sunk
  3   KEIZAN MARU Cargo 2,319 38-00N, 119-00E Japan Marine Casualty Sunk
  3   KEMBU MARU Cargo 953 7-15S, 148-30E United States Army Aircraft Sunk
  3   TAIMEI MARU Cargo 2,883 7-15S, 148-30E United States
Australia
Army Aircraft
Aircraft
Sunk
  3   SHINAI MARU Cargo 3,793 7-15S, 148-30E United States
Australia
Army Aircraft
Aircraft
Sunk
  3   TEIYO MARU Cargo 6,869 7-15S, 148-30E United States
Australia
Army Aircraft
Aircraft
Sunk
  3   NOJIMA Collier 4,500e 7-15S, 148-30E United States
Australia
Army Aircraft
Aircraft
Sunk
  3   AIYO MARU Cargo 2,746 7-15S, 148-30E United States
Australia
Army Aircraft
Aircraft
Sunk
  3   OIGAWA MARU Cargo 6,493 7-15S, 148-30E United States
United States
Australia
Army Aircraft
Surface Craft
Aircraft
Sunk
  3   NICHIYU MARU Passenger-Cargo 6,817 10-22N, 145-21E United States Submarine Sunk
  4   HOKUTO MARU Cargo 2,270 42-00N, 141-00E Japan Mine* Sunk
  6   KIRIHA MARU Cargo 3,057 00-00N, 145-00E United States Submarine Sunk
  8   HISASHIMA MARU Cargo 2,742 41-16N, 142-27E United States Submarine Sunk
  10   KAIJO MARU Tanker 3,270 5-33S, 122-55E United States Army Aircraft Sunk
  12   TAIHOSAN MARU Converted Water Carrier 1,805 7-15N, 159-10E United States Submarine Sunk
- 13   KASUGA MARU NO 2 Cargo 3,967 11-40N, 92-50E Netherlands Submarine Sunk
  13   MOMOYAMA MARU Cargo 5,217 2-45S, 143-20E United States Army Aircraft Sunk
  13   KOSEI MARU Cargo 3,262 29-04N, 129-17E United States Submarine Sunk
  15   MOMOHA MARU Cargo 3,103 00-00N, 145-00E United States Submarine Sunk
  19   TAKACHIHO MARU Transport 8,154 26-00N, 122-18E United States Submarine Sunk
  19   ZOGEN MARU Cargo 1,428 38-29N, 122-19E United States Submarine Sunk
  19   KOWA MARU Transport 3,217 38-27N, 122-18E United States Submarine Sunk
  21   NITTSU MARU Cargo 2,183 38-05N, 124-33E United States Submarine Sunk
* Probable Agent

--39--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
March    21 1943 HOZAN MARU Cargo 2,260 38-11N, 124-33E United States Submarine Sunk
  22   MEIGEN MARU Cargo 5,434 6-31S, 112-47E United States Submarine Sunk
  23   UNKNOWN MARU Cargo 2,427e 38-37N, 121-01E United States Submarine Sunk
  23   KENYO MARU Cargo 6,486 17-16N, 144-56E United States Submarine Sunk
  24   TAKAOSAN MARU Cargo 2,076 39-01N, 122-25E United States Submarine Sunk
  25   SATSUKI MARU Cargo 827 38-10N, 123-26E United States Submarine Sunk
  25   UNKNOWN MARU Cargo 2,556e 38-13N, 123-24E United States Submarine Sunk
  28   FUNAKAWA MARU Tanker 868 41-22N, 141-22E Japan Marine Casualty Sunk
  28   SUWA MARU Transport 10,672 19-13N, 166-34E United States Submarine Sunk
  29   TOHO MARU Tanker 9,997 00-00N, 118-18E United States Submarine Sunk
  29   YAMABATO MARU Cargo 2,556 30-26N, 129-41E United States Submarine Sunk
  30   KUROHIME MARU Cargo 4,697 00-22S, 147-46E United States Submarine Sunk
  31   NANSHIN MARU Cargo 4,911 34-13N, 133-06E Japan Marine Casualty Sunk
        37 Vessels 147,540        
April           2 1943 FLORIDA MARU Passenger-Cargo 5,854 2-40S, 150-40E United States Army Aircraft Sunk
  2   TOYO MARU NO 2 Cargo 4,163 7-23N, 149-13E United States Submarine Sunk
  3   ARIMA MARU Passenger-Cargo 7,389 10-26N, 135-00E United States Submarine Sunk
  4   KOA MARU Cargo 2,024 13-11N, 161-57E United States Submarine Sunk
  7   KOSEI MARU Passenger-Cargo 8,237 8-50N, 147-06E United States Submarine Sunk
  7   FUKUEI MARU Cargo 1,113 41-00N, 142-00E United States Submarine* Sunk
  8   TOYO MARU Cargo 1,916 10-26N, 135-00E United States Submarine Sunk
  9   OYAMA MARU Cargo 3,809 00-32N, 150-05E United States Submarine Sunk
  9   SHANGHAI MARU Cargo 4,103 13-11N, 121-45E United States Submarine Sunk
  9   PENANG MARU Cargo 5,214 5-29S, 123-02E United States Submarine Sunk
  12   SAPPORO MARU NO 12 Cargo 2,865 41-23N, 141-30E United States Submarine Sunk
  14   INDIA MARU Cargo 5,872 3-25S, 143-40E United States Army Aircraft Sunk
  14   SYDNEY MARU Passenger-Cargo 4,105 4-10S, 144-55E United States Army Aircraft Sunk
  15   KAIHEI MARU Cargo 4,575 21-06N, 151-45E United States Submarine Sunk
  17   TRAN NINH Cargo 1,463 10-30N, 107-00E Japan Marine Casualty Sunk
  17   NISSHIN MARU NO 2 Tanker 17,579 Off Formosa Unknown Unknown Sunk
  17   AMAHO MARU Cargo 2,769 42-04N, 143-22E United States Submarine Sunk
  17   TATSUNAN MARU Cargo 6,417 6-50S, 155-45E United States Navy Mine Sunk
  18   NISSHUN MARU Cargo 6,380 1-55N, 148-24E United States Submarine Sunk
  20   SUMERUSAN MARU Passenger-Cargo 1,871 6-51S, 112-45E Japan Marine Casualty Sunk
  20   KOSEI MARU Cargo 864 3-30S, 143-30S United States Army Aircraft Sunk
  20   MEIJI MARU NO 1 Converted Gunboat 1,934 37-10N, 141-25E United States Submarine Sunk
  22   YAMAZATO MARU Passenger-Cargo 6,925 3-28N, 99-47E Netherlands Submarine Sunk
  24   KASUGA MARU Cargo 1,377 41-43N, 141-21E United States Submarine Sunk
* Probable Agent

--40--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
April           27 1943 YUZAN MARU Passenger-Cargo 6,380 33-08N, 143-03E United States Submarine Sunk
  28   KAMAKURA MARU Transport 17,526 10-18N, 121-44E United States Submarine Sunk
        26 Vessels 132,724        
May         1 1943 KEISHIN MARU Converted Gunboat 1,434 37-04N, 141-06E United States Submarine Sunk
  2   TAMON MARU Cargo 8,156 27-18N, 121-38E United States Submarine Sunk
  4   SAN CLEMENTE MARU Tanker 7,354 6-54N, 134-55E United States Submarine Sunk
  5   HAKKAI MARU Cargo 2,921 34-11N, 137-41E United States Submarine Sunk
  5   KINKO MARU Cargo 1,268 38-39N, 122-36E United States Submarine Sunk
  5   DAIFUKU MARU Cargo 3,194 38-39N, 122-36E United States Submarine Sunk
  7   TAMON MARU NO 5 Passenger-Cargo 5,260 40-05N, 141-53E United States Submarine Sunk
  7   TOSEI MARU Cargo 4,363 36-05N, 123-21E United States Submarine Sunk
  8   TOMIOKA MARU Cargo 970 5-12S, 145-50E United States Army Aircraft Sunk
  8   SUMIDA MARU Cargo 546 5-12S, 145-50E United States Army Aircraft Sunk
  9   ASO MARU Cargo 703 9-09N, 122-50E United States Submarine Sunk
  9   TAKAO MARU Passenger-Cargo 3,204 38-57N, 141-49E United States Submarine Sunk
  9   JINMU MARU Cargo 1,912 38-57N, 141-49E United States Submarine Sunk
  10   TATSUTAKE MARU Passenger-Cargo 7,068 14-29N, 149-002 United States Submarine Sunk
  10   KINAI MARU Passenger-Cargo 8,360 14-29N, 149-00E United States Submarine Sunk
  11   YODOGAWA MARU Cargo 6,441 00-47S, 149-02E United States Submarine Sunk
  12   SUMATRA MARU Cargo 5,862 12-43N, 124-08E United States Submarine* Sunk
  14   HOUN MARU Cargo 1,917 6-47S, 155-51E United States Marine Land-Based Aircraft Sunk
  15   MEIKAI MARU Passenger-Cargo 3,197 13-07N, 121-49E United States Submarine Sunk
  15   INDUS MARU Passenger-Cargo 4,361 13-07N, 121-49E United States Submarine Sunk
  17   WOOSUNG MARU Cargo 3,090 35-00N, 140-00E Japan Marine Casualty Sunk
  17   ENGLAND MARU Cargo 5,830 1-00S, 148-40E United States Submarine Sunk
  18   TERUSHIMA MARU Converted Gunboat 3,110 8-45N, 170-30E United States Submarine Probably sunk
  20   BANGKOK MARU Converted Light Cruiser 5,350 5-47N, 169-42E United States Submarine Sunk
  26   TAINAN MARU Cargo 1,989 37-03N, 141-09E United States Submarine Sunk
  26   KAGI MARU Transport 2,343 28-45N, 129-37E United States Submarine Sunk
  26   SHOEI MARU Cargo 3,580 14-17N, 144-53E United States Submarine Sunk
  27   KOCHI MARU Cargo 2,910 8-41N, 134-02E United States Submarine Sunk
  28   KAMIKAWA MARU Converted Seaplane Tender 6,853 1-36S, 150-24E United States Submarine Sunk
  28   SEIKI MARU Cargo 1,036 50-38N, 155-15E United States Submarine Sunk
  28   AKATSUKI MARU Tanker 10,216 27-32N, 126-08E United States Submarine Sunk
  29   EISHO MARU Cargo 2,486 17-35N, 110-45E United States Submarine Sunk
  30   TAKAMISAN MARU Cargo 1,992 30-07N, 124-32E United States Submarine Sunk
  30   SHOKO MARU Cargo 5,335 30-07N, 124-32E United States Submarine Sunk
        34Vessels 134,661        
* Probable Agent

--41--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
June         1 1943 NOBORIKAWA MARU Cargo 2,182 35-02N, 140-14E United States Submarine Sunk
  5   SHINTOKU MARU Cargo 780 6-50S, 155-45S United States Navy Carrier-
Based Aircraft
Sunk
  6   SHINEI MARU Cargo 973 7-00N, 123-37E United States Submarine Sunk
  8   KAHOKU MARU Converted Gunboat 3,350 9-07N, 134-31E United States Submarine Sunk
  11   GENOA MARU Cargo 6,785 7-36N, 134-17E United States Submarine Sunk
  11   JINBU MARU Cargo 5,228 50-23N, 155-36E United States Submarine Sunk
  11   HIDE MARU Cargo 5,256 2-47N, 152-00E United States Submarine Sunk
  11   SEINAN MARU Cargo 1,338 41-00N, 141-30E United States Submarine* Sunk
  13   KONAN MARU Passenger-Cargo 5,226 6-05N, 138-25E United States Submarine Sunk
  13   SUZUYA MARU Cargo 901 3-08S, 151-24E United States Submarine Sunk
  15   KOYO MARU Cargo 6,435 33-55N, 127-38E United States Submarine Sunk
  15   SHINJU MARU Cargo 3,617 39-13N, 142-00E United States Submarine Sunk
  15   SANRAKU MARU Tanker 3,000 5-09N, 119-38E United States Submarine Sunk
  17   MYOKO MARU Passenger-Cargo 5,087 2-03S, 153-44E United States Submarine* Sunk
  19   TOKIWA MARU Cargo 6,971 32-31N, 126-19E United States Submarine Sunk
  19   MIYADONO MARU Passenger-Cargo 5,196 1-38N, 148-14E United States Submarine Sunk
  20   SHOJIN MARU Cargo 4,739 24-39N, 118-52E United States Submarine Sunk
  20   MEITEN MARU Cargo 4,474 15-57N, 140-55E United States Submarine Sunk
  21   HONGKONG MARU Transport 2,797 Off Formosa Unknown Unknown Sunk
  23   SAGARA MARU Converted Seaplane Tender 7,189 33-45N, 138-10E United States Submarine Sunk
  25   IBURI MARU Passenger-Cargo 3,291 39-34N, 142-06E United States Submarine Sunk
  26   SHINRYU MARU Passenger-Cargo 4,936 48-06N, 153-15E United States Submarine* Sunk
  26   TOYO MARU Passenger-Cargo 4,163 33-22N, 138-56E United States Submarine Sunk
  26   SHOZAN MARU Cargo 5,859 33-22N, 138-56E United States Submarine Sunk
  28   SHOTOKU MARU Converted Gunboat 1,964 14-10N, 145-03E United States Submarine Sunk
  29   MIKAGE MARU NO 8 Cargo 3,371 45-04N, 142-03E Japan Marine Casualty Sunk
        26 Vessels 105,108        
July      1 1943 YONEYAMA MARU Passenger-Cargo 5,274 00-20N, 119-32E United States Submarine Sunk
  2   KASHI MARU Cargo 654 8-06S, 157-20E United States Army Aircraft Sunk
  2   CANTON MARU Cargo 2,820 25-07N, 119-18E United States Submarine Sunk
  2   BANSHU MARU NO 7 Cargo 5,430 52-30N, 156-12E United States Submarine Sunk
  2   ISUZU MARU Cargo 2,866 13-36N, 121-49E United States Submarine Sunk
  3   ANZAN MARU Cargo 3,890 38-08N, 124-20E United States Submarine Sunk
  3   KOKURYU MARU Passenger-Cargo 6,112 38-08N, 124-20E United States Submarine Sunk
  4   NIKKYU MARU Cargo 6,529 34-31N, 138-35E United States Submarine Sunk
  4   KOKI MARU Cargo 5,290 28-40N, 124-10E United States Submarine Sunk
  4   LIVERPOOL MARU Cargo 5,865 28-40N, 124-10E United States Submarine Sunk
  6   BANSHU MARU NO 33 Cargo 737 43-35N, 140-21E United States Submarine Sunk
* Probable Agent

--42--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
July      7 1943 SHOWA MARU Passenger-Cargo 2,212 43-14N, 139-53E United States Submarine Sunk
  11   TAIKO MARU Cargo 1,925 12-53N, 131-49E United States Submarine Sunk
  12   TAIRYO MARU Cargo 1,423 20-52N, 106-41E United States Army Aircraft Sunk
  12   CHIKUZAN MARU Cargo 1,840 20-52N, 106-41E United States Army Aircraft Sunk
  12   NIITAKA MARU Passenger-Cargo 2,478 43-02N, 140-00E United States Submarine Sunk
  15   URADO MARU Passenger-Cargo 1,336 33-59N, 132-44E Japan Marine Casualty Sunk
  17   FUZAN MARU Cargo 1,972 46-57N, 141-42E Japan Marine Casualty Sunk
  19   MIKAGE MARU NO 20 Passenger-Cargo 2,718 18-34N, 166-20E United States Submarine Sunk
  21   SAIPAN MARU Transport 5,533 16-18N, 134-09E United States Submarine Sunk
  24   MIE MARU Cargo 2,913 2-45S, 133-40E Australia Mine Sunk
  25   THAMES MARU Cargo 5,871 2-40N, 148-26E United States Submarine Sunk
  27   TEIKIN MARU Cargo 1,972 19-57N, 109-05E United States Navy Mine* Sunk
  28   TAMISHIMA MARU Cargo 1,931 13-52N, 97-50E United States Army Aircraft Sunk
  30   RYUZAN MARU Cargo 4,720 6-31S, 111-26E United States Submarine Sunk
        25 Vessels 84,361        
August 1 1943 MOGAMIGAWA MARU Aircraft Ferry 7,497 11-16N, 153-34E United States Submarine Sunk
  3   KAISHO MARU Passenger-Cargo 6,070 5-18S, 111-52E United States Submarine Sunk
  5   SHOJU MARU Passenger-Cargo 2,022 24-37N, 152-45E United States Submarine Sunk
  8   TANGSHAN MARU Cargo 2,103 42-00N, 142-00E Japan Marine Casualty Sunk
  8   NARUTO MARU Aircraft Ferry 7,149 24-12N, 142-51E United States Submarine Sunk
  9   SEKKO MARU Passenger-Cargo 3,183 24-51N, 122-12E United States Submarine Sunk
  10   WAKANOURA MARU Passenger-Cargo 2,411 46-58N, 143-30E United States Submarine Sunk
  13   EDO MARU Converted Gunboat 1,299 23-24N, 142-26E United States Submarine Sunk
  20   CHOSA MARU Converted Gunboat 2,538 5-09N, 100-10E Netherlands Submarine Sunk
  20   NIKKYO MARU Cargo 5,484 34-14N, 136-39E Japan Marine Casualty Sunk
  20   SEITAI MARU Cargo 3,404 42-15N, 139-53E United States Submarine Sunk
  20   SEIZAN MARU Cargo 955 00-58N, 119-01E United States Submarine Sunk
  22   GLASGOW MARU Cargo 5,831 Indian Ocean Unknown Unknown Sunk
  22   RYOKAI MARU Cargo 4,655 42-40N, 139-48E United States Submarine Sunk
  22   KAISHO MARU Passenger-Cargo 4,164 10-09N, 147-25E United States Submarine Sunk
  22   NISHIYAMA MARU Cargo 3,016 2-40N, 137-10E United States Submarine Sunk
  23   HEITO MARU Cargo 4,468 9-10N, 92-50E United States Army Aircraft Sunk
  23   ATAKA MARU Passenger-Cargo 5,248 34-37N, 137-53E United States Submarine Sunk
  27   MEIZAN MARU Passenger-Cargo 5,480 13-13N, 121-23E United States Submarine* Sunk
  27   TAIFUKU MARU Passenger-Cargo 3,520 32-27N, 132-24E United States Submarine Sunk
  29   CHOJUN MARU Cargo 2,246 34-28N, 128-55E Japan Marine Casualty Sunk
  30   TAIBUN MARU Passenger-Cargo 6,581 41-53N, 141-10E United States Submarine Sunk
  31   SHOTO MARU Passenger-Cargo 5,254 28-27N, 123-03E United States Submarine Sunk
  31   KOKKO MARU Cargo 5,486 28-27N, 123-03E United States Submarine Sunk
        24 Vessels 100,064        
* Probable Agent

--43--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
September 1 1943 FUSEI MARU Passenger-Cargo 2,256 31-28N, 127-24E United States Submarine Sunk
  2   BUSAN MARU Cargo 1,990 42-21N, 149-59E Japan Marine Casualty Sunk
  2   HANKOW MARU Passenger-Cargo 4,105 3-35S, 143-39E United States Army Aircraft Sunk
  2   NAGATO MARU Cargo 5,901 3-35S, 143-39E United States Army Aircraft Sunk
  3   AKAMA MARU Cargo 5,600 41-00N, 141-30E United States Submarine* Sunk
  3   TAGONOURA MARU Cargo 3,521 34-10N, 140-12E United States Submarine Sunk
  4   HEIJO MARU Converted Gunboat 2,627 5-32N, 156-23E United States Submarine Sunk
  4   KOZAN MARU Passenger-Cargo 4,180 22-22N, 120-04E United States Submarine Sunk
  5   TENKAI MARU Cargo 3,203 1-10N, 142-10E United States Submarine Sunk
  6   KOFUKU MARU Cargo 3,209 38-00N, 138-25E Japan Marine Casualty* Sunk
  6   ANNAN MARU Cargo 2,941 16-46N, 96-10E United States Army Aircraft Sunk
  6   MILAN MARU Cargo 5,467 16-46N, 96-10E United States Army Aircraft Sunk
  6   SHOGEN MARU Cargo 3,362 42-13N, 142-16E United States Submarine Sunk
  8   HAKUTETSU MARU NO 13 Cargo 1,334 2-44S, 141-36E United States Submarine Sunk
  9   KOYO MARU Cargo 3,010 35-20N, 140-40E United States Submarine* Sunk
  9   KOSHIN MARU Cargo 1,358 34-21N, 127-51E Japan Marine Casualty Sunk
  11   YOKO MARU Cargo 1,050 33-50N, 139-33E United States Submarine Sunk
  11   HOKUSHO MARU Cargo 4,211 00-28S, 166-52E United States Submarine Sunk
  13   YAMATO MARU Transport 9,656 30-06N, 123-33S United States Submarine Sunk
  16   SEIKAI MARU Converted Gunboat 2,663 2-30S, 150-48E Australia Mine Sunk
  17   TAMATSU MARU Passenger-Cargo 4,646 5-23N, 100-21E Japan Marine Casualty Sunk
  18   YOWA MARU Cargo 6,435 27-31N, 126-57E United States Submarine* Sunk
  18   KANSAI MARU Passenger-Cargo 8,614 00-25N, 146-21E United States Submarine Sunk
  19   KATSURA MARU NO 2 Converted Gunboat 1,368 49-05N, 151-45E United States Submarine Sunk
  19   KACHISAN MARU Cargo 814 33-30N, 135-40E United States Submarine Sunk
  21   SHIRIYA Tanker 6,500 26-27N, 122-40E United States Submarine Sunk
  21   SHOYO MARU Tanker 7,498 26-27N, 122-40E United States Submarine Sunk
  21   ARGUN MARU Cargo 6,662 26-27N, 122-40E United States Submarine Sunk
  22   HOKUSEI MARU Cargo 1,394 Sea of Okhotsk Unknown Unknown Sunk
  22   KATSURAHAMA MARU Cargo 715 39-11N, 123-20E United States Submarine Sunk
  23   KOWA MARU Cargo 4,520 34-15N, 137-00E United States Submarine Sunk
  23   DAISHIN MARU Tanker 5,878 34-15N, 137-00E United States Submarine Sunk
  23   RYOTOKU MARU Cargo 3,483 21-17N, 142-00E United States Submarine Sunk
  23   YAMASHIRO MARU Passenger-Cargo 3,429 21-17N, 142-00E United States Submarine Sunk
  24   SHONAN MARU Cargo 521 00-27S, 147-43E United States Army Aircraft Sunk
  25   TAIKO MARU Cargo 2,958 41-30N, 139-00E United States Submarine* Sunk
  25   KIRISHIMA MARU Passenger-Cargo 8,120 9-44N, 111-56E United States Submarine Sunk
  27   TAISEI MARU Cargo 1,957 3-19S, 143-33E United States Army Aircraft Sunk
  27   HAKUSAN MARU Cargo 2,197 1-18N, 103-52E Great
Britain
Sabotage Sunk
  27   KIZAN MARU Cargo 5,077 1-18N, 103-52E Great
Britain
Sabotage Sunk
  27   KASHIMA MARU Transport 9,908 10-14N, 109-45E United States Submarine Sunk
* Probable Agent

--44--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
September 28 1943 AKASHI MARU Cargo 3,227 6-11S, 126-00E United States Submarine Sunk
  28   TAIAN MARU Passenger-Cargo 3,158 15-22N, 145-38E United States Submarine Sunk
  29   MASAKI MARU NO 2 Cargo 1,238 40-00N, 130-00E United States Submarine* Sunk
  30   MAEBASHI MARU Passenger-Cargo 7,005 6-01N, 139-08E United States Submarine Sunk
        45 Vessels 178,966        
October     1 1943 TONEI MARU Passenger-Cargo 4,930 4-01N, 143-47E United States Submarine Sunk
  1   KINKASAN MARU Cargo 4,980 4-01N, 143-47E United States Submarine Sunk
  5   KONRON MARU Transport 7,908 34-00N, 130-00E United States Submarine Sunk
  6   KAZAHAYA Tanker 8,000e 10-01N, 148-31E United States Submarine Sunk
  6   KANKO MARU Passenger-Cargo 1,288 37-18N, 129-33E United States Submarine* Sunk
  6   SHINYU MARU Cargo 529 3-35S, 143-36E United States Army Aircraft Sunk
  7   KIKUKAWA MARU Passenger-Cargo 3,833 7-22N, 151-54E Japan Marine Casualty Sunk
  8   TAIAN MARU Cargo 5,655 18-24N, 119-09E United States Submarine Sunk
  8   DAINICHI MARU Passenger-Cargo 5,813 18-24N, 119-09E United States Submarine Sunk
  8   KASHU MARU Cargo 5,460 00-25S, 146-22E United States Submarine Sunk
  9   KANKO MARU Cargo 2,995 37-18N, 129-33E United States Submarine* Sunk
  9   KOGANE MARU Passenger-Cargo 3,132 3-36S, 127-44E United States Submarine Sunk
  10   HINO MARU NO 5 Cargo 2,725 5-35S, 154-25E United States Army Aircraft Sunk
  10   TEIBI MARU Transport 10,086 14-44N, 110-19E United States Submarine Sunk
  10   ISUZUGAWA MARU Cargo 4,212 14-44N, 110-19E United States Submarine Sunk
  11   SANWA MARU Cargo 547 5-30S, 154-45E United States Army Aircraft Sunk
  12   KEISHO MARU Passenger-Cargo 5,879 4-13S, 152-12E United States Army Aircraft Sunk
  12   TSUKINADA MARU Passenger-Cargo 530 4-13S, 152-11E United States Army Aircraft Sunk
  13   DAIGEN MARU NO 8 Cargo 1,365 24-28N, 118-04E United States Army Aircraft Sunk
  13   KENKOKU MARU Cargo 3,127 3-47S, 127-41E United States Submarine Sunk
  14   KOZUI MARU Passenger-Cargo 7,072 27-35N, 127-27E United States Submarine Sunk
  15   CHICAGO MARU Passenger-Cargo 5,866 24-35N, 120-31E United States Submarine Sunk
  18   TAICHU MARU Cargo 1,906 34-00N, 136-24E United States Submarine Sunk
  18   TAIRIN MARU Cargo 1,915 1-00N, 143-16E United States Submarine Sunk
  20   SANA MARU Cargo 3,365 12-36N, 109-30E United States Submarine Sunk
  22   AWATA MARU Converted Light Cruiser 7,397 26-48N, 124-56E United States Submarine Sunk
  24   TENNAN MARU Cargo 5,407 2-05N, 144-39E United States Submarine Sunk
  24   KAZAN MARU Cargo 1,893 2-05N, 144-39E United States Submarine Sunk
  24   JOHORE MARU Passenger-Cargo 6,182 2-05N, 144-39E United States Submarine Sunk
  26   DOVER MARU Cargo 3,212 16-16N, 96-18E United States Army Aircraft Sunk
  26   HOKUZAN MARU Cargo 1,329 20-05N, 110-25E United States Army Aircraft Sunk
  26   YAMATOGAWA MARU Cargo 776 20-05N, 110-25E United States Army Aircraft Sunk
  26   SHOZAN MARU Cargo 2,937 20-52N, 106-40E United States Army Mine Sunk
  27   FUJI MARU Transport 9,138 28-25N, 128-04E United States Submarine Sunk
  27   NANMAN MARU Cargo 6,550 12-34N, 134-48E United States Submarine Sunk
* Probable Agent

--45--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
October     29 1943 WUHU MARU Cargo 3,222 22-30N, 115-25E United States Submarine Sunk
  30   SHINYO MARU NO 2 Cargo 1,085 41-52N, 140-07E Japan Marine Casualty Sunk
  30   SHANGHAI MARU Transport 5,258 32-00N, 125-00E Japan Marine Casualty Sunk
  31   KORYO MARU Tanker 589 1-25N, 120-46E United States Submarine Sunk
        39 Vessels 158,093        
November   2   CHIHAYA MARU Cargo 7,089 28-37N, 134-47E United States Submarine* Sunk
  2   UME MARU Passenger-Cargo 5,859 28-37N, 134-45E United States Submarine* Sunk
  2   YAWATA MARU Cargo 1,852 28-49N, 134-50E United States Submarine* Sunk
  2   DELAGOA MARU Passenger-Cargo 7,148 28-55N, 134-43E United States Submarine* Sunk
  2   MANKO MARU Cargo 1,503 4-15S, 152-10E United States Army Aircraft Sunk
  2   SHINKO MARU Cargo 3,119 4-13S, 152-11E United States Army Aircraft Sunk
  2   EHIME MARU Cargo 4,653 28-18N, 134-48E United States Submarine Sunk
  3   MINATO MARU Cargo 664 00-43N, 169-10E United States Navy Land-Based Aircraft Sunk
  4   CHINKO MARU Passenger-Cargo 3,222 23-20N, 116-45E United States Army Aircraft Sunk
  4   RYUOSAN MARU Cargo 2,455 2-40S, 150-40E Australia Mine Sunk
  4   KAIFUKU MARU Passenger-Cargo 3,177 21-22N, 113-20E United States Submarine Sunk
  6   ASAYAMA MARU Converted Water Carrier 1,917 5-44S, 154-45E United States Army Aircraft Sunk
  6   UJIGAWA MARU Cargo 782 5-16N, 154-33E United States Army Aircraft Sunk
  7   INUSHIMA MARU NO 6 Cargo 586 24-28N, 118-04E United States Army Aircraft Sunk
  7   NAGATA MARU Cargo 670 24-28N, 118-04E United States Army Aircraft Sunk
  8   KYOKUEI MARU Tanker 10,570 16-44N, 116-22E United States Submarine Sunk
  8   TANGO MARU Tanker 2,046 00-22N, 119-44E United States Submarine Sunk
  9   TAGA MARU Cargo 2,868 21-38N, 131-19E United States Submarine Sunk
  10   KISOGAWA MARU Converted Water Carrier 1,914 6-12N, 99-25E Great
Britain
Submarine Sunk
  10   GIYU MARU Cargo 877 5-30S, 154-45E United States Army Aircraft Sunk
  10   TOKYO MARU Passenger-Cargo 6,486 3-36N, 150-34E United States Submarine Sunk
  11   KUNITAMA MARU Cargo 3,127 3-08S, 127-38E United States Submarine Sunk
  11   KOSEI MARU Passenger-Cargo 3,551 27-36N, 130-32E United States Submarine Sunk
  13   KYOKUYO MARU Tanker 17,548 East China Sea Unknown Unknown Sunk
  13   TANGO MARU Passenger-Cargo 6,893 East China Sea Unknown Unknown Sunk
  13   NACHISAN MARU Passenger-Cargo 4,433 32-57N, 125-06E United States Submarine Sunk
  13   MUKO MARU Transport 4,862 8-57N, 152-36E United States Submarine Sunk
  15   KYOKKO MARU Passenger-Cargo 6,783 14-53N, 119-54E United States Submarine Sunk
  16   KYORITSU MARU NO 2 Cargo 830 3-25S, 145-30E United States Army Aircraft Sunk
  16   TETSUWA MARU Cargo 1,951 23-42N, 117-35E United States Army Aircraft Sunk
  17   HIE MARU Converted Submarine Tender 11,621 1-48N, 148-24E United States Submarine Sunk
  19   DAIGEN MARU Cargo 1,517 19-54N, 110-10E United States Army Aircraft Probably sunk
  19   UDO MARU Cargo 3,936 22-27N, 147-15E United States Submarine Sunk
* Probable Agent

--46--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November   19 1943 HOKKO MARU Cargo 5,385 22-27N, 147-15E United States Submarine Sunk
  20   NAPLES MARU Cargo 5,824 3-22S, 151-45E United States Navy Land-Based Aircraft Sunk
  20   NIKKO MARU Cargo 5,949 22-47N, 147-20E United States Submarine Sunk
  21   EIZAN MARU Cargo 1,681 36-40N, 125-31E United States Submarine* Sunk
  21   TAIKO MARU Cargo 1,812 21-17N, 136-30E Japan Marine Casualty Sunk
  21   NICHII MARU Cargo 6,550 2-00S, 149-15E United States Army Aircraft Sunk
  21   SHINWA MARU Cargo 3,328 2-24S, 134-36E United States Army Aircraft Sunk
  22   KANAYAMASAN MARU Cargo 2,869 1-00N, 149-00E United States Army Aircraft Sunk
  22   YAMATO MARU Cargo 4,379 7-09N, 134-34E United States Submarine Sunk
  22   DAISHU MARU Cargo 3,322 33-36N, 128-35E United States Submarine Sunk
  22   KISO MARU Cargo 4,071 7-09N, 134-34E United States Submarine Sunk
  23   KIZAN MARU Cargo 2,841 1-50N, 127-55E United States Army Aircraft Sunk
  23   NEKKA MARU Transport 6,784 28-49N, 122-11E United States Submarine Sunk
  25   KENZAN MARU Cargo 4,705 00-51N, 145-56E United States Submarine Sunk
  25   TOA MARU Tanker 10,052 8-20N, 158-00E United States Submarine Sunk
  26   OGURASAN MARU Tanker 5,069 12-48N, 109-34E United States Submarine Sunk
  26   TAINAN MARU Cargo 5,407 13-02N, 109-28E United States Submarine Sunk
  26   ONOE MARU Cargo 6,667 00-40N, 148-14E United States Submarine Sunk
  26   NIKKAI MARU Converted Gunboat 2,562 4-00N, 147-50E United States Submarine Sunk
  26   UNKNOWN MARU Cargo 4,000e 33-36N, 128-57E United States Submarine Sunk
  26   SHINI MARU Cargo 3,811 6-56N, 134-38E United States Submarine Sunk
  27   BERYL Cargo 671 South China Sea Unknown Unknown Sunk
  27   BUENOS AIRES MARU Cargo 9,625 2-44S, 149-15E United States Unknown Aircraft Sunk
  27   HAKONE MARU Passenger-Cargo 10,420 25-20N, 120-00E United States Army Aircraft Sunk
  27   VAN VOLLENHOVEN Cargo 691 13-01N, 109-30E United States Submarine Sunk
  27   SAN RAMON MARU Tanker 7,309 33-38N, 129-05E United States Submarine Sunk
  28   SYDNEY MARU Passenger-Cargo 5,425 12-46N, 109-42E United States Submarine Sunk
  28   TONAN MARU Tanker 9,866 12-46N, 109-42E United States Submarine Sunk
  28   HOKKO MARU Cargo 5,347 1-40N, 141-45E United States Submarine Sunk
  28   YURI MARU Cargo 6,787 1-40N, 141-45E United States Submarine Sunk
  29   SUEZ MARU Cargo 4,646 6-22S, 116-35E United States Submarine Sunk
  29   KENRYU MARU Cargo 4,575 33-19N, 139-34E United States Submarine Sunk
  29   MANJU MARU Cargo 5,877 18-23N, 140-18E United States Submarine Sunk
  29   YAMAFUKU MARU Passenger-Cargo 4,928 18-37N, 139-45E United States Submarine Sunk
  29   SHIGANOURA MARU Cargo 3,512 18-38N, 139-35E United States Submarine Sunk
  30   COLUMBIA MARU Passenger-Cargo 5,618 1-56N, 147-23E United States Submarine Sunk
  30   SHOKO MARU Cargo 1,933 14-31N, 140-18E United States Submarine Sunk
        70 Vessels 320,807        
* Probable Agent

--47--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
December 1 1943 TEIREN MARU Passenger-Cargo 3,044 22-13N, 114-05E United States Army Aircraft Sunk
  1   NICHIRYO MARU Passenger-Cargo 2,721 1-31N, 120-51E United States Submarine Sunk
  1   KONEI MARU Cargo 2,345 1-02N, 146-42E United States Submarine Sunk
  2   HITORA MARU Cargo 3,513 OFF JAPAN Unknown Unknown Sunk
  2   HIMALAYA MARU Passenger-Cargo 5,228 00-52S, 148-50E United States Army Aircraft Sunk
  3   ASSAM Cargo 1,668 18-51N, 95-17E United States Army Aircraft Sunk
  3   AZUMA MARU Passenger-Cargo 6,646 6-29N, 131-28E United States Submarine Sunk
  4   HIYOSHI MARU Passenger-Cargo 4,046 29-45N, 145-55E United States Submarine Sunk
  4   DAIDO MARU Converted Gunboat 2,962 8-15N, 159-06E United States Submarine Sunk
  5   ASAKAZE MARU Passenger-Cargo 6,517 9-19N, 167-25E United States Navy Carrier-
Based Aircraft
Sunk
  5   CHOKO MARU Cargo 3,515 9-19N, 167-25E United States Navy Carrier-
Based Aircraft
Sunk
  5   TATEBU MARU Cargo 6,816 9-19N, 167-25E United States Navy Carrier-
Based Aircraft
Sunk
  5   TATEYAMA MARU Converted Water Carrier 3,787 9-19N, 167-25E United States Navy Carrier-
Based Aircraft
Sunk
  5   HIMENO MARU Cargo 834 9-10N, 124-30E United States Submarine Sunk
  7   OTORI MARU Cargo 2,559 38-43N, 125-24E Japan Marine Casualty Sunk
  7   SOYO MARU Converted Submarine Tender 6,081 14-04N, 152-09E United States Submarine Sunk
  8   SANSEI MARU Passenger-Cargo 3,267 25-20N, 141-46E United States Submarine Sunk
  9   HIGARI MARU Cargo 878 38-44N, 125-24E Japan Marine Casualty Sunk
  12   TOSEI MARU Cargo 5,484 2-44N, 126-14E United States Submarine Sunk
  13   TOKIWA MARU Cargo 1,203 3-30S, 151-30E United States Navy Land-Based Aircraft Sunk
  13   FUKKAI MARU Passenger-Cargo 3,829 7-07N, 134-31E United States Submarine Sunk
  13   TOTAI MARU Cargo 3,195 30-55N, 132-33E United States Submarine Sunk
  14   HAKOZAKI MARU Passenger-Cargo 3,948 33-10N, 125-55E United States Submarine Sunk
  16   WAKATSU MARU Cargo 5,123 8-26S, 126-48E Netherlands Aircraft Sunk
  16   GENMEI MARU Cargo 3,180 8-26S, 126-48E Australia Aircraft Sunk
  16   GINYO MARU Cargo 8,613 22-27N, 120-08E United States Submarine Sunk
  18   GYOKUREI MARU Cargo 5,588 26-22N, 128-20E United States Submarine Sunk
  19   KAITO MARU Cargo 2,745 3-05S, 151-15E United States Army Aircraft Sunk
  19   ALASKA MARU Cargo 7,378 2-37S, 150-52E United States Navy Carrier-
Based Aircraft
Sunk
  20   SHOEI MARU Cargo 3,083 8-42N, 167-44E United States Navy Land-Based Aircraft Sunk
  20   TSUNESHIMA MARU Cargo 2,926 1-30N, 148-36E United States Submarine Sunk
  21   UYO MARU Cargo 6,376 32-38N, 132-04E United States Submarine Sunk
  21   TERUKAWA MARU Cargo 6,429 9-50N, 151-55E United States Submarine Sunk
  21   KONAN MARU Cargo 2,627 30-24N, 129-53E United States Submarine Sunk
  21   KASHIWA MARU Converted Net Tender   515 30-24N, 129-53E United States Submarine Sunk
  22   GINREI MARU Passenger-Cargo 5,949 20-12N, 113-42E China Aircraft Sunk
  23   NANKAI MARU NO 2 Cargo 1,960 6-05N, 171-43E United States Army Aircraft Navy Land-
Based Aircraft
Sunk

--48--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
December 24 1943 SEIZAN MARU NO 2 Cargo 1,898 34-02N, 136-19E United States Submarine Sunk
  24   TOFUKU MARU Cargo 5,857 33-58N, 136-16E United States Submarine Sunk
  24   HEIWA MARU Cargo 5,578 2-45N, 127-41E United States Submarine Sunk
  25   TENRYU MARU Cargo 4,861 2-36S, 150-49E United States Navy Carrier Based Aircraft Sunk
  27   KYUEI MARU Tanker 10,171 21-42N, 118-05E United States Submarine Sunk
  27   KYOKO MARU Tanker 5,792 5-00S, 121-22E United States Submarine Sunk
  28   HEIZAN MARU Passenger-Cargo 1,061 30-31N, 117-02E United States Army Aircraft Sunk
  28   UNYO MARU Passenger-Cargo 1,037 30-31N, 117-02E United States Army Aircraft Sunk
  29   BICHU MARU Cargo 4,667 Off New Guinea Unknown Unknown Sunk  
  29   DAITEI MARU Passenger-Cargo 2,421 30-31N, 117-02E United States Army Aircraft Sunk
  29   KAKUZAN MARU Cargo 2,938 30-31N, 117-02E United States Army Aircraft Sunk
  29   TENPOSAN MARU Cargo 1,970 8-00N, 133-51E United States Submarine Sunk
  29   SHICHISEI MARU Cargo 1,911 8-03N, 134-04E United States Submarine Sunk
  29   RYUTO MARU Cargo 3,311 8-00N, 133-51E United States Submarine Sunk
  30   ICHIYU MARU Tanker 5,061 2-45S, 109-10E United States Submarine Sunk
  31   SHOHO MARU Cargo 1,936 5-18N, 160-16E United States Submarine Sunk
        53 Vessels 207,048        
January 1 1944 KANAIYAMA MARU Cargo 543 2-03S, 147-27E United States Navy Land-Based Aircraft Sunk
  1   RYUYO MARU Cargo 6,707 8-24N, 122-56E United States Submarine Sunk
  1   OKUYO MARU Converted Gunboat 2,904 3-51S, 128-04E United States Submarine Sunk
  1   NAGOYA MARU Aircraft Ferry 6,072 32-10N, 138-37E United States Submarine Sunk
  2   ISSHIN MARU Tanker 10,000e 29-30N, 128-50E United States Submarine Sunk
  3   SAISHU MARU Cargo 2,082 33-44N, 136-02E United States Submarine Sunk
  3   RYUEI MARU Tanker 5,144 8-06N, 112-30E United States Submarine Sunk
  3   BOKUEI MARU Tanker 5,135 6-58N, 112-02E United States Submarine Sunk
  4   HEIMEI MARU Cargo 4,364 10-10S, 123-35E United States Army Aircraft Sunk
  4   KIYO MARU Tanker 7,251 5-46N, 108-36E United States Submarine Sunk
  4   USA MARU Cargo 3,943 34-09N, 136-50E United States Submarine Sunk
  4   HAKKO MARU Tanker 6,046 7-10N, 108-25E United States Submarine Sunk
  4   TAMON MARU NO 8 Cargo 2,705 11-05N, 109-10E United States Submarine Sunk
  7   KATSURAGISAN MARU Cargo 2,427 7-30N, 151-50E Japan Mine Sunk
  7   FUSHIMI MARU NO 3 Tanker 4,292 9-27N, 117-36E United States Submarine Sunk
  10   YAMABIKO MARU Converted Salvage Vessel 6,795 31-28N, 137-44E United States Submarine Sunk
  10   GETSUYO MARU Cargo 6,440 27-22N, 127-31E United States Submarine Sunk
  10   ASUKA MARU Cargo 7,523 27-35N, 127-30E United States Submarine Sunk
  11   YAHIKO MARU Cargo 5,747 27-10N, 127-28E United States Submarine Sunk
  11   ERIE MARU Cargo 5,493 32-56N, 132-02E United States Submarine Sunk
  12   IKUTA MARU Converted Gunboat 2,969 8-42N, 167-44E United States Navy Land-Based Aircraft Sunk
  12   KANJO MARU Cargo 2,197 22-37N, 120-15E United States Army Mine Sunk

--49--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January 12 1944 NIGITSU MARU Transport 9,547 23-15N, 133-49E United States Submarine Sunk
  12   CHOKO MARU Converted Gunboat 2,629 3-30N, 147-27E United States Submarine Sunk
  13   HAGURO MARU Cargo 3,352 2-43S, 149-25E United States Array Aircraft Sunk
  14   GYOEI MARU Cargo 2,790 20-35N, 113-44E United States Army Aircraft Sunk
  14   NIPPON MARU Tanker 9,975 5-02N, 140-43E United States Submarine Sunk
  14   YAMATSURU MARU Cargo 3,651 28-30N, 133-40E United States Submarine Sunk
  14   KENYO MARU Tanker 10,022 5-22N, 141-27E United States Submarine Sunk
  14   YAMAKUNI MARU Passenger-Cargo 6,921 33-16N, 139-30E United States Submarine Sunk
  15   RYUKO MARU Passenger-Cargo 2,962 10-00N, 93-00E Great
Britain
Submarine Sunk
  15   TATSUNO MARU Cargo 6,960 19-45N, 120-40E United States Submarine Sunk
  15   TOHO MARU Cargo 4,092 19-45N, 120-40E United States Submarine Sunk
  16   HARUNA MARU Cargo 1,549 5-00N, 130-00E Japan Marine Casualty Sunk
  16   MEISHO MARU Cargo 2,735 2-20S, 149-42E United States Army Aircraft Navy Land-Based Aircraft Sunk
  16   HOZUGAWA MARU Cargo 1,925 2-20S, 149-42E United States Navy Land-Based Aircraft Sunk
  16   SHUNKO MARU Cargo 4,027 2-30S, 149-42E United States Navy Land-Based Aircraft Sunk
  16   NIKKO MARU Cargo 734 12-49N, 150-19E United States Submarine Sunk
  16   DENMARK MARU Cargo 5,870 23-09N, 135-14E United States Submarine Sunk
  16   DELHI MARU Converted Gunboat 2,182 34-04N, 139-56E United States Submarine Sunk
  16   KAIKA MARU Cargo 2,087 4-03N, 148-41E United States Submarine Sunk
  17   CHIBURI MARU Cargo 1,943 2-27S, 148-58E United States Army Aircraft Sunk
  17   FUKEI MARU NO 9 Cargo 617 2-00S, 149-00E United States Army Aircraft Sunk
  17   HAKKAI MARU Converted Salvage Vessel 5,114 4-13S, 152-12E United States Navy Land-Based Aircraft Sunk
  17   KENSHIN MARU Cargo 3,126 4-13S, 152-12E United States Navy Land-Based Aircraft Sunk
  17   KOSEI MARU Cargo 1,920 4-13S, 152-12E United States Navy Land-Based Aircraft Sunk
  17   LYONS MARU Cargo 7,017 4-13S, 152-12E United States Navy Land-Based Aircraft Sunk
  17   TENSHIN MARU Cargo 1,500 4-13S, 152-12E United States Navy Land-Based Aircraft Sunk
  17   SHOYU MARU Cargo 4,408 00-18N, 118-37E United States Submarine Sunk
  17   TARUSHIMA MARU Cargo 4,865 22-45N, 135-00E United States Submarine Sunk
  18   YOSHIDA MARU Converted Gunboat 2,900 23-50N, 151-28E United States Submarine Sunk
  20   SANYU MARU Cargo 530 13-00N, 121-00E Japan Marine Casualty Sunk
  20   JINTSU MARU Dredge 558 3-04S, 142-10E United States Army Aircraft Sunk
  20   MENADO MARU Cargo 2,166 23-10N, 118-15E United States Army Aircraft Sunk
  20   KUZAN MARU Cargo l,000e 22-10N, 118-15E United States Army Aircraft Sunk
  20   KOYU MARU Cargo 5,325 6-40N, 134-17E United States Submarine Sunk
  20   HIDAKA MARU Cargo 5,486 31-28N, 134-52E United States Submarine Sunk
  21   YASUKUNI MARU Cargo 3,025 3-19N, 137-02E United States Submarine Sunk

--50--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January 21 1944 IKOMA MARU Passenger-Cargo 3,156 3-19N, 137-02E United States Submarine Sunk
  22   KOSHIN MARU Passenger-Cargo 5,485 7-22N, 115-05E United States Submarine Sunk
  22   SEINAN MARU Cargo 5,401 7-22N, 115-05E United States Submarine Sunk
  23   SEIKAI MARU Cargo 3,180 12-26N, 98-36E United States Army Aircraft Sunk
  23   PANAMA MARU Cargo 5,287 27-08N, 120-30E China Aircraft Sunk
  23   TAIAN MARU Cargo 3,670 5-45N, 134-45E United States Submarine Sunk
  23   MAGANE MARU Converted Gunboat 3,120 29-49N, 140-07E United States Submarine Sunk
  24   LIU HSING Cargo 1,076 26-58N, 120-04E United States Army Aircraft Sunk
  24   UNKNOWN MARU Cargo 1,000e 26-58N, 120-04E United States Army Aircraft Sunk
  24   UNKNOWN MARU Cargo 1,000e 26-58N, 120-04E United States Army Aircraft Sunk
  24   KOAN MARU Converted Water Carrier 3,462 4-13S, 152-11E United States Navy Carrier-Based Aircraft Sunk
  24   OGASHIMA MARU Cargo 1,424 8-14N, 168-02E United States Navy Land-Based Aircraft Sunk
  24   NARUTO Tanker 6,500 4-13S, 152-11E United States Navy Carrier-Based Aircraft Sunk
  24   TAISHO MARU Cargo 4,815 4-13S, 152-11E United States Navy Carrier-Based Aircraft Sunk
  24   YAMAYURI MARU Cargo 5,028 4-13S, 152-11E United States Navy Carrier-Based Aircraft Sunk
  24   CHOSEN MARU Cargo 3,110 32-25N, 133-00E United States Submarine Sunk
  24   HARAJI MARU Converted Minesweeper 500 21-33N, 112-00E United States Army Aircraft* Probably sunk
  25   NANSHIN MARU Cargo 1,391 35-31N, 133-09E Japan Marine Casualty Sunk
  26   OKITSU MARU Converted Seaplane Tender 6,666 9-22N, 157-26E United States Submarine Sunk
  26   BUSHO MARU Converted Gunboat 2,552 8-27N, 109-12E United States Submarine Sunk
  27   KASAGI MARU Converted Salvage Vessel 3,140 33-31N, 139-36E United States Submarine Sunk
  27   KIKUZUKI MARU Cargo 1,266 22-11N, 119-12E United States Submarine Sunk
  27   KOSEI MARU Cargo 2,205 22-11N, 119-12E United States Submarine Sunk
  28   NEIKAI MARU Cargo 2,827 3-45S, 150-38E United States Army Aircraft Sunk
  28   UJI MARU Converted Net Tender 872 9-20N, 167-28E United States Navy Carrier-Based Aircraft Sunk
  29   SHUNTAI MARU Cargo 2,253 27-22N, 128-29E United States Submarine Sunk
  29   SHUKO MARU Converted Net Tender 889 23-07N, 142-27E United States Submarine Sunk
  30   EIKO MARU Cargo 3,535 9-10N, 167-20E United States Surface Craft Sunk
  30   TOKIHIME MARU Cargo 741 4-10S, 144-51E United States Army Aircraft Sunk
  30   AKIBASAN MARU   Cargo 4,603 8-42N, 167-44E United States Navy Carrier-
Based Aircraft
Sunk
  30   IWATE MARU Converted Water Carrier 2,984 4-12S, 152-12E United States Navy Carrier-
Based Aircraft
Sunk
  30   KATSURA MARU Converted Net Tender 540 11-32N, 162-22E United States Navy Carrier-
Based Aircraft Navy Surface Craft
Sunk
* Probable Agent

--51--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January 30 1944 PARAN MARU Cargo 562 8-42N, 167-44E United States Navy Carrier-Based Aircraft
Navy Surface Craft
Probably sunk
  30   TOKO MARU Passenger-Cargo 2,747 6-10N, 138-14E United States Submarine Sunk
  30   TAMASHIMA MARU Passenger-Cargo 3,560 21-15N, 149-18E United States Submarine Sunk
  31   YASUKUNI MARU Converted Submarine Tender 11,933 9-21N, 147-02E United States Submarine Sunk
  31   HIRO MARU Converted Net Tender 549 15-23N, 145-35E United States Submarine Sunk
        95 Vessels 355,368        
February 1 1944 TOEI MARU Cargo 4,004 4-21N, 143-16E United States Submarine Sunk
  1   TACOMA MARU Passenger-Cargo 5,772 1-35N, 128-58E United States Submarine Sunk
  1   NANKA MARU Cargo 4,065 1-35N, 128-58E United States Submarine Sunk
  2   TOYO MARU NO 5 Cargo 2,193 33-32N, 135-58E United States Submarine Sunk
  2   TOYO MARU NO 8 Cargo 2,191 33-32N, 135-58E United States Submarine Sunk
  3   NICHIAI MARU Cargo 5,439 3-00S, 150-10E United States Army Aircraft
Navy Land-
Based Aircraft
Sunk
  3   ARIAKE MARU Cargo 5,000 29-11N, 124-45E United States Submarine Sunk
  3   GOYO MARU Tanker 8,496 29-11N, 124-45E United States Submarine Sunk
  4   GORYU MARU Converted Water Carrier 1,912 6-00N, 169-44E United States Navy Land-Based Aircraft Sunk
  5   SEIKYO MARU Passenger-Cargo 2,565 22-00N, 116-00E United States Army Aircraft Sunk
  5   LUSHAN MARU Cargo 2,531 22-00N, 116-00E United States Army Aircraft Sunk
  5   TATSUMI MARU Cargo 850 3-21S, 143-33E United States Army Aircraft Sunk
  5   SUZAN MARU Passenger-Cargo 2,539 22-00N, 116-00E United States Army Aircraft Sunk
  5   TAISHIN MARU Cargo 1,723 13-09N, 120-24E United States Submarine Sunk
  8   LIMA MARU Cargo 6,989 32-18N, 129-20E United States Submarine Sunk
  10   MALTA MARU Passenger-Cargo 5,500 23-12N, 121-30E United States Submarine Sunk
  11   SATSUMA MARU Passenger-Cargo 3,091 28-01N, 121-30E China Aircraft Sunk
  12   CHOKO MARU Converted Net Tender 889 5-45N, 99-50E Great
Britain
Submarine Sunk
  12   RONSAN MARU Passenger-Cargo 2,735 27-43N, 128-35E United States Submarine Sunk
  13   URASHIO MARU Cargo 904 41-26N, 140-06E Japan Marine Casualty Sunk
  13   YOSHINO MARU Cargo 872 3-20S, 143-00E United States Army Aircraft Sunk
  13   SHOKA MARU Cargo 1,381 18-35N, 108-30E United States Army Aircraft Sunk
  14   DOZAN MARU Cargo 1,679 37-19N, 126-29E Japan Marine Casualty Sunk
  14   NITTOKU MARU Cargo 3,591 33-48N, 128-49E United States Submarine Sunk
  14   MINRYO MARU Cargo 2,193 13-44N, 120-40E United States Submarine Sunk
  14   HOKUAN MARU Cargo 3,712 13-40N, 120-27E United States Submarine Sunk
  15   MATSU MARU Converted Net Tender 509 2-36S, 150-36E United States Army Aircraft Sunk
  15   ODATSUKI MARU Cargo 1,988 10-03N, 126-54E United States Submarine Sunk
  15   HOSHI MARU NO 2 Cargo 875 34-23N, 128-12E United States Submarine Sunk
  15   RYOKA MARU Passenger-Cargo 5,307 31-16N, 121-45E United States Army Mine Sunk
  16   SANKO MARU Tanker 5,461 2-24S, 150-06E United States Army Aircraft Sunk
  16   CHOJO MARU Transport 2,610 9-15N, 127-05E United States Submarine Sunk

--52--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
February 17 1944 KASHI MARU Converted Net Tender 540 2-24S, 150-06E United States Army Aircraft Sunk
  17   AIKOKU MARU Converted Light Cruiser 10,437 7-22N, 151-54E United States Navy Carrier-
Based Aircraft
Sunk
  17   AKAGI MARU Converted Light Cruiser 7,389 7-54N, 151-25E United States Navy Carrier-
Based Aircraft
Sunk
  17   AMAGISAN MARU Passenger-Cargo 7,620 7-18N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   FUJIKAWA MARU Aircraft Ferry 6,938 7-20N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   FUJISAN MARU Tanker 9,524 7-23N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   GOSEI MARU Cargo 1,931 7-18N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   HANAGAWA MARU Tanker 4,739 7-25N, 151-45E United States Navy Carrier-
Based Aircraft
Sunk
  17   HEIAN MARU Converted Submarine Tender 11,614 7-23N, 151-51E United States Navy Carrier-
Based Aircraft
Sunk
  17   HOKI MARU Cargo 7,112 7-22N, 151-45E United States Navy Carrier-
Based Aircraft
Sunk
  17   HOKUYO MARU Passenger-Cargo 4,216 7-18N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   HOYO MARU Tanker 8,691 7-23N, 151-50E United States Navy Carrier-
Based Aircraft
Sunk
  17   KENSHO MARU Passenger-Cargo 4,862 7-18N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   KIYOSUMI MARU Converted Light Cruiser 8,613 7-23N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   REIYO MARU Cargo 5,445 7-25N, 151-45E United States Navy Carrier-
Based Aircraft
Sunk
  17   RIO DE JANEIRO MARU Converted Submarine Tender 9,626 7-20N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   SAN FRANCISCO MARU Passenger-Cargo 5,831 7-22N, 151-54E United States Navy Carrier-
Based Aircraft
Sunk
  17   SANKISAN MARU Cargo 4,776 7-25N, 151-45E United States Navy Carrier-
Based Aircraft
Sunk
  17   SEIKO MARU Cargo 5,385 7-22N, 151-45E United States Navy Carrier-
Based Aircraft
Sunk
  17   MOMOGAWA MARU Passenger-Cargo 3,829 7-20N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   NAGANO MARU Passenger-Cargo 3,824 7-25N, 151-45E United States Navy Carrier-
Based Aircraft
Sunk
  17   NIPPO MARU Converted Water Carrier 3,763 7-18N, 151-53E United States Navy Carrier-
Based Aircraft
Sunk
  17   MATSUTAN MARU Cargo 1,999 7-23N, 151-05E United States Navy Carrier-
Based Aircraft
Sunk

--53--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
February 17 1944 TONAN MARU NO 3 Tanker 19,209 7-23N, 151-51E United States Navy Carrier-Based Aircraft Sunk
  17   UNKAI MARU NO 6 Cargo 3,220 7-25N, 151-45E United States Navy Carrier-Based Aircraft Sunk
  17   YAMAGIRI MARU Passenger-Cargo 6,438 7-23N, 151-51E United States Navy Carrier-Based Aircraft Sunk
  17   YUBAE MARU Cargo 3,217 7-18N, 151-53E United States Navy Carrier-Based Aircraft Sunk
  17   ZUIKAI MARU Cargo 2,827 7-46N, 150-27E United States Navy Carrier-Based Aircraft Sunk
  17   TATSUHA MARU Passenger-Cargo 5,784 7-46N, 150-27E United States Navy Carrier-Based Aircraft Sunk
  17   SHINKOKU MARU Tanker 10,020 7-20N, 151-40E United States Navy Carrier-Based Aircraft Sunk
  17   TAIHO MARU Cargo 2,829 7-22N, 151-54E United States Navy Carrier-Based Aircraft Sunk
  17   NICHIRO MARU Passenger-Cargo 6,534 8-50N, 135-57E United States Submarine Sunk
  17   GYOTEN MARU Cargo 6,854 8-04N, 149-28E United States Submarine Sunk
  18   GOKENZAN MARU Transport 1,649 44-01N, 141-38E Japan Marine Casualty Sunk
  18   SHINSOKU MARU Cargo 3,202 28-21N, 121-51E United States Army Aircraft Sunk
  19   KOGEN MARU Cargo 2,965 35-00N, 140-00E Japan Marine Casualty Sunk
  19   NISSHIN MARU NO 3   Cargo 2,717 41-42N, 140-32E Japan Marine Casualty Probably sunk
  19   TATSUKIKU MARU Cargo 892 2-50S, 150-42E United States Army Aircraft Sunk
  19   SHINTO MARU NO 1 Cargo 1,934 2-50S, 150-42E United States Army Aircraft Sunk
  19   TAIRYU MARU Cargo 4,994 25-25N, 121-30E United States Army Aircraft Sunk
  19   KOKUEI MARU Tanker 5,154 14-34N, 114-11E United States Submarine Sunk
  19   NANEI MARU Tanker 5,019 14-34N, 114-11E United States Submarine Sunk
  19   NICHIRIN MARU Tanker 5,162 15-45N, 115-39E United States Submarine Sunk
  19   ICHIYO MARU Tanker 5,106 15-40N, 115-48E United States Submarine Sunk
  19   TAIKEI MARU Cargo 4,739 21-48N, 119-50E United States Submarine* Sunk
  19   TOSHIN MARU Cargo 1,917 21-46N, 120-06E United States Submarine* Sunk
  20   TAIJIN MARU Cargo 5,154 24-12N, 123-20E United States Submarine Sunk
  20   MANYO MARU Cargo 3,610 24-28N, 123-31E United States Submarine Sunk
  21   DAIGEN MARU NO 6 Cargo 510 3-15N, 100-40E Great
Britain
Submarine Sunk
  21   KOKAI MARU Cargo 3,871 2-30S, 150-15E United States Army Aircraft Sunk
  21   KOWA MARU Cargo 1,106 2-30S, 150-15E United States Army Aircraft Sunk
  22   KYOSEI MARU Cargo 556 2-00S, 149-50E United States Surface Craft Sunk
  22   TEIKO MARU Transport 15,105 3-03N, 109-16E United States Submarine Sunk
  22   FUKUYAMA MARU Passenger-Cargo 3,581 14-47N, 144-50E United States Submarine Sunk
  22   TAISHO MARU Cargo 4,815 4-10S, 152-18E United States Navy Carrier-Based Aircraft Sunk
  23   GYOKO MARU Passenger-Cargo 5,342 26-13N, 127-40E Japan Marine Casualty Sunk
* Probable Agent

--54--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
February 23 1944 SEIZAN MARU Passenger-Cargo 4,232 15-00N, 145-30E United States Navy Carrier-
Based Aircraft
Sunk
  23   KIMISHIMA MARU Cargo 5,193 30-30N, 140-20E United States Submarine Sunk
  23   HOREI MARU Cargo 5,588 26-22N, 126-15E United States Submarine Sunk
  23   KOYO MARU Passenger-Cargo 5,471 28-58N, 141-15E United States Submarine Sunk
  23   SHINYUBARI MARU Cargo 5,354 15-17N, 145-03E United States Submarine Sunk
  23   KUNISHIMA MARU Cargo 4,083 15-23N, 145-02E United States Submarine Sunk
  23   YAMASHIMO MARU Cargo 6,776 14-45N, 144-32E United States Submarine Sunk
  23   OGURA MARU NO 3 Tanker 7,350 3-53N, 129-17E United States Submarine Sunk
  23   NIKKI MARU Passenger-Cargo 5,857 00-07N, 135-42E United States Submarine Sunk
  24   SHUNSAN MARU NO 2 Cargo 608 5-20N, 162-58E United States Navy Land-Based Aircraft Sunk
  24   NAMPO MARU Tanker 10,033 24-20N, 122-25E United States Submarine Sunk
  24   ECHIZEN MARU Cargo 2,424 15-16N, 143-12E United States Submarine Sunk
  25   TANGO MARU Cargo 6,200 7-46S, 115-09E United States Submarine Sunk
  25   RYUSEI MARU Passenger-Cargo 4,797 7-56S, 115-14E United States Submarine Sunk
  25   CHOKO MARU Cargo 1,794 15-50N, 144-21E United States Submarine Sunk
  25   NISSHO MARU Tanker 10,526 5-55N, 126-05E United States Submarine Sunk
  26   DAIGEN MARU NO 3 Passenger-Cargo 5,256 00-55S, 139-02E United States Submarine Sunk
  27   TAISOKU MARU Cargo 2,473 1-48N, 127-32E United States Submarine Sunk
  27   CEYLON MARU Cargo 4,905 31-50N, 127-45E United States Submarine* Sunk
  28   AKIURA MARU Passenger-Cargo 6,803 00-06N, 132-53E United States Submarine Sunk
  28   KAIKO MARU Cargo 3,548 50-02N, 155-30E United States Submarine Sunk
  28   SHOHO MARU Cargo 2,723 00-06N, 132-53E United States Submarine Sunk
  29   UCHIDE MARU Passenger-Cargo 5,275 8-57N, 132-52E United States Submarine Sunk
  29   SAKITO MARU Passenger-Cargo 7,126 22-40N, 131-50E United States Submarine Sunk
        112 Vessels 518,697        
March    2 1944 TENYO MARU NO 2 Cargo 657 50-12N, 155-45E Japan Marine Casualty Sunk
  2   SHINKYO MARU Converted Gunboat 2,672 6-25N, 148-31E United States Submarine Sunk
  3   NITTAI MARU Cargo 6,484 3-17N, 123-55E United States Submarine Sunk
  3   AKASHISAN MARU Cargo 4,541 45-52N, 149-16E United States Submarine Sunk
  4   ISEZAKI MARU Cargo 875 37-57N, 124-37E Japan Marine Casualty Sunk
  4   KAYO MARU Passenger-Cargo 4,368 1-28S, 138-40E United States Submarine Sunk
  4   OMINESAN MARU Tanker 10,536 5-32N, 109-09E United States Submarine Sunk
  6   AMERICA MARU Transport 6,070 21-50N, 143-54E United States Submarine Sunk
  8   SHOBU MARU Cargo 1,950 3-38N, 99-12E Great
Britain
Submarine Sunk
  8   JUYO MARU Cargo 5,457 13-10N, 100-50E United States Army Mine Sunk
  8   TOYOKUNI MARU Cargo 5,792 19-23N, 116-13E United States Submarine Sunk
  9   NICHIREI MARU Cargo 5,396 19-47N, 116-13E United States Submarine Sunk
  10   HASSHU MARU Cargo 2,655 2-33S, 140-43E United States Navy Land-
Based Aircraft
Sunk
* Probable Agent

--55--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
March    10 1944 TSUKIKAWA MARU Cargo 4,470 1-30S, 128-17E United States Submarine Sunk
  11   DAITOKU MARU Cargo 1,134 40-10N, 137-41E Japan Marine Casualty Sunk
  12   SHINYO MARU Cargo 700 42-00N, 142-00E Japan Marine Casualty Sunk
  12   OKINOYAMA MARU NO 3 Cargo 871 00-25S, 132-55E United States Submarine Sunk
  12   TAIJIN MARU Cargo 1,937 25-53N, 131-19E United States Submarine Sunk
  13   KOKUYO MARU Cargo 4,667 32-58N, 138-52E United States Submarine Sunk
  13   RYUA MARU Cargo 1,925 47-41N, 152-41E United States Submarine Sunk
  13   SHOJIN MARU Cargo 1,942 47-41N, 152-41E United States Submarine Sunk
  14   FUKI MARU Cargo 2,453 37-29N, 141-35E Japan Marine Casualty Sunk
  16   KOFUKU MARU Cargo 1,920 4-28N, 136-56E United States Submarine Sunk
  16   NICHIREN MARU Passenger-Cargo 5,460 42-25N, 144-55E United States Submarine Sunk
  16   ANZAN MARU Passenger-Cargo 5,493 27-41N, 128-41E United States Submarine Sunk
  18   HOKUROKU MARU Passenger-Cargo 8,359 19-22N, 116-52E United States Submarine Sunk
  19   YAKUMO MARU Cargo 3,198 2-55S, 143-40E United States Army Aircraft Sunk
  19   TAIEI MARU Cargo 3,221 2-55S, 143-40E United States Army Aircraft Sunk
  20   YAMABISHI MARU NO 2 Cargo 880 35-30N, 140-44E Japan Marine Casualty Sunk
  20   HAKUYO MARU Cargo 1,327 30-53N, 140-42E United States Submarine Sunk
  20   HOKO MARU Cargo 1,504 10-06N, 138-10E United States Submarine Sunk
  21   BRAKE Tanker 9,925 Indian Ocean Unknown Unknown Sunk
  23   HOKKO MARU Cargo 4,470 35-42N, 140-53E Japan Marine Casualty Sunk
  24   SHINKYO MARU Cargo 5,139 5-27N, 125-38E United States Submarine Sunk
  24   BENGAL MARU Cargo 5,399 5-27N, 125-38E United States Submarine Sunk
  25   KAIRYU MARU Cargo 4,373 33-48N, 130-16E Japan Marine Casualty Sunk
  27   SHINSEI MARU Cargo 575 7-44S, 130-02E Australia Aircraft Sunk
  27   NICHINAN MARU Cargo 2,750 7-31S, 115-57E United States Submarine Sunk
  27   YAMAMIZU MARU Tanker 5,174 3-52S, 109-40E United States Submarine Sunk
  28   YASUSHIMA MARU Cargo 1,911 3-38N, 100-50E Great
Britain
Submarine Sunk
  28   FUKUSEI MARU Cargo 2,219 24-25N, 131-11E United States Submarine Sunk
  30   MATSUEI MARU Cargo 1,877 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   URAKAMI MARU Converted Submarine Tender 4,317 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   TESHIO MARU Cargo 2,840 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   SHINSEI MARU NO 18 Cargo 2,711 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   UNYU MARU NO 2 Tanker 634 7-30N, 134-35E United States Navy Carrier-
Based Aircraft
Sunk
  30   SHOSEI MARU Converted Net Tender 773 7-50S, 134-30E United States Navy Land-
Based Aircraft
Sunk
  30   AKEBONO MARU Tanker 10,182 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   AMATSU MARU Tanker 10,567 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk

--56--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
March    30 1944 ASASHIO MARU Tanker 5,111 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   CHUYO MARU Cargo 1,900 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   GOSHU MARU Aircraft Ferry 8,592 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   GOZAN MARU Cargo 3,213 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   HOKUTAI MARU Cargo 5,220 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   IRO Tanker 6,500 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   KAMIKAZE MARU Motor Torpedo Boat Tender 4,916 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   KIBI MARU Cargo 2,961 7-19N, 134-28E United States Navy Carrier-
Based Aircraft
Sunk
  30   KIBI MARU Cargo 2,759 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   NISSHO MARU NO 5   Converted Net Tender 783 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   OSE Tanker 7,987 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   RAIZAN MARU Cargo 2,813 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   RYUKO MARU Passenger-Cargo 2,764 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   SATA Tanker 6,500 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   NAGISAN MARU Passenger-Cargo 4,391 7-30N, 134-30E United States Navy Carrier-
Based Aircraft
Sunk
  30   ATLANTIC MARU Cargo 5,873 12-15N, 145-42E United States Submarine Sunk
  30   IKUSHIMA MARU Cargo 3,943 20-42N, 143-00E United States Submarine Sunk
  30   FUJIKAWA MARU Cargo 2,829 1-56N, 133-00E United States Submarine Sunk
        67 Vessels 263,805        
April           1 1944 MINAMI MARU Cargo 2,398 25-56N, 131-18E United States Submarine Sunk
  3   TOSEI MARU Passenger-Cargo 2,814 30-00N, 139-44E United States Submarine Sunk
  5   TENRYU MARU Cargo 554 3-35S, 143-38E United States Army Aircraft Sunk
  8   ARATAMA MARU Converted Submarine Tender 6,784 13-16N, 144-45E United States Submarine Sunk
  8   KIZUGAWA MARU Cargo 1,915 13-16N, 144-45E United States Submarine Sunk
  9   HOKUREI MARU Cargo 515 19-00N, 110-00E United States Army Aircraft Sunk
  9   BISAKU MARU Cargo 4,467 15-22N, 145-06E United States Submarine Sunk
  9   HONAN MARU Cargo 5,401 33-50N, 128-01E United States Submarine Sunk

--57--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
April           12 1944 NARITA MARU Cargo 1,915 2-30S, 140-52E United States Army Aircraft Sunk
  12   TAICHU MARU Passenger-Cargo 3,213 28-07N, 129-01E United States Submarine Sunk
  15   SHINYU MARU Passenger-Cargo 4,621 6-41N, 123-40E United States Submarine Sunk
  15   SUMIDA MARU Cargo 2,022 42-02N, 142-22E Japan Mine* Sunk
  16   YAMAGATA MARU Passenger-Cargo 3,807 7-04N, 123-27E United States Submarine Sunk
  16   MITO MARU Passenger-Cargo 7,061 2-02S, 127-20E United States Submarine Sunk
  16   HINO MARU NO 1 Cargo 2,671 2-02S, 127-20E United States Submarine Sunk
  17   MIKAGE MARU NO 2 Cargo 617 2-41S, 141-18E United States Army Aircraft Sunk
  17   MATSUE MARU Cargo 7,061 9-22N, 142-18E United States Submarine Sunk
  19   KUNITSU MARU Cargo 2,724 5-54N, 95-20E United States Great
Britain
Navy Carrier-
Based Aircraft
Aircraft
Sunk
  19   HARUNO MARU Cargo 776 5-54N, 95-20E United States

Great
Britain
Navy Carrier-
Based Aircraft
Aircraft
Sunk
  20   KENRI MARU Cargo 2,913 34-48N, 125-32E Japan Marine Casualty Probably sunk
  20   IWAKUNI MARU Cargo 619 2-10S, 139-50E United States Army Aircraft Sunk
  22   KORYU MARU Cargo 6,680 10-19N, 107-05E United States Army Aircraft Sunk
  22   NAGATA MARU Converted Gunboat 2,969 10-19N, 107-05E United States Army Aircraft Sunk
  22   LONDON MARU Cargo 7,190 10-19N, 107-05E United States Army Aircraft Sunk
  22   YAMAMIZU MARU NO 3 Tanker 5,244 10-19N, 107-05E United States Army Aircraft Sunk
  23   DAIJU MARU Cargo 1,279 33-35N, 135-45E United States Submarine Sunk
  25   KASHIWA MARU Converted Net Tender 976 7-09N, 116-48E United States Submarine Sunk
  26   WAZAN MARU Cargo 4,851 33-30N, 135-27E United States Submarine Sunk
  26   NOSHIRO MARU Cargo 2,333 28-37N, 141-00E United States Submarine Sunk
  26   TOKIWA MARU Passenger-Cargo 806 6-12N, 125-47E United States Submarine Sunk
  26   YOSHIDA MARU NO 1 Passenger-Cargo 5,425 18-06N, 119-47E United States Submarine Sunk
  27   AKIGAWA MARU Cargo 5,244 14-50N, 142-23E United States Submarine Sunk
  27   MIIKE MARU Passenger-Cargo 11,739 8-20N, 134-53E United States Submarine Sunk
  27   GENBU MARU Passenger-Cargo 1,872 27-20N, 128-15E United States Submarine Sunk
  29   SONG GIANG MARU Cargo 1,065 13-02N, 109-28E United States Submarine Sunk
  29   TAKEGAWA MARU Cargo 1,930 19-26N, 118-45E United States Submarine Sunk
  30   HINO MARU NO 2 Converted Gunboat 998 7-22N, 151-45E United States Navy Carrier-
Based Aircraft
Sunk
  30   NITTATSU MARU Cargo 2,859 19-11N, 119-10E United States Submarine Sunk
        38 Vessels 128,328        
May         1 1944 ASOSAN MARU Cargo 8,812 7-07N, 129-56E United States Submarine Sunk
  2   RYOYO MARU Passenger-Cargo 5,973 48-04N, 153-16E United States Submarine Sunk
  3   AMAGI MARU Passenger-Cargo 3,165 11-00N, 92-00E Great
Britain
Submarine Sunk
  3   SHINGU MARU Cargo 2,745 22-05N, 117-50E United States Army Aircraft Sunk
  3   KENAN MARU Cargo 3,129 15-29N, 145-42E United States Submarine Sunk
* Probable Agent

--58--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
May         3 1944 FUSHIMI MARU Passenger-Cargo 4,935 45-28N, 149-56E United States Submarine Sunk
  3   TEISEN MARU Cargo 5,050 12-54N, 114-07E United States Submarine Sunk
  4   TOYOHI MARU Cargo 6,436 20-51N, 118-02E United States Submarine Sunk
  4   SHORYU MARU Cargo 6,475 20-48N, 118-03E United States Submarine Sunk
  4   EIRYU MARU Converted Net Tender 758 7-04N, 129-18E United States Submarine Sunk
  4   TAIBU MARU Cargo 6,440 20-54N, 118-14E United States Submarine* Sunk
  4   TAIYOKU MARU Cargo 5,244 20-48N, 118-03E United States Submarine* Sunk
  4   KINREI MARU Cargo 5,947 20-58N, 117-59E United States Submarine* Sunk
  5   SHIRANE MARU Cargo 2,825 33-31N, 135-28E United States Submarine Sunk
  6   TOYOURA MARU Cargo 2,510 32-16N, 127-08E United States Submarine Sunk
  6   NISSHIN MARU Tanker 16,801 7-17N, 116-51E United States Submarine Sunk
  6   TENSHINZAN MARU Cargo 6,886 2-42N, 124-10E United States Submarine Sunk
  6   TAIJIMA MARU Passenger-Cargo 6,995 2-42N, 124-10E United States Submarine Sunk
  6   ADEN MARU Passenger-Cargo 5,824 2-42N, 124-10E United States Submarine Sunk
  7   ROSSBACH Tanker 5,894 33-14N, 134-40E United States Submarine Sunk
  8   MIYAZAKI MARU Passenger-Cargo 3,944 41-49N, 141-12E United States Submarine Sunk
  10   OKINAWA MARU Cargo 2,254 11-26N, 143-46E United States Submarine Sunk
  10   MIKAGE MARU NO 18 Passenger-Cargo 4,319 11-26N, 143-46E United States Submarine Sunk
  10   CHOAN MARU NO 2 Converted Gunboat 2,631 11-26N, 143-46E United States Submarine Sunk
  10   SHOHEI MARU Cargo 7,256 15-38N, 119-25E United States Submarine Sunk
  11   CHOI MARU Cargo 1,074 3-30S, 126-06E United States Submarine Sunk
  11   MITAKESAN MARU Passenger-Cargo 4,441 14-58N, 145-26E United States Submarine Sunk
  11   SEIRYU MARU Cargo 1,904 29-30N, 141-40E United States Submarine Sunk
  12   BANEI MARU NO 2 Cargo 1,186 40-01N, 141-58E United States Submarine Sunk
  12   KASUMI MARU Cargo 1,400 5-00N, 100-00E Japan Mine Sunk
  13   ANBO MARU Cargo 4,523 34-31N, 138-33E United States Submarine Sunk
  14   KOHO MARU Cargo 4,291 13-42N, 144-43E United States Submarine Sunk
  14   BISAN MARU Cargo 4,500 9-00N, 133-34E United States Submarine Sunk
  15   JOKUJA MARU Cargo 6,440 10-10N, 131-25E United States Submarine Sunk
  17   SHINREI MARU Cargo 987 5-00S, 110-00E Great
Britain
Navy Aircraft Sunk
  17   TAIKOKU MARU Cargo 2,633 14-57N, 144-47E United States Submarine Sunk
  17   FUKKO MARU Passenger-Cargo 3,834 14-55N, 142-30E United States Submarine Sunk
  17   NICHIWA MARU Cargo 4,955 14-45N, 142-40E United States Submarine Sunk
  18   SHINRYU MARU Cargo 3,181 7-36S, 113-12E United States Submarine Sunk
  20   JINJU MARU Cargo 3,192 21-05N, 117-00E United States Army Aircraft Sunk
  20   SHOSEI MARU Converted Gunboat 998 13-32N, 144-36E United States Submarine Sunk
  20   MIYAURA MARU Cargo 1,856 2-14N, 128-00E United States Submarine Sunk
  20   OTORI MARU Cargo 2,105 5-40S, 105-27E United States Submarine Sunk
  22   KOSHO MARU Cargo 1,365 4-55N, 100-21E Great
Britain
Submarine Sunk
  22   TENPEI MARU Passenger-Cargo 6,094 5-43N, 127-37E United States Submarine Sunk
  22   TSUKUBA MARU Cargo 3,172 21-20N, 117-10E United States Army Aircraft Submarine Sunk
  23   TAIJUN MARU Cargo 2,825 2-38N, 128-08E United States Submarine Sunk
  24   TACHI MARU Passenger-Cargo 1,891 30-00N, 116-48E Japan Marine Casualty Sunk
* Probable Agent

--59--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
May         24 1944 TATEKAWA MARU Tanker 10,090 5-45N, 125-45E United States Submarine Sunk
  24   WALES MARU Passenger-Cargo 6,586 7-16N, 109-04E United States Submarine Sunk
  24   BIZEN MARU Cargo 4,667 7-25N, 108-43E United States Submarine Sunk
  25   TAITO MARU Passenger-Cargo 4,466 11-30N, 134-55E United States Submarine Sunk
  25   OSAKA MARU Passenger-Cargo 3,740 11-30N, 134-55E United States Submarine Sunk
  26   CHIYO MARU Cargo 657 20-30N, 141-45E United States Submarine Sunk
  26   SANYO MARU Converted Seaplane Tender 8,360 2-48N, 124-19E United States Submarine Sunk
  26   AKISHIMA MARU Cargo 1,993 33-48N, 131-33E United States Army Mine Sunk
  29   ANSHU MARU Converted Gunboat 2,601 3-40S, 126-58E United States Submarine Sunk
  29   SHOKEN MARU Cargo 1,949 16-23N, 144-59E United States Submarine Sunk
  29   HORAIZAN MARU Cargo 1,999 16-23N, 144-59E United States Submarine Sunk
  30   SHIGA MARU Cargo 742 33-15N, 134-11E United States Submarine Sunk
  30   SHISEN MARU Cargo 2,201 24-30N, 122-30E United States Submarine Sunk
  31   HOKUYO MARU Cargo 1,590 48-00N, 153-00E United States Submarine Sunk
  31   KOTO MARU Cargo 1,053 47-52N, 151-02E United States Submarine Sunk
  31   MADRAS MARU Passenger-Cargo 3,802 48-21N, 151-19E United States Submarine Sunk
        64 Vessels 258,591        
June         1 1944 TOHO MARU Cargo 4,716 18-13N, 141-19E United States Submarine Sunk
  1   IWAKI MARU Cargo 3,124 48-00N, 153-00E United States Submarine Sunk
  1   HIBURI MARU Passenger-Cargo 4,365 48-00N, 153-00E United States Submarine Sunk
  2   CHIYO MARU Cargo 4,700 20-53N, 140-17E United States Submarine Sunk
  4   KATSUKAWA MARU Cargo 6,886 19-35N, 138-43E United States Submarine Sunk
  4   HAKUSAN MARU Transport 10,380 22-55N, 136-44E United States Submarine Sunk
  5   ASHIZURI Tanker 2,166e 6-32N, 120-40E United States Submarine Sunk
  5   TAKASAKI Tanker 2,500e 6-32N, 120-40E United States Submarine Sunk
  5   TAMAHIME MARU Cargo 3,080 17-37N, 140-32E United States Submarine Sunk
  5   TAKAOKA MARU Passenger-Cargo 7,006 17-37N, 140-32E United States Submarine Sunk
  6   KASHIMASAN MARU Cargo 2,825 16-41N, 142-43E United States Submarine Sunk
  6   HAVRE MARU Cargo 5,652 16-41N, 142-43E United States Submarine Sunk
  8   SHIOYA Tanker 4,000e 3-04N, 124-03E United States Submarine Sunk
  10   HIYOSHI MARU Cargo 535 3-05N, 99-56E Great
Britain
Submarine Sunk
  10   KINMON MARU Cargo 2,676 1-17S, 103-51E Japan Marine Casualty Sunk
  11   ASANAGI MARU Tanker 5,142 6-20N, 120-47E United States Submarine Sunk
  11   TOTEN MARU Cargo 3,823 46-58N, 143-50E United States Submarine Sunk
  11   CHIHAYA MARU Cargo 1,161 46-58N, 143-50E United States Submarine Sunk
  12   KAINAN MARU Cargo 1,133 7-54N, 98-27E Great
Britain
Submarine Sunk
  12   KEIYO MARU Passenger-Cargo 6,442 15-14N, 145-44E United States Navy Carrier-
Based Aircraft Surface Craft
Sunk
  12   BATAVIA MARU Passenger-Cargo 4,392 17-32N, 143-17E United States Navy Carrier-
Based Aircraft
Sunk
  12   FUKOKU MARU Cargo 2,851 17-30N, 144-00E United States Navy Carrier-
Based Aircraft
Sunk

--60--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
June         12 1944 HINKO MARU Cargo 5,418 17-28N, 144-19E United States Navy Carrier-Based Aircraft Sunk
  12   IMIZU MARU Passenger-Cargo 2,924 17-30N, 144-00E United States Navy Carrier-Based Aircraft Sunk
  12   KOKKO MARU Converted Net Tender 716 17-32N, 144-01E United States Navy Carrier-Based Aircraft Sunk
  12   NITCHO MARU Cargo 1,900e 17-31N, 143-10E United States Navy Carrier-Based Aircraft Sunk
  12   REIKAI MARU Cargo 2,750 17-30N, 144-00E United States Navy Carrier-Based Aircraft Sunk
  12   MOJI MARU Passenger-Cargo 3,831 17-31N, 144-10E United States Navy Carrier-Based Aircraft Sunk
  12   MUTSUYO MARU Cargo 2,726 15-14N, 145-44E United States Navy Carrier-Based Aircraft Sunk
  12   TENRYUGAWA MARU Cargo 3,883 17-30N, 144-00E United States Navy Carrier-Based Aircraft Sunk
  12   SHINTO MARU Cargo 2,245 17-28N, 144-19E United States Navy Carrier-Based Aircraft Sunk
  13   TAKASHIMA MARU Passenger-Cargo 5,633 50-47N, 151-20E United States Submarine Sunk
  14   KOAN MARU Cargo 3,183 4-31N, 122-25E United States Submarine Sunk
  15   KOA MARU NO 2 GO Cargo 572 15-10N, 145-58E United States Navy Carrier-Based Aircraft Probably sunk
  15   KANZAKI MARU Cargo 1,285 36-01N, 129-41E Japan Marine Casualty Sunk
  15   TATSUTAGAWA MARU Cargo 1,923 25-02N, 144-37E United States Navy Carrier-Based Aircraft
Surface Craft
Sunk
  15   KANSEISHI MARU Cargo 4,804 29-30N, 141-11E United States Submarine Sunk
  16   HINODE MARU Cargo 1,916 1-01N, 127-49E United States Army Aircraft Sunk
  16   SHOFUKU MARU Cargo 839 00-53S, 131-15E United States Army Aircraft Sunk
  16   YUKI MARU Cargo 5,704 2-19N, 128-40E United States Submarine Sunk
  16   NANSHIN MARU Passenger-Cargo 1,422 2-28N, 118-09E United States Submarine Sunk
  17   MINYU MARU Cargo 529 00-54S, 131-15E United States Army Aircraft Sunk
  17   NIPPONKAI MARU Motor Torpedo Boat Tender 2,681 6-58N, 127-52E United States Submarine Sunk
  17   KINSHU MARU Cargo 5,591 6-17N, 126-17E United States Submarine Sunk
  18   EIKO MARU Cargo 3,011 5-59N, 99-10E Great
Britain
Submarine Sunk
  20   GENYO MARU Tanker 10,018 15-30N, 133-55E United States Navy Carrier-Based Aircraft Sunk
  20   SEIYO MARU Tanker 10,536 15-30N, 133-55E United States Navy Carrier-Based Aircraft Sunk
  20   HIBI MARU Passenger-Cargo 5,874 5-35N, 125-15E United States Submarine Sunk
  21   KANAN MARU Cargo 3,312 4-04S, 116-45E United States Submarine Sunk
  22   NAGARAGAWA MARU Passenger-Cargo 990 34-35N, 137-56E United States Submarine Sunk
  23   SHOUN MARU Passenger-Cargo 4,396 14-10N, 145-10E United States Navy Carrier-
Based Aircraft
Sunk
  24   ASO MARU Passenger-Cargo 3,028 9-57N, 125-07E United States Submarine Sunk

--61--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
June         24 1944 KUMANOYAMA MARU Cargo 2,857 34-36N,
139-32E
United
States
Submarine Sunk
  24   TAMAHOKO MARU Passenger-Cargo 6,780 32-30N,
129-35E
United
States
Submarine Sunk
  24   TAINAN MARU Cargo 3,175 32-30N,
129-35E
United
States
Submarine Sunk
  24   NASUSAN MARU Passenger-Cargo 4,399 32-30N,
129-35E
United
States
Submarine Sunk
  24   KENNICHI MARU Cargo 1,938 32-30N,
129-35E
United
States
Submarine* Sunk
  25   YAMAMIYA MARU Cargo 6,440 3-36N,
127-14E
United
States
Submarine Sunk
  25   SAN PEDRO MARU Tanker 7,268 16-07N,
119-44E
United
States
Submarine Sunk
  26   HARUKIKU MARU Passenger-Cargo 3,040 3-15N,
99-46E
Great
Britain
Submarine Sunk
  27   MEDAN MARU Tanker 5,135 21-21N,
120-18E
United
States
Submarine Sunk
  28   USSURI MARU Passenger-Cargo 6,386 23-14N,
119-49E
United
States
Army Aircraft Sunk
  28   SANSEI MARU Cargo 2,386 34-03N,
129-00E
United
States
Submarine Sunk
  28   YAMAGIKU MARU Cargo 5,236 6-50N,
122-41E
United
States
Submarine Sunk
  29   KATORI MARU Cargo 1,920 19-09N,
120-27E
United
States
Submarine Sunk
  29   TOYAMA MARU Passenger-Cargo 7,089 27-41N,
129-09E
United
States
Submarine Sunk
  29   NIPPO MARU Cargo 6,079 00-43N,
105-31E
United
States
Submarine Sunk
  30   HYAKUFUKU MARU Converted Gunboat 986 28-22N,
141-17E
United
States
Submarine Sunk
  30   NIKKIN MARU Cargo 5,705 35-03N,
125-08E
United
States
Submarine Sunk
  30   TSURUSHIMA MARU Cargo 4,645 14-25N,
119-47E
United
States
Submarine Sunk
  30   MATSUKAWA MARU Cargo 3,825 14-25N,
119-47E
United
States
Submarine Sunk
        71 Vessels 278,484        
July      1 1944 TAIUN MARU NO 2 Cargo 998 34-33N,
125-12E
United
States
Submarine Sunk
  1   TAKATORI MARU NO 1 Tanker 878 34-27N,
123-46E
United
States
Submarine Sunk
  1   NIKKO MARU Cargo 3,098 5-39S,
119-28E
United
States
Navy Mine Sunk
  3   NITTO MARU Cargo 2,186 19-28N,
115-41E
United
States
Submarine Sunk
  3   GYOYU MARU Passenger-Cargo 2,232 19-28N,
115-41E
United
States
Submarine Sunk
  3   KONSAN MARU Passenger-Cargo 2,733 32-24N,
128-46E
United
States
Submarine Sunk
  3   KAMO MARU Passenger-Cargo 7,954 32-24N,
128-46E
United
States
Submarine Sunk
  3   TAIRIN MARU Cargo 6,862 38-52N,
129-56E
United
States
Submarine Sunk
  4   RYUKO MARU Cargo 5,626 27-05N,
142-09E
United
States
Navy Carrier-
Based Aircraft
Sunk
  4   UNYO MARU NO 8 Cargo 1,942 27-05N,
142-09E
United
States
Navy Carrier-
Based Aircraft
Sunk
  4   SHIMA MARU Cargo 1,987 27-07N,
142-12E
United
States
Navy Carrier-
Based Aircraft
Sunk
  4   SHINMEI MARU Cargo 1,942 27-07N,
142-12E
United
States
Navy Carrier-
Based Aircraft
Sunk
  4   SHOZUI MARU Cargo 2,719 27-07N,
142-12E
United
States
Navy Carrier-
Based Aircraft
Sunk
* Probable Agent

--62--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
July      4 1944 TAIKO MARU Cargo 897 27-05N, 142-09E United States Navy Carrier-Based Aircraft Sunk
  4   KYODO MARU NO 28 Cargo 1,506 20-20N, 114-54E United States Submarine Sunk
  4   TAMA MARU Passenger-Cargo 3,052 7-33N, 133-45E United States Submarine Sunk
  4   ASUKAZAN MARU Cargo 6,886 35-22N, 125-56E United States Submarine Sunk
  4   YAMAOKA MARU Cargo 6,932 36-05N, 125-48E United States Submarine Sunk
  5   KOGI MARU Converted Net Tender 857 27-43N, 141-02E United States Submarine Sunk
  5   SHINMEI MARU Passenger-Cargo 2,577 51-35N, 156-30E United States Submarine Sunk
  6   SETSUZAN MARU Cargo 1,922 29-59N, 122-53E United States Submarine Sunk
  6   DORI MARU Cargo 1,469 38-40N, 123-40E United States Submarine Sunk
  7   KOTO MARU Cargo 3,557 13-02N, 109-26E United States Submarine Sunk
  8   MATSU MARU Cargo 887 40-56N, 141-27E United States Submarine Sunk
  9   OYASHIMA MARU Cargo 853 00-34N, 128-30E United States Army Aircraft Sunk
  9   TAIHEI MARU Cargo 6,284 51-17N, 155-34E United States Submarine Sunk
  10   IYANG MARU Cargo 943 31-00N, 122-30E United States Army Mine Sunk
  11   TSUKUSHI MARU NO 2    Cargo 2,417 37-24N, 124-31E United States Submarine Sunk
  11   TAIAN MARU NO 2 Cargo 1,034 37-30N, 124-32E United States Submarine Sunk
  12   NICHIRAN MARU Passenger-Cargo 6,504 18-33N, 122-53E United States Submarine Sunk
  13   SANNAN MARU NO 2 Cargo 881 37-37N, 125-14E Japan Marine Casualty Probably sunk
  13   TOKAI MARU Cargo 519 1-32N, 127-32E United States Army Aircraft Sunk
  13   TAISHI MARU Cargo 2,800 27-23N, 140-33E United States Submarine Sunk
  14   TAIKO MARU Converted Gunboat 2,984 6-00S, 121-30E United States Submarine Sunk
  15   MIHO MARU Cargo 515 48-07N, 148-06E United States Submarine Sunk
  16   HOZAN MARU Cargo 2,893 14-36N, 120-57E Japan Marine Casualty Sunk
  16   NIPPO MARU Cargo 1,942 48-12N, 148-03E United States Submarine Sunk
  16   SEATTLE MARU Passenger-Cargo 5,773 19-26N, 120-18E United States Submarine* Sunk
  16   JINZAN MARU Passenger-Cargo 5,215 18-20N, 119-42E United States Submarine* Sunk
  16   MANTAI MARU Cargo 5,863 18-20N, 119-42E United States Submarine* Sunk
  17   MAYA MARU Passenger-Cargo 3,145 7-40N, 122-03E United States Submarine Sunk
  17   HIYAMA MARU Cargo 2,838 18-17N, 119-50E United States Submarine* Sunk
  17   SAINEI MARU Cargo 4,916 19-04N, 119-26E United States Submarine* Sunk
  17   SHOZAN MARU Cargo 2,838 19-04N, 119-26E United States Submarine* Sunk
  18   JANBI MARU Tanker 5,244 5-21S, 112-30E United States Submarine Sunk
  18   UNKAI MARU NO 10 Converted Gunboat 855 29-12N, 139-10E United States Submarine Sunk
  18   NISSHU MARU Cargo 7,785 28-43N, 139-24E United States Submarine Sunk
  18   KYODO MARU NO 36 Passenger-Cargo 1,499 8-22N, 116-40E United States Submarine Sunk
  19   TEIRYU MARU Cargo 6,550 20-07N, 118-20E United States Submarine Sunk
  23   KISO MARU Cargo 554 14-00N, 86-50E Great
Britain
Submarine Sunk
  23   TAKASAN MARU Cargo 1,428 4-35S, 122-17E Australia Mine Sunk
  24   ASAHISAN MARU Passenger-Cargo 4,550 1-10N, 127-54E United States Army Aircraft Sunk
  25   HOSHIN MARU Cargo 1,000 22-50N, 116-00E United States Army Aircraft Sunk
  26   AKI MARU Passenger-Cargo 11,409 18-28N, 117-59E United States Submarine Sunk
  26   OTORIYAMA MARU Tanker 5,280 18-10N, 117-56E United States Submarine Sunk
  26   TOSAN MARU Passenger-Cargo 8,666 18-13N, 117-50E United States Submarine Sunk
* Probable Agent

--63--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
July      27 1944 KYOEI MARU NO 2 Tanker 1,157 5-25N, 121-43E United States Submarine Sunk
  28   HAKUBASAN MARU Passenger-Cargo 6,650 16-18N, 119-44E United States Submarine Sunk
  28   PEKING MARU Transport 2,288 17-33N, 120-21E United States Submarine Sunk
  30   KOKUYO MARU Tanker 10,026 6-03N, 119-54E United States Submarine Sunk
  31   KOEI MARU Tanker 10,238 19-10N, 120-58E United States Submarine Sunk
  31   MANKO MARU Passenger-Cargo 4,471 19-10N, 120-58E United States Submarine Sunk
  31   DAKAR MARU Cargo 7,169 18-57N, 120-50E United States Submarine Sunk
  31   FUSO MARU Transport 8,195 18-57N, 120-50E United States Submarine Sunk
  31   TENSHIN MARU Tanker 5,061 8-22N, 116-40E United States Submarine Sunk
  31   YOSHINO MARU Transport 8,990 19-10N, 120-58E United States Submarine Sunk
        66 Vessels 251,921        
August 1 1944 SEIA MARU Passenger-Cargo 6,659 1-46S, 125-32E United States Navy Land-
Based Aircraft
Sunk
  2   KONEI MARU Cargo 1,922 33-57N, 136-20E United States Submarine Sunk
  3   SEIKO MARU Converted Net Tender 708 1-45S, 126-14E United States Submarine Sunk
  4   TONEGAWA MARU Cargo 4,996 27-40N, 141-48E United States Navy Carrier-
Based Aircraft
Surface Craft
Sunk
  4   ENJU MARU Passenger-Cargo 5,374 27-40N, 141-48E United States Navy Carrier-
Based Aircraft
Sunk
  4   UNKAI MARU NO 7 Cargo 2,182 27-40N, 141-48E United States Navy Carrier-
Based Aircraft
Sunk
  4   SHOGEN MARU Cargo 4,739 27-40N, 141-48E United States Navy Carrier-
Based Aircraft
Sunk
  4   KOSHU MARU Cargo 2,612 3-59S, 117-54E United States Submarine Sunk
  5   SHIRAHAMA MARU Cargo 2,812 4-40S, 122-47E United States Army Aircraft Sunk
  5   MIYAKO MARU Passenger-Cargo 970 27-36N, 128-54E United States Submarine Sunk
  5   TSURUMI Tanker 6,500e 5-50N, 125-42E United States Submarine Sunk
  6   UWAJIMA MARU NO 15 Passenger-Cargo 824 4-31S, 129-53E Netherlands Aircraft Sunk
  6   SHIROGANESAN MARU Cargo 4,739 14-14N, 117-16E United States Submarine Sunk
  6   SHONAN MARU Cargo 5,401 30-53N, 129-47E United States Submarine Sunk
  7   SANJU MARU Cargo 4,642 6-04N, 124-22E United States Submarine Sunk
  9   KOSHIN MARU Cargo 6,530 26-10N, 124-15E Japan Marine Casualty Sunk
  9   TOKUYUSAN MARU Cargo 813 1-12N, 128-08E United States Army Aircraft Sunk
  9   YAGI MARU Cargo 1,937 27-52N, 128-49E United States Submarine Sunk
  9   BOKO MARU Cargo 2,333 27-52N, 128-49E United States Submarine Sunk
  10   SHINEI MARU Cargo 5,135 16-17N, 119-46E United States Submarine Sunk
  11   ROKO MARU Cargo 3,328 34-12N, 136-19E United States Submarine Sunk
  11   IKUTA MARU Tanker 1,018 2-56S, 104-56E United States Army Mine Sunk
  12   MAYACHI MARU Cargo 2,159 50-28N, 144-09E United States Submarine Sunk
  12   TEIKON MARU Tanker 5,113 13-17N, 120-07E United States Submarine Sunk
  12   SHIMPO MARU Tanker 5,135 13-17N, 120-07E United States Submarine Sunk
  13   BUTSU MARU Tanker 5,949 20-16N, 121-52E Japan Marine Casualty Sunk

--64--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
August 13 1944 TOEI MARU Cargo 2,323 48-56N, 129-03E United States Submarine Sunk
  13   KOJUN MARU Cargo 1,931 6-17N, 126-09E United States Submarine Sunk
  13   ASAHI MARU NO 2 Cargo 1,322 22-00N, 114-45E United States Army Aircraft* Sunk
  14   TSURUHA MARU Cargo 1,849 Off Formosa Unknown Unknown Sunk
  14   MIIKESAN MARU Cargo 3,179 22-00N, 120-00E United States Army Aircraft Sunk
  14   ZUISHO MARU Passenger-Cargo 5,289 3-52N, 112-56E United States Submarine Sunk
  14   DAIGEN MARU NO 7 Converted Gunboat   1,289 37-25N, 125-12E United States Submarine Sunk
  14   TOSHO MARU Cargo 1,236 4-31S, 125-26E United States Army Aircraft Sunk
  17   SANSHO MARU Cargo 6,862 35-38N, 126-10E United States Submarine Sunk
  18   EISHIN MARU Cargo 542 18-16N, 120-20E United States Submarine Sunk
  18   TEIYO MARU Tanker 9,849 18-09N, 119-56E United States Submarine Sunk
  18   NANSEI MARU Tanker 5,878 8-48N, 116-58E United States Submarine Sunk
  19   TEIA MARU Transport 17,537 18-09N, 119-56E United States Submarine Sunk
  19   TAMATSU MARU Passenger-Cargo 9,589 18-49N, 119-47E United States Submarine Sunk
  19   HAYASUI Tanker 6,500e 17-34N, 119-24E United States Submarine Sunk
  20   CHUKO MARU Cargo 1,068 22-23N, 115-34E United States Army Aircraft Sunk
  21   TAKETOYO MARU Passenger-Cargo 6,965 13-23N, 120-19E United States Submarine Sunk
  21   UGA MARU Passenger-Cargo 4,433 13-23N, 120-19E United States Submarine Sunk
  21   KINRYO MARU Passenger-Cargo 4,390 13-23N, 120-19E United States Submarine Sunk
  21   NORFOLK MARU Passenger-Cargo 6,576 13-23N, 120-19E United States Submarine Sunk
  21   DURBAN MARU Passenger-Cargo 7,163 11-43N, 109-17E United States Submarine Sunk
  22   SUGI MARU NO 5 Cargo 1,983 11-40N, 92-45E Great
Britain
Submarine Sunk
  22   TONAN MARU NO 2 Tanker 19,262 29-44N, 125-22E United States Submarine Sunk
  22   HAKKO MARU NO 2 Tanker 10,023 18-48N, 120-48E United States Submarine Sunk
  22   TSUSHIMA MARU Passenger-Cargo 6,754 29-32N, 129-31E United States Submarine Sunk
  23   TSUKUSHI MARU Transport 8,135 34-37N, 137-50E United States Submarine Sunk
  24   YOSHIDA MARU NO 3 Cargo 4,646 25-13N, 121-49E United States Submarine Sunk
  24   FUKUREI MARU Cargo 5,969 25-13N, 121-49E United States Submarine Sunk
  24   TOAN MARU Cargo 2,110 21-29N, 121-18E United States Submarine Sunk
  24   TOSEI MARU Cargo 531 42-30N, 144-05E United States Submarine Sunk
  25   BATOPAHA MARU Cargo 5,953 18-33N, 120-34E United States Submarine Sunk
  25   KOTOKU MARU Cargo 1,943 18-46N, 120-46E United States Submarine Sunk
  27   NANSHIN MARU NO 27 Tanker 834 12-28N, 119-57E United States Submarine Sunk
  29   TIENTSIN MARU Passenger-Cargo 2,349 31-23N, 121-30E United States Army Mine Sunk
  29   MEXICO MARU Passenger-Cargo 5,785 2-07N, 122-28E United States Submarine Sunk
  30   IWAISHIMA MARU Cargo 695 33-07N, 119-59E United States Army Mine Sunk
  31   FENGYANG MARU Passenger-Cargo 3,977 30-11N, 115-07E United States Army Aircraft Sunk
  31   TOKUHEI MARU Cargo 3,439 30-11N, 115-07E United States Army Aircraft Sunk
  31   CHIYODA MARU Tanker 4,700 21-21N, 121-06E United States Submarine Sunk
  31   OKUNI MARU Cargo 5.633 21-14N, 121-22E United States Submarine Sunk
        66 Vessels 295,022        
*Probable Agent

--65--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
September 1 1944 SEKINO MARU Cargo 997 1-10N, 122-25E United States Navy Land-Based Aircraft Sunk
  1   INA MARU Cargo 853 30-26N, 140-53E United States Navy Carrier-
Based Aircraft
Sunk
  1   SURUGA MARU Cargo 525 25-45N, 141-29E United States Navy Carrier-
Based Aircraft
Sunk
  1   NAMBA MARU Cargo 2,300e 31-10N, 121-50E United States Army Mine Sunk
  2   MISAKI MARU NO 2 Cargo 769 46-55N, 152-00E Japan Marine Casualty Sunk
  5   SHINGETSU MARU Cargo 880 32-24N, 134-15E United States Submarine Sunk
  5   SHIRETOKO MARU Cargo 1,799 5-42S, 104-58E Great
Britain
Submarine Sunk
  6   EIJI MARU Cargo 6,968 22-19N, 120-30E United States Army Mine Sunk
  7   SHINYO MARU Cargo 2,518 8-11N, 122-40E United States Submarine Sunk
  7   KOKKA MARU Cargo 5,300 25-12N, 121-45E United States Army Mine Sunk
  7   EIYO MARU NO 2 Tanker 5,061 8-11N, 122-40E United States Navy Carrier-
Based Aircraft
Submarine
Sunk
  8   NICHIMAN MARU Cargo 1,922 24-46N, 123-15E United States Submarine Sunk
  8   NICHIAN MARU Cargo 6,197 24-46N, 123-15E United States Submarine Sunk
  8   SHINTEN MARU Cargo 1,254 24-39N, 123-31E United States Submarine Sunk
  8   SHOKEI MARU Cargo 2,557 24-39N, 123-31E United States Submarine Sunk
  8   YANAGIGAWA MARU Cargo 2,813 8-14N, 121-47E United States Submarine Sunk
  9   MIHARA MARU Passenger-Cargo 697 9-45N, 125-30E United States Navy Carrier-
Based Aircraft
Sunk
  9   KURENAI MARU Passenger-Cargo 1,547 9-45N, 125-30E United States Navy Carrier-
Based Aircraft
Sunk
  9   TAIYU MARU Cargo 1,873 9-45N, 125-30E United States Navy Carrier-
Based Aircraft
Sunk
  9   KUNIYAMA MARU Cargo 2,750e 6-30N, 121-50E United States Navy Land-Based Aircraft Sunk
  9   TOYOOKA MARU Passenger-Cargo 7,097 19-45N, 120-56E United States Submarine Sunk
  9   MANSHU MARU Transport 3,054 19-45N, 120-56E United States Submarine Sunk
  9   SHONAN MARU Passenger-Cargo 5,859 47-58N, 148-20E United States Submarine Sunk
  9   SAINAN MARU Passenger-Cargo 3,232 31-23N, 121-30E United States Army Mine Sunk
  9   TOKIWASAN MARU Cargo 1,804 28-53N, 137-42E United States Submarine Sunk
  9   SHORYU MARU Cargo 1,916 28-53N, 137-42E United States Submarine Sunk
  10   UNYO MARU NO 7 Cargo 839 7-03N, 125-40E United States Navy Carrier-
Based Aircraft
Probably sunk
  10   JOOSAN MARU Cargo 1,816 Off China Unknown Unknown Sunk
  10   KINMO MARU Cargo 522 25-13N, 141-01E United States Navy Carrier-
Based Aircraft
Sunk
  10   HINOKI MARU Converted Net Tender 599 6-27S, 116-48E United States Submarine Sunk
  10   CHIHAYA MARU Tanker 4,701 33-52N, 127-41E United States Submarine Sunk
  10   HOEI MARU NO 2 Tanker 834 31-23N, 121-37E United States Army Mine Sunk
  10   TAKEKUN MARU Tanker 3,029 3-54N, 98-43E Great
Britain
Mine* Sunk
* Probable Agent

--66--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
September 11 1944 HAKUUN MARU NO 2 Cargo 860 27-37N, 140-21E United States Submarine Sunk
  11   HASSHO MARU Cargo 536 27-37N, 140-21E United States Submarine Sunk
  12   AYAZONO MARU Tanker 2,854 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   BUGEN MARU Cargo 691 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   DAIAKITA MARU Cargo 2,704 11-21N, 124-07E United States Navy Carrier-
Based Aircraft
Sunk
  12   GENKAI MARU Passenger-Cargo 3,850 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   HAKUMI MARU Cargo 2,857 10-34N, 124-01E United States Navy Carrier-
Based Aircraft
Sunk
  12   KEIAN MARU Cargo 2,084 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   KISO MARU Cargo 703 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   KOREI MARU Cargo 540 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   RAKUTO MARU Passenger-Cargo 2,962 10-35N, 124-20E United States Navy Carrier-
Based Aircraft
Sunk
  12   NICHIEI MARU Cargo 2,436 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   TOYO MARU Cargo 544 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   SHINTAI MARU NO 5 Cargo 534 10-20N, 124-00E United States Navy Carrier-
Based Aircraft
Sunk
  12   HAKUTETSU MARU NO 7 Cargo 1,018 33-31N, 135-57E United States Submarine Sunk
  12   NANKAI MARU Passenger-Cargo 8,416 18-42N, 114-30E United States Submarine Sunk
  12   RAKUYO MARU Passenger-Cargo 9,419 18-42N, 114-30E United States Submarine Sunk
  12   KACHIDOKI MARU Transport 10,509 19-18N, 111-53E United States Submarine Sunk
  12   ZUIHO MARU Tanker 5,135 19-18N, 111-53E United States Submarine Sunk
  13   AKITSUSHIMA MARU Cargo 542 3-04S, 128-11E United States Army Aircraft Sunk
  13   USA MARU Cargo 842 23-52N, 118-56E United States Army Aircraft Sunk
  13   ETASHIMA MARU Cargo 6,435 35-04N, 124-49E United States Submarine Sunk
  14   KONAN MARU Cargo 1,334 42-07N, 140-47E Japan Marine Casualty Sunk
  16   SHINAI MARU Cargo 2,410 4-07S, 122-44E United States Navy Land-
Based Aircraft
Sunk
  16   OGURA, MARU NO 2 Tanker 7,311 21-23N, 121-17E United States Submarine Sunk
  16   TOKUSHIMA MARU Passenger-Cargo 5,975 21-15N, 121-29E United States Submarine Sunk
  16   IMAJI MARU Cargo 1,986 5-08N, 115-05E Japan Mine Sunk
  16   AZUSA MARU Tanker 11,177 19-18N, 116-26E United States Submarine Sunk
  17   DAIGEN MARU NO 10 Cargo 2,110 33-46N, 130-22E Japan Marine Casualty Sunk
  18   JUNYO MARU Cargo 5,065 2-53S, 101-10E Great
Britain
Submarine Sunk
  18   GYOKU MARU Cargo 6,854 35-05N, 124-24E United States Submarine Sunk

--67--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
September 18 1944 SAIGON MARU Converted Light Cruiser 5,350 14-11N, 120-02E United States Submarine Sunk
  19   TOSEI MARU NO 2 Tanker 507 24-56N, 122-14E United States Submarine Sunk
  21   YAMABUKI MARU Cargo 5,081 14-45N, 120-12E United States Navy Carrier-
Based Aircraft
Sunk
  21   CHINA MARU Passenger-Cargo 5,869 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   HIOKI MARU Cargo 5,320 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   HOFUKU MARU Passenger-Cargo 5,825 15-25N, 119-50E United States Navy Carrier-
Based Aircraft
Sunk
  21   IWASHIRO MARU Cargo 873 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   NIYO MARU Tanker 10,022 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   NORWAY MARU Passenger-Cargo 5,832 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   NOSHIRO MARU Converted Light Cruiser 7,189 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   OGURA MARU NO 1 Tanker 7,270 15-25N, 119-50E United States Navy Carrier-
Based Aircraft
Sunk
  21   RISSHUN MARU Passenger-Cargo 4,414 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   ROZAN MARU Passenger-Cargo 6,638 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   NANSEI MARU Cargo 2,218 14-45N, 120-12E United States Navy Carrier-
Based Aircraft
Sunk
  21   KUROGANE MARU Cargo 2,700 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   KYOKUTO MARU Tanker 10,051 14-25N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   TSUKUBASAN MARU Cargo 1,937 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   YUKI MARU Cargo 3,168 15-25N, 119-50E United States Navy Carrier-
Based Aircraft
Sunk
  21   SHICHIYO MARU Cargo 557 15-25N, 119-50E United States Navy Carrier-
Based Aircraft
Sunk
  21   SURAKARUTA MARU Cargo 6,886 15-25N, 119-50E United States Navy Carrier-
Based Aircraft
Sunk
  21   TAKASAGO MARU NO 3 Tanker 834e 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk
  21   MIZUHO MARU Transport 8,506 18-35N, 120-39E United States Submarine Sunk
  21   RIZAN MARU Cargo 4,747 49-16N, 145-29E United States Submarine Sunk
  21   AWAJI MARU Cargo 1,948 18-43N, 120-52E United States Submarine Sunk
  21   YOZAN MARU Cargo 6,487 14-35N, 120-55E United States Navy Carrier-
Based Aircraft
Sunk

--68--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
September 22 1944 CERAM MARU Tanker 2,858 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  22   HORAI MARU NO 2 Tanker 834e 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  22   NANMEI MARU NO 9 Tanker 834e 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  22   NANSHIN MARU NO 24 Tanker 834e 16-36N, 120-18E United
States
Navy Carrier-
Based Aircraft
Sunk
  22   TAIYU MARU Cargo 1,942 16-36N, 120-18E United
States
Navy Carrier-
Based Aircraft
Sunk
  22   SHUN YUAN Cargo 1,610 15-22N, 119-17E United
States
Submarine Sunk
  23   TOSHO MARU Cargo 1,289 4-23S, 122-43E United
States
Navy Land-
Based Aircraft
Sunk
  24   KOGYO MARU Cargo 6,353 11-59N, 120-02E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   OKIGAWA MARU Tanker 10,043 14-00N, 119-00E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   CHUKA MARU Cargo 2,189 11-13N, 123-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   EKKAI MARU Cargo 2,984 11-59N, 120-02E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   FUKUEI MARU NO 17 Cargo 830 11-54N, 123-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   IRAKO Collier 6,500e 11-59N, 120-02E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   KENWA MARU Tanker 6,384 11-13N, 123-10E United
States
Navy Carrier-
Based Aircraft
Sank
  24   KOSHU MARU NO 2 Cargo 866 11-54N, 123-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   OLYMPIA MARU Passenger-Cargo 5,617 11-59N, 120-02E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   KYOKUZAN MARU Cargo 6,300 11-59N, 120-02E United
States
Navy Carrier-
Based Aircraft
Sank
  24   SHINYO MARU Passenger-Cargo 4,658 12-21N, 123-00E United
States
Navy Carrier-
Based Aircraft
Sank
  24   SIBERIA MARU Transport 3,461 11-54N, 123-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   TAIEI MARU Tanker 10,045 11-59N, 120-02E United
States
Navy Carrier-
Based Aircraft
Sank
  25   ROKKOSAN MARU Cargo 2,174 22-28N, 118-38E United
States
Army Aircraft Sunk
  25   BUSHU MARU Cargo 1,222 29-50N, 130-06E United
States
Submarine Sunk
  25   MIYAKAWA MARU NO 2 Cargo 873 38-30N, 124-06E United
States
Submarine Sunk
  25   NISSEI MARU Cargo 1,468 37-32N, 124-33E United
States
Submarine Sunk
  26   KOETSU MARU Cargo 873 37-13N, 123-48E United
States
Submarine Sunk
  27   URAL MARU Transport 6,374 15-40N, 117-18E United
States
Submarine Sunk

--69--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
September 27 1944 HOKKI MARU Tanker 5,599 15-45N, 117-48E United
States
Submarine Sunk
  27   HACHIROGATA MARU Cargo 1,999 46-32N, 146-48E United
States
Submarine Sunk
  28   TONE MARU Cargo 537 1-15S, 116-50E United
States
Navy Land-
Based Aircraft
Sunk
  28   ANJO MARU Tanker 2,068 13-16N, 120-08E United
States
Submarine Sunk
  29   EKISAN MARU Cargo 3,690 27-12N, 128-18E United
States
Submarine Sunk
        120 Vessels 419,112        
October     1 1944 SEIAN MARU Passenger-Cargo 1,990 28-11N, 139-30E United
States
Submarine Sunk
  1   TAKUNAN MARU Cargo 751 30-32N, 138-17E United
States
Submarine Sunk
  1   ZUIYO MARU Tanker 7,385 16-15N, 119-43E United
States
Submarine Sunk
  1   KYOKUHO MARU Tanker 10,059 16-15N, 119-43E United
States
Submarine Sunk
  1   KOKUSEI MARU Cargo 5,396 6-30N, 116-11E United
States
Submarine Sunk
  1   HIGANE MARU Cargo 5,320 6-30N, 116-11E United
States
Submarine Sunk
  1   HIYORI MARU Cargo 5,320 6-30N, 116-11E United
States
Submarine Sunk
  2   HAVRE MARU Passenger-Cargo 5,467 6-03N, 120-59E Japan Marine Casualty Sunk
  2   TSUYAMA MARU Passenger-Cargo 6,962 21-00N, 121-46E United
States
Submarine Sunk
  2   AZUCHISAN MARU Cargo 6,888 18-25N, 120-32E United
States
Submarine Sunk
  3   NANSHIN MARU NO 14 Tanker 834 6-54N, 122-04E United
States
Army Aircraft Sunk
  4   TATEISHI MARU Passenger-Cargo 3,801 6-10N, 121-20E United
States
Army Aircraft Sunk
  4   TAIBIN MARU Cargo 6,886 15-26N, 119-49E United
States
Submarine Sunk
  5   ROKKO MARU Passenger-Cargo 3,038 23-09N, 119-58E United
States
Army Aircraft Sunk
  5   TATSUSHIRO MARU Cargo 6,886 13-01N, 120-15E United
States
Submarine Sunk
  6   AKANE MARU Tanker 10,241 19-40N, 118-05E United
States
Submarine Sunk
  6   YAMAMIZU MARU NO 2 Cargo 5,154 17-31N, 120-21E United
States
Submarine Sunk
  7   KINUGASA MARU Passenger-Cargo 8,407 14-30N, 115-48E United
States
Submarine Sunk
  7   SHINYO MARU NO 8 Cargo 1,959 17-50N, 119-37E United
States
Submarine Sunk
  7   MACASSAR MARU Passenger-Cargo 4,026 17-54N, 119-57E United
States
Submarine Sunk
  8   KOHOKU MARU Passenger-Cargo 2,573 18-32N, 116-13E United
States
Submarine Sunk
  9   TACHIBANA MARU Tanker 6,521 19-33N, 116-38E United
States
Submarine Sunk
  9   TOKUWA MARU Cargo 1,943 12-46N, 118-02E United
States
Submarine Sunk
  9   SHINKI MARU Cargo 2,211 32-08N, 129-51E United
States
Submarine Sunk
  9   HATO MARU Cargo 880e 31-10N, 122-25E United
States
Army Mine Sunk
  10   NISSHI MARU Cargo 878 37-11N, 138-18E Japan Marine Casualty Sunk
  10   FUKUURA MARU Cargo 3,177 26-13N, 127-39E United
States
Navy Carrier-
Based Aircraft
Sunk
  10   HIROTA MARU Cargo 2,211 24-26N, 125-20E United
States
Navy Carrier-
Based Aircraft
Sunk
  10   HORAI MARU Passenger-Cargo 3,198 26-38N, 127-54E United
States
Navy Carrier-
Based Aircraft
Sunk
  10   KORYU MARU Cargo 2,170 25-51N, 126-30E United
States
Navy Carrier-
Based Aircraft
Sunk

--70--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
October 10 1944 NANKAI MARU NO 1 Cargo 1,163 26-13N, 127-39E United
States
Navy Carrier-
Based Aircraft
Sunk
  10   NANYO MARU Cargo 2,218 26-13N, 127-39E United
States
Navy Carrier-
Based Aircraft
Sunk
  10   TETSUZAN MARU Cargo 2,018 26-13N, 127-39E United
States
Navy Carrier-
Based Aircraft
Sunk
  10   TAIKAI MARU Cargo 2,478 26-13N, 127-39E United
States
Navy Carrier-
Based Aircraft
Sunk
  10   JOSHU GO Cargo 1,658 25-20N, 121-32E United
States
Submarine Sunk
  10   EJIRI MARU Cargo 6,968 16-10N, 119-44E United
States
Submarine Sunk
  11   OITA MARU Cargo 711 25-40N, 121-30E United
States
Submarine Sunk
  12   MANRYO MARU Cargo 1,185 2-50N, 100-50E Great
Britain
Submarine Sunk
  12   SHINTAI MARU NO 3 Cargo 530 Off Philippine Is Unknown Unknown Sunk
  12   RYUSEI MARU Cargo 2,087 35-00N, 140-00E Japan Marine Casualty Sunk
  12   SHINAN MARU Cargo 1,278 23-22N, 120-10E United
States
Army Aircraft Sunk
  12   ASAKA MARU Converted Light Cruiser 7,398 23-30N, 119-34E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   ASAKA MARU Passenger-Cargo 4,681 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   BUJO MARU Cargo 2,270 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   GYOUN MARU Cargo 912 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   HAKKO MARU Cargo 1,132 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   HORAI MARU NO 6 Tanker 834 23-30N, 119-34E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   MITSUKI MARU Passenger-Cargo 6,440 23-30N, 119-34E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   NANSHIN MARU NO 23 Tanker 834 23-30N, 119-34E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   NANSHIN MARU NO 26 Tanker 834 23-30N, 119-34E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   NANSHIN MARU NO 5 Tanker 834e 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   NANSHIN MARU NO 11 Tanker 834e 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   NANSHIN MARU NO 20 Tanker 834e 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   NIITAKA MARU Dredge 3,244 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   YAMAHAGI MARU Cargo 5,246 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   TEISHO MARU Cargo 7,974 22-37N, 120-16E United
States
Navy Carrier-
Based Aircraft
Sunk

--71--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
October     12 1944 SHIROTAE MARU Cargo 2,812 23-30N, 119-34E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   TOKO MARU Passenger-Cargo 4,180 13-31N, 120-19E United
States
Submarine Sunk
  13   SHINSHU MARU Cargo 4,182 11-52N, 109-20E United
States
Submarine Sunk
  14   FUSHIMI MARU Cargo 2,542 16-12N, 119-45E United
States
Submarine Sunk
  14   NITTETSU MARU Cargo 5,993 6-05N, 115-55E United
States
Submarine Sunk
  14   EIKYO MARU Cargo 6,948 6-05N, 115-55E United
States
Submarine Sunk
  14   NANREI MARU Transport 2,407 11-53N, 121-39E United
States
Submarine Sunk
  16   BUNZAN MARU Cargo 1,990 22-17N, 114-10E United
States
Army Aircraft Sunk
  17   ISHIKARI MARU Cargo 830 8-02N, 93-32E Great
Britain
Navy Carrier-
Based Aircraft
Sunk
  18   NICHIZUI MARU Cargo 6,584 21-10N, 114-00E United
States
Army Aircraft Sunk
  18   HOKUREI MARU Passenger-Cargo 2,407 17-46N, 120-25E United
States
Navy Carrier-
Based Aircraft Submarine
Sunk
  18   SHIRANESAN MARU Cargo 4,739 12-37N, 118-46E United
States
Submarine Sunk
  18   TAIKAI MARU Passenger-Cargo 3,812 12-37N, 118-46E United
States
Submarine Sunk
  18   BELGIUM MARU Passenger-Cargo 5,838 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   HOEISAN MARU Passenger-Cargo 6,032 14-35N, 120-50E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   HOTEN MARU Transport 3,974 18-54N, 121-51E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   JOGU MARU Cargo 4,803 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   TSINGTAO MARU Transport 4,017 18-54N, 121-51E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   URATO MARU Passenger-Cargo 6,042 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   TEMPI MARU Cargo 6,933 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   TERUKUNI MARU Transport 3,588 18-54N, 121-51E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   SHINKO MARU Cargo 6,479 18-35N, 121-40E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   TAIHO MARU Cargo 2,720 18-54N, 121-51E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   ARABIA MARU Transport 9,480 14-06N, 119-40E United
States
Submarine Sunk
  18   CHINZEI MARU Cargo 1,999 14-06N, 119-40E United
States
Submarine Sunk
  18   HAKUSHIKA MARU Passenger-Cargo 8,150 14-06N, 119-40E United
States
Submarine Sunk
  20   UGO MARU Passenger-Cargo 3,684 4-52N, 113-24E United
States
Submarine Sunk
  20   OYO MARU Passenger-Cargo 5,458 4-41N, 113-22E United
States
Submarine Sunk
  21   NISSHO MARU NO 21 Cargo 880 41-29N, 140-15E Japan Marine Casualty Probably sunk
  21   RYOCHI MARU Cargo 2,158 11-14N, 123-44E United
States
Navy Carrier-
Based Aircraft
Sunk

--72--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
October     21 1944 DOKO MARU Cargo 2,274 12-35N, 122-16E United
States
Navy Carrier-
Based Aircraft
Sunk
  22   RYUEI MARU Tanker 2,850 13-15N, 120-19E Japan Marine Casualty Sunk
  22   TOMITSU MARU Converted Gunboat 2,933 29-20N, 129-45E United
States
Submarine Sunk
  22   MUROTO Collier 4,500e 29-20N, 129-45E United
States
Submarine Sunk
  23   KIMIKAWA MARU Converted Seaplane Tender 6,863 18-58N, 118-31E United
States
Submarine Sunk
  23   SHINSEI MARU NO 1 Passenger-Cargo 5,863 19-44N, 118-25E United
States
Submarine* Sunk
  23   TOUN MARU Cargo 1,915 24-57N, 120-25E United
States
Submarine Sunk
  23   WAKATAKE MARU Cargo 1,920 24-57N, 120-25E United
States
Submarine Sunk
  23   TATSUJU MARU Cargo 1,944 24-57N, 120-25E United
States
Submarine Sunk
  23   BYAKURAN MARU Cargo 887 35-39N, 126-05E United
States
Submarine Sunk
  24   TAIMEI MARU Cargo 989 5-50N, 118-07E United
States
Army Aircraft Sunk
  24   FUYUKAWA MARU Cargo 2,844 16-30N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  24   EIKO MARU Cargo 1,843 20-10N, 118-16E United
States
Submarine Sunk
  24   TAITEN MARU Passenger-Cargo 6,442 20-31N, 118-32E United
States
Submarine* Sunk
  24   KOKURYU MARU Passenger-Cargo 7,369 20-33N, 118-34E United
States
Submarine* Sunk
  24   KIKUSUI MARU Tanker 3,887 20-54N, 118-19E United
States
Submarine* Sunk
  24   ARISAN MARU Cargo 6,886 20-31N, 118-32E United
States
Submarine* Sunk
  24   MIKAGE MARU Cargo 2,761 33-00N, 125-49E United
States
Submarine Sunk
  24   SHIKISAN MARU Passenger-Cargo 4,725 20-27N, 118-31E United
States
Submarine Sunk
  24   TENSHIN MARU Cargo 4,236 19-31N, 118-10E United
States
Submarine Sunk
  24   IKUTAGAWA MARU Cargo 2,220 27-08N, 143-13E United
States
Submarine Sunk
  25   SHOHO MARU Tanker 834 11-18N, 119-50E United
States
Army Aircraft Sunk
  25   HAKUYO MARU Cargo 5,742 50-17N, 150-50E United
States
Submarine Sunk
  25   JINEI MARU Tanker 10,500 30-15N, 129-45E United
States
Submarine Sunk
  25   KOGEN MARU Cargo 6,600 25-06N, 119-31E United
States
Submarine Sunk
  25   MATSUMOTO MARU Cargo 7,024 25-06N, 119-31E United
States
Submarine Sunk
  26   KAIKO MARU Cargo 2,698 20-27N, 111-49E United
States
Army Aircraft Sunk
  26   NANSHIN MARU NO 31 Tanker 834e 8-22N, 116-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  26   TAKASAGO MARU NO 7 Tanker 834e 10-18N, 117-47E United
States
Submarine Sunk
  26   TAISHO MARU Cargo 6,886 19-21N, 120-50E United
States
Submarine Sunk
  26   TAIHAKU MARU Cargo 6,886 19-21N, 120-50E United
States
Submarine Sunk
  26   SEITO MARU Cargo 2,219 3-14S, 116-13E Australia Mine Sunk
  26   TAIYO MARU Cargo 4,168 19-04N, 120-36E United
States
Submarine Sunk
  27   BAIEI MARU Tanker 2,858 5-07N, 115-10E Japan Mine* Sunk
  27   NIPPO MARU Tanker 10,528 7-09N, 116-40E United
States
Submarine Sunk
  27   TOKAI MARU NO 4 Cargo 537 25-22N, 141-31E United
States
Submarine Sunk
  28   SUMATRA MARU Cargo 984 7-54N, 98-28E Great
Britain
Submarine Sunk
  29   ITSUKUSHIMA MARU Tanker 10,006 6-45N, 116-55E United
States
Navy Land-
Based Aircraft
Sunk
* Probable Agent

--73--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
October 29 1944 KOKKO MARU Cargo 2,863 1-17S, 116-48E Australia Mine Sunk
  30   KOSHO MARU Cargo 2,854 5-50N, 118-07E United
States
Army Aircraft Sunk
  30   NANSHIN MARU NO 8 Tanker 834e 5-50N, 118-07E United
States
Army Aircraft Sunk
  30   TAKANE MARU Tanker 10,021 30-14N, 132-50E United
States
Submarine Sunk
  31   KOMEI MARU Cargo 2,857 15-17N, 119-49E United
States
Submarine Sunk
  31   PACIFIC MARU Passenger-Cargo 5,872 15-17N, 119-49E United
States
Submarine Sunk
        130 Vessels 512,378        
November  1 1944 HORAI MARU NO 7 Cargo 865 13-02N, 120-17E United
States
Submarine Sunk
  1   UNKAI MARU NO 12 Cargo 2,745 12-54N, 120-10E United
States
Submarine Sunk
  1   ASAMA MARU Transport 16,975 20-09N, 117-38E United
States
Submarine Sunk
  2   HACHIJIN MARU Cargo 1,918 00-48N, 107-43E Great
Britain
Submarine Sunk
  2   NOTO MARU Cargo 7,191 10-30N, 125-00E United
States
Army Aircraft Sunk
  2   ATLAS MARU Passenger-Cargo 7,347 20-20N, 121-30E United
States
Submarine Sunk
  2   HAMBURG MARU Passenger-Cargo 5,271 20-20N, 121-30E United
States
Submarine Sunk
  2   KURAMASAN MARU Cargo 1,995 4-30S, 118-20E United
States
Submarine Sunk
  3   TAIMEI MARU Cargo 6,923 5-48N, 111-05E United
States
Submarine Sunk
  4   KAGU MARU Passenger-Cargo 6,806 15-54N, 119-45E United
States
Submarine Sunk
  6   MARIFU MARU Tanker 5,135 14-25N, 120-30E United
States
Navy Carrier-
Based Aircraft
Sunk
  6   SHINO MARU Cargo 513 13-30N, 123-02E United
States
Navy Land-
Based Aircraft
Sunk
  7   KIRI MARU NO 8 Cargo 939 34-32N, 138-33E United
States
Submarine Sunk
  7   KOTAI MARU Tanker 975 34-32N, 138-33E United
States
Submarine Sunk
  8   KEIJO MARU Cargo 1,051 31-09N, 129-38E United
States
Submarine Sunk
  8   HAKKO MARU Cargo 1,948 31-09N, 129-38E United
States
Submarine Sunk
  8   NICHINAN MARU NO 2 Tanker 5,226 13-46N, 116-53E United
States
Submarine Sunk
  8   SHIMOTSU MARU Tanker 2,854 14-01N, 117-17E United
States
Submarine Sunk
  8   MANEI MARU Tanker 5,226 13-53N, 119-26E United
States
Submarine Sunk
  9   CHOJUSAN MARU Converted Gunboat 2,131 31-17N, 129-10E United
States
Submarine Sunk
  9   HISHI MARU NO 2 Tanker 856 12-27N, 120-05E United
States
Submarine Sunk
  10   KASHII MARU Passenger-Cargo 8,407 10-50N, 124-35E United
States
Army Aircraft Sunk
  10   TAKATSU MARU Cargo 5,350 10-50N, 124-35E United
States
Army Aircraft Sunk
  10   GOKOKU MARU Converted Light Cruiser 10,438 33-23N, 129-03E United
States
Submarine Sunk
  11   SAIHO MARU Passenger-Cargo 4,639 10-50N, 124-35E United
States
Naval Carrier-
Based Aircraft
Sunk
  11   MIKASA MARU Passenger-Cargo 3,143 10-50N, 124-35E United
States
Naval Carrier-
Based Aircraft
Sunk
  11   TENSHO MARU Passenger-Cargo 5,013 10-50N, 124-35E United
States
Naval Carrier-
Based Aircraft
Sunk
  11   TAIZAN MARU Cargo 3,528 10-50N, 124-35E United
States
Naval Carrier-
Based Aircraft
Sunk
  12   ATSUTA MARU Cargo 2,750 11-03N, 119-12E United
States
Naval Land-
Based Aircraft
Sunk

--74--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November   12 1944 NARUO MARU Cargo 4,823 31-29N, 125-19E United
States
Submarine Sunk
  12   TATSUAKI MARU Cargo 2,766 31-18N, 125-30E United
States
Submarine Sunk
  13   AOKI MARU Cargo 3,710 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   DAITOKU MARU Cargo 6,923 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   EIKYU MARU Cargo 6,862 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   EIWA MARU Cargo 6,968 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   HATSU MARU Cargo 4,260 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   HEIAN MARU Passenger-Cargo 5,346 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   KAKOGAWA MARU Cargo 6,886 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   KINKA MARU Passenger-Cargo 9,305 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   ONDO Tanker 6,500 14-29N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   SEIWA MARU Passenger-Cargo 7,210 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   SEKIHO MARU Cargo 5,402 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   MURO MARU Cargo 1,606 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   MYOGI MARU Passenger-Cargo 4,020 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   NISHI MARU Cargo 2,655 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   TATSUURA MARU Passenger-Cargo 6,420 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   TEIYU MARU Cargo 5,753 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  13   SHINKOKU MARU Cargo 2,746 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  14   AYAGIRI MARU Tanker 2,854 12-40N, 120-40E United
States
Navy Carrier-
Based Aircraft
Sunk
  14   HORAI MARU NO 5 Tanker 834 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  14   SUGIYAMA MARU Cargo 4,379 15-14N, 112-13E United
States
Submarine Sunk
  14   MISAKI MARU Cargo 4,422 15-14N, 112-13E United
States
Submarine Sunk
  14   UNKAI MARU NO 5 Tanker 2,841 17-57N, 117-45E United
States
Submarine Sunk
  14   GYOKUYO MARU Cargo 5,396 31-04N, 123-56E United
States
Submarine Sunk

--75--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November   14 1944 NICHIEI MARU Cargo 5,396 11-19N, 109-01E United
States
Submarine Sunk
  14   YUTAKA MARU Cargo 2,704 12-40N, 120-40E United
States
Submarine
Navy Carrier-
Based Aircraft
Sunk
  15   CELEBES MARU Passenger-Cargo 5,863 13-17N, 122-28E United
States
Navy Land-
Based Aircraft
Sunk
  15   AKITSU MARU Aircraft Ferry 9,186 33-15N, 128-10E United
States
Submarine Sunk
  15   YUZAN MARU NO 2 Cargo 6,859 11-20N, 109-03E United
States
Submarine Sunk
  16   KYOEI MARU Tanker 602 3-30N, 117-30E United
States
Army Aircraft Sunk
  16   KISARAGI MARU Cargo 875 28-56N, 141-59E United
States
Submarine Sunk
  17   MAYASAN MARU Passenger-Cargo 9,433 33-16N, 124-43E United
States
Submarine Sunk
  17   EDOGAWA MARU Cargo 6,968 33-31N, 124-32E United
States
Submarine Sunk
  17   SHUNTEN MARU Passenger-Cargo 5,623 16-56N, 110-30E United
States
Submarine Sunk
  18   AISAKASAN MARU Cargo 6,923 33-50N, 124-44E United
States
Submarine Sunk
  18   CHINKAI MARU Cargo 2,827 33-39N, 124-26E United
States
Submarine Sunk
  18   SEISHO MARU Passenger-Cargo 5,463 33-36N, 124-18E United
States
Submarine Sunk
  19   NICHINAN MARU Cargo 1,945 1-36N, 102-53E Great
Britain
Submarine* Sunk
  19   NATSUKAWA MARU Cargo 4,500 5-20N, 115-13E United
States
Army Aircraft Sunk
  19   ESASHI MARU Cargo 6,923 16-50N, 120-08E United
States
Navy Carrier-
Based Aircraft
Sunk
  19   SEIAN MARU Passenger-Cargo 3,712 14-48N, 120-17E United
States
Navy Carrier-
Based Aircraft
Sunk
  19   UNKNOWN MARU Tanker 2,800e 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  19   SHINKO MARU NO 1 Cargo 1,200 19-00N, 111-51E United
States
Submarine Sunk
  20   DAICHI MARU Passenger-Cargo 1,280 31-57N, 122-18E United
States
Army Aircraft Sunk
  21   FUKUREI MARU Cargo 1,398 38-08N, 124-39E Japan Marine Casualty Sunk
  21   GYOSAN MARU Cargo 5,698 10-39N, 115-05E United
States
Submarine Sunk
  22   NANSHIN MARU NO 2 Tanker 834e 1-00S, 104-28E Japan Marine Casualty Sunk
  22   DOWA MARU Cargo 1,916 10-22N, 114-21E United
States
Submarine Sunk
  23   HOZAN MARU Transport 2,345 24-26N, 122-46E United
States
Submarine* Sunk
  23   SHUYO MARU Cargo 6,933 34-15N, 128-58E United
States
Submarine Sunk
  23   FUKUJU MARU Passenger-Cargo 5,291 34-19N, 128-05E United
States
Submarine Sunk
  23   GOSHUN MARU Cargo 2,300e 37-51N, 124-37E Japan Mine* Sunk
  23   SAKAE MARU Cargo 2,878 24-12N, 122-53E United
States
Submarine* Sunk
  23   AMAKUSA MARU Passenger-Cargo 2,340 24-24N, 122-45E United
States
Submarine* Sunk
  25   BANEI MARU NO 6 Cargo 1,191 16-37N, 120-19E United
States
Navy Carrier-
Based Aircraft
Sunk
  25   KASAGISAN MARU Passenger-Cargo 2,427 16-37N, 120-19E United
States
Navy Carrier-
Based Aircraft
Sunk
  25   SHOHO MARU Cargo 1,356 20-18N, 121-34E United
States
Submarine Sunk
  25   MANILA MARU Passenger-Cargo 9,486 5-30N, 113-21E United
States
Submarine Sunk
*Probable Agent

--76--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
November   25 1944 SANTOS MARU Cargo 7,266 20-12N, 121-51E United
States
Submarine Sunk
  26   YUHO MARU Tanker 5,226 4-55N, 114-06E United
States
Submarine Sunk
  27   NANKO MARU NO 6 Cargo 834 Yellow Sea Unknown Unknown Sunk
  28   ATAGO MARU Tanker 7,543 4-29N, 114-00E United
States
Army Aircraft Sunk
  29   SHINETSU MARU Cargo 2,212 10-47N, 124-17E United
States
Army Aircraft Sunk
  29   SHINSHO MARU Cargo 2,880 11-01N, 124-37E United
States
Army Aircraft Sunk
  29   DAIBOSHI MARU NO 6 Cargo 3,925 37-17N, 125-11E United
States
Submarine Sunk
  30   KUMANO MARU Converted Net Tender 872 1-30N, 103-00E Great
Britain
Submarine* Sunk
  30   DAIREN MARU Transport 3,748 38-06N, 124-39E United
States
Submarine Sunk
        97 Vessels 421,026        
December 2 1944 AKIGAWA MARU Cargo 6,859 30-51N, 128-45E United
States
Submarine Sunk
  2   HAWAII MARU Passenger-Cargo 9,467 30-51N, 128-45E United
States
Submarine Sunk
  3   NANSHIN MARU NO 18 Tanker 834e 5-55N, 116-12E United
States
Navy Land-
Based Aircraft
Sunk
  3   NANSHIN MARU NO 13 Tanker 834e 1-22S, 117-03E United
States
Navy Land-Based
Aircraft
Sunk
  4   HAKKO MARU Tanker 10,022 13-12N, 116-37E United
States
Submarine Sunk
  4   SHINTO MARU Cargo 1,215 22-35N, 120-30E United
States
*Unknown Aircraft Sunk
  6   BANSHU MARU NO 31 Cargo 748 18-54N, 120-49E United
States
Submarine Sunk
  6   JINYO MARU Cargo 6,862 18-54N, 120-49E United
States
Submarine Sunk
  6   FUKUYO MARU Cargo 5,463 18-59N, 121-05E United
States
Submarine* Sunk
  6   YASUKUNI MARU Cargo 5,794 18-51N, 121-07E United
States
Submarine, Navy Carrier-
Based Aircraft
Sunk
  6   KENJO MARU Cargo 6,933 18-57N, 120-58E United
States
Submarine* Sunk
  7   HAKUBA MARU Passenger-Cargo 2,858 11-23N, 124-18E United
States
Army Aircraft
Marine Land-
Based Aircraft
Sunk
  7   AKAGISAN MARU Passenger-Cargo 4,634 11-23N, 124-18E United
States
Army Aircraft
Marine Land-
Based Aircraft
Sunk
  7   SHINSEI MARU NO 5 Cargo 2,599 11-23N, 124-18E United
States
Army Aircraft
Marine Land-
Based Aircraft
Sunk
  7   NICHIYO MARU Cargo 6,300 11-23N, 124-18E United
States
Army Aircraft
Marine Land-
Based Aircraft
Sunk
  8   SHOEI MARU Tanker 2,854 4-03N, 111-31E United
States
Submarine Sunk
  11   MINO MARU Cargo 4,667 11-20N, 124-10E United
States
Army Aircraft
Marine Land-
Based Aircraft
Sunk
  11   TASMANIA MARU Cargo 4,106 11-20N, 124-10E United
States
Army Aircraft
Marine Land-
Based Aircraft
Sunk
  11   SHONAN MARU Cargo 1,120 12-42N, 122-10E United
States
Navy Land-
Based Aircraft
Sunk
* Probable Agent

--77--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
December 14 1944 UNKAI MARU NO 2 Cargo 1,713 Japan Sea Unknown Unknown Probably sunk
  14   NIKKO MARU NO 1 Cargo 852 14-48N, 120-16E United
States
Navy Carrier-
Based Aircraft
Sunk
  15   ORYOKU MARU Transport 7,365 14-45N, 120-13E United
States
Navy Carrier-
Based Aircraft
Sunk
  15   RISEN MARU Cargo 6,436 14-35N, 120-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  16   SHOEI MARU Converted Gunboat 1,986 5-45S, 104-43E Great
Britain
Submarine Sunk
  16   JUSAN MARU Cargo 2,111 27-35N, 141-35E United
States
Submarine Sunk
  19   GYOSHIN MARU Tanker 2,854 3-14N, 103-40E Japan Marine Casualty Sunk
  19   HIDA MARU Cargo 5,320 22-17N, 114-10E United
States
Army Aircraft Sunk
  19   SHINFUKU MARU Cargo 2,204 13-40N, 115-50E United
States
Navy Land-
Based Aircraft
Sunk
  19   HIROSHI MARU NO 3 Cargo 940 44-56N, 147-39E Unknown Submarine Sunk
  20   YAEI MARU NO 6 Tanker 834 1-07S, 104-34E Japan Marine Casualty Sunk
  20   SHOEKI MARU Converted Net Tender 898 7-00S, 120-00E Netherlands Aircraft Sunk
  20   MAMIYA Collier 7,000e 17-48N, 114-09E United
States
Submarine Sunk
  22   OMUROSAN MARU Tanker 9,204 15-04N, 109-06E United
States
Submarine Sunk
  22   OTOWASAN MARU Tanker 9,204 15-04N, 109-06E United
States
Submarine Sunk
  22   ARITA MARU Tanker 10,238 15-04N, 109-06E United
States
Submarine Sunk
  23   KENZUI MARU Cargo 4,156 16-50N, 120-18E United
States
Submarine Sunk
  25   JUNPO MARU Cargo 4,277 1-10N, 108-20E United
States
Submarine Sunk
  27   DAICHO MARU Cargo 1,135 6-06S, 106-53E Japan Marine Casualty Sunk
  28   NOZAKI Collier 1,000e 12-39N, 109-30E United
States
Submarine Sunk
  30   AOBASAN MARU Cargo 8,811 17-18N, 119-25E United
States
Army Aircraft Sunk
  30   MURORAN MARU Cargo 5,374 17-18N, 119-25E United
States
Army Aircraft Sunk
  30   TEIKAI MARU Cargo 7,691 17-18N, 119-25E United
States
Army Aircraft Sunk
  31   UNRYU MARU Cargo 2,515 11-40N, 93-15E Great
Britain
Submarine Sunk
        43 Vessels 188,287        
January 1 1945 KYOKKO MARU Cargo 593 12-26N, 98-38E Great
Britain
Mine Sunk
  2   HAKKA MARU Cargo 889 16-37N, 120-19E United
States
Army Aircraft Sunk
  2   HISHIGATA MARU Cargo 2,833 16-37N, 120-19E United
States
Army Aircraft Sunk
  2   MEIRYU MARU Cargo 4,739 16-37N, 120-19E United
States
Army Aircraft Sunk
  2   TAISHIN MARU Cargo 534 17-00N, 120-19E United
States
Army Aircraft Sunk
  3   IWATO MARU Cargo 526 24-36N, 121-50E United
States
Navy Carrier-
Based Aircraft
Sunk
  3   KINREI MARU Cargo 1,300 25-09N, 121-47E United
States
Navy Carrier-
Based Aircraft
Sunk
  3   YAEI MARU Cargo 1,941 30-29N, 142-03E United
States
Submarine Sunk
  3   SHIBAZONO MARU Passenger-Cargo 1,831 30-29N, 142-03E United
States
Submarine Sunk
  3   SHINSHU MARU Aircraft Ferry 8,170 21-57N, 119-44E United
States
Navy Carrier-
Based Aircraft
Submarine
Sunk
  5   SHOTO MARU Cargo 572 Off Bonin Island United
States
Unknown Sunk

--78--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January 5 1945 SHUNSEN MARU Cargo 971 5-00S, 112-16E United
States
Submarine Sunk
  5   KANKO MARU Converted Net Tender 909 5-00S, 112-16E United
States
Submarine Sunk
  6   NITTEI MARU Cargo 2,787 37-00N, 136-00E Japan Marine Casualty Sunk
  6   NANSHIN MARU NO 10 Tanker 834e 18-00N, 120-25E United
States
Navy Carrier-
Based Aircraft
Sunk
  6   KYODO MARU Tanker 1,090 18-08N, 120-35E United
States
Navy Carrier-
Based Aircraft
Sunk
  6   KYOEI MARU NO. 10 Tanker 1,180 18-08N, 120-35E United
States
Navy Carrier-
Based Aircraft
Sunk
  6   KYOEI MARU NO. 6 Tanker 1,178 18-08N, 120-35E United
States
Navy Carrier-
Based Aircraft
Sunk
  6   NICHIEI MARU Tanker 10,020 6-57N, 102-57E United
States
Submarine Sunk
  6   TARAKAN MARU Tanker 5,135 19-40N, 111-24E United
States
Submarine Sunk
  7   SHINSEI MARU Cargo 4,740 22-40N, 118-45E United
States
Army Aircraft Sunk
  8   SEIKAI MARU NO. 2 Cargo 550 26-35N, 142-08E United
States
Army Mine Sunk
  8   DAIGO MARU Cargo 5,244 34-28N, 122-39E United
States
Submarine Sunk
  8   SHINYO MARU Cargo 5,892 24-31N, 120-28E United
States
Submarine Sunk
  8   ANYO MARU Passenger-Cargo 9,256 24-54N, 120-26E United
States
Submarine Sunk
  8   SANYO MARU Tanker 2,854 24-54N, 120-26E United
States
Submarine* Sunk
  8   HIKOSHIMA MARU Tanker 2,854 24-37N, 120-30E United
States
Submarine Sunk
  9   SHINKO MARU NO. 1 Converted Gunboat 934 3-46S, 111-54E Netherlands Submarine Sunk
  9   FUKUYAMA MARU Cargo 6,040 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  9   HISAGAWA MARU Cargo 6,886 23-04N, 119-57E United
States
Navy Carrier-
Based Aircraft
Sunk
  9   KAIHO MARU Tanker 10,239 22-47N, 120-11E United
States
Navy Carrier-
Based Aircraft
Sunk
  9   NANSHIN MARU NO 4 Tanker 834e 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   AKASHI MARU Tanker 10,045 10-20N, 107-05E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   AYANAMI MARU Tanker 2,864 10-46N, 106-42E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   AYAYUKI MARU Tanker 2,854 11-10N, 108-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   BANSHU MARU NO. 63 Tanker 533 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   CHEFO MARU Passenger-Cargo 3,218 10-46N, 106-42E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   DAIKYU MARU Cargo 1,517 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   EIHO MARU Tanker 5,209 11-10N, 108-55E United
States
Navy Carrier-
Based Aircraft
Sunk
* Probable Agent

--79--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January 12 1945 EIMAN MARU Tanker 6,968 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   FRANCE MARU Passenger-Cargo 5,828 9-10N, 107-00E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   HORAI MARU NO 9 Tanker 834 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   IKUTAGAWA MARU Cargo 4,013 10-46N, 106-42E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   KANJU MARU Transport 7,267 10-46N, 106-42E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   KENEI MARU Cargo 4,815 10-46N, 106-42E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   KENSEI MARU Cargo 4,646 11-10N, 108-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   KIYO MARU Passenger-Cargo 4,428 10-46N, 106-42E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   KOSHIN MARU Tanker 2,855 11-10N, 108-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   OTSUYAMA MARU Cargo 6,857 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   RYUSHO MARU Tanker 2,863 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   SAN LUIS MARU Tanker 7,268 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   NANRYU MARU NO 2 Tanker 834 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   KUMAGAWA MARU Passenger-Cargo 7,508 10-20N, 107-05E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   KYOEI MARU NO 7 Cargo 1,160 9-24N, 106-48E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   KYOKUUN MARU Tanker 10,045 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   TOYU MARU Cargo 4,532 11-10N, 108-55E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   YOSHU MARU Cargo 5,711 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   YUSEI MARU Cargo 600 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   TATEBE MARU Cargo 4,519 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   TATSUBATO MARU Cargo 5,396 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   SHINGI MARU Cargo 6,888 9-10N, 107-00E United
States
Navy Carrier-
Based Aircraft
Sunk

--80--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January 12 1945 SHINSEI MARU Cargo 2,880 10-20N, 107-05E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   SHINSEI MARU NO 17 Passenger-Cargo 2,556 10-46N, 106-42E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   SHOEI MARU Cargo 2,764 14-15N, 109-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  12   TAIPOSEK Cargo 1,960 10-46N, 106-42E United
States
Navy Carrier-
Based Aircraft
Sunk
  14   AKATSUKI MARU Cargo 910 29-00N, 116-00E United
States
Army Aircraft Sunk
  15   MIRII MARU Tanker 10,564 22-45N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  16   DOSEI MARU Cargo 10,893 22-20N, 114-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  16   ANRI GO NO 2 Cargo 1,026 22-20N, 114-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  16   HARIMA MARU Tanker 10,045 18-11N, 109-33E United
States
Navy Carrier-
Based Aircraft
Sunk
  16   SANKO MARU Tanker 5,948 22-20N, 114-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  16   MATSUSHIMA MARU Tanker 10,488 22-20N, 114-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  16   TENEI MARU Tanker 10,241 22-20N, 114-10E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   REIZAN MARU Passenger-Cargo 3,426 30-11N, 115-07E United
States
Army Mine Sunk
  20   SHURI MARU Motor Torpedo Boat Tender 1,857 33-37N, 128-40E United
States
Submarine Sunk
  21   HARUTA MARU Cargo 1,500 22-20N, 114-10E United
States
Army Aircraft Sunk
  21   EIHO MARU Tanker 5,068 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  21   HOEI MARU NO 3 Tanker 865e 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  21   MUNAKATA MARU Tanker 10,045 25-09N, 121-45E United
States
Navy Carrier-
Based Aircraft
Sunk
  21   NICHIYU MARU NO 2 Cargo 6,859 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  21   MANJU MARU Tanker 6,515 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  21   KUROSHIO MARU Tanker 10,518 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  21   YAMAZAWA MARU Cargo 6,889 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  21   TEIFU MARU Passenger-Cargo 7,110 22-37N, 121-15E United
States
Navy Carrier-
Based Aircraft
Sunk

--81--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
January 21 1945 SHINCHO MARU Tanker 5,135 22-37N, 120-15E United
States
Navy Carrier-
Based Aircraft
Sunk
  22   HIKOSAN MARU Cargo 2,073 26-39N, 127-53E United
States
Navy Carrier-
Based Aircraft
Sunk
  23   HOZAN MARU NO 1 Tanker 868 4-08N, 98-15E Great
Britain
Mine Sunk
  23   NIKKAKU MARU Cargo 1,946 4-08N, 98-15E Great
Britain
Mine Sunk
  23   TAIKYO MARU Cargo 5,244 27-04N, 120-27E United
States
Submarine Sunk
  24   YONEYAMA MARU NO 1 Cargo 584 24-50N, 141-22E United
States
Surface Craft Sunk
  24   TAIMAN MARU NO 1 Cargo 6,888 36-47N, 123-59E United
States
Submarine Sunk
  25   BEIJU MARU Converted Water Carrier 539 25-09N, 121-45E United
States
Navy Land-
Based Aircraft*
Probably sunk
  25   MALAY MARU Cargo 4,556 31-18N, 130-08E United
States
Submarine Sunk
  26   TAMON MARU NO 15 Cargo 6,925 13-34N, 109-17E United
States
Navy Mine Sunk
  27   HSIN YANG MARU Cargo 1,674 29-40N, 115-52E United
States
Army Mine Sunk
  27   RYUZAN MARU Passenger-Cargo 2,482 29-46N, 116-52E United
States
Army Mine Sunk
  28   SANUKI MARU Converted Seaplane Tender 7,158 33-56N, 123-06E United
States
Submarine Sunk
  29   CLYDE MARU Passenger-Cargo 5,497 25-33N, 120-54E United
States
Submarine Sunk
  30   ISSEI MARU Passenger-Cargo 1,864 33-30N, 135-31E United
States
Submarine Sunk
  31   TAIETSU MARU Cargo 6,890 14-55N, 109-01E United
States
Army Aircraft, Submarine Sunk
  31   ENKI MARU Cargo 6,968 14-55N, 109-01E United
States
Submarine Sunk
        101 Vessels 434,648        
February 1 1945 SHIRETOKO Tanker 6,500 1-20N, 109-50E United
States
Army Aircraft Sunk
  1   NISSHO MARU NO 16 Converted Submarine Chaser 1,173 35-00N, 125-00E Japan Mine Sunk
  2   KATSUURA MARU Passenger-Cargo 1,735 25-37N, 119-47E Japan Marine Casualty Sunk
  2   NANSHIN MARU NO 19 Tanker 834e 5-40N, 103-17E United
States
Submarine Sunk
  3   NISSEI MARU Cargo 833 Japan Sea Unknown Unknown Probably sunk
  3   NANRYU MARU NO 3 Tanker 834e 24-28N, 118-13E United
States
Navy Land-
Based Aircraft
Sunk
  4   TAIRAI MARU Passenger-Cargo 4,273 37-18N, 125-22E United
States
Submarine Sunk
  6   KINYU MARU NO 3 Cargo 834 12-50N, 109-23E United
States
Army Aircraft Sunk
  6   OEI MARU Tanker 2,858 1-00N, 103-36E United
States
Army Mine Sunk
  6   ENGEN MARU Cargo 6,968 6-29N, 106-11E United
States
Submarine Sunk
  6   SHOHEI MARU Passenger-Cargo 1,092 38-44N, 121-23E United
States
Submarine Sunk
  7   TAIGYO MARU Cargo 6,892 7-03N, 106-05E United
States
Submarine Sunk
  7   OKINOYAMA MARU Cargo 984 29-09N, 129-45E United
States
Submarine Sunk
  8   EIFUKU MARU Passenger-Cargo 3,520 7-04N, 104-46E United
States
Submarine Sunk
  9   HEKISUI MARU Cargo 572 23-28N, 119-40E United
States
Navy Land-
Based Aircraft
Sunk
  10   WAKA MARU Cargo 2,036 35-40N, 126-20E Japan Marine Casualty Sunk
  14   YAMANAMI MARU Cargo 882 33-56N, 131-00E Japan Mine Sunk
* Probable Agent

--82--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
February 16 1945 IIDA MARU Cargo 1,105 10-20N, 107-06E United
States
Navy Land-
Based Aircraft
Sunk
  17   DAIBI MARU Cargo 531 27-05N, 142-12E United
States
Navy Carrier-
Based Aircraft
Sunk
  17   YAMASHITA MARU Cargo 10,605 35-22N, 139-37E United
States
Navy Carrier-
Based Aircraft
Sunk
  20   DAIZEN MARU Cargo 5,396 00-42S, 106-18E United
States
Submarine Sunk
  20   EIYO MARU Tanker 8,673 11-17N, 109-00E United
States
Submarine Sunk
  21   FUKUSEI MARU Cargo 1,232 41-00N, 142-00E Japan Marine Casualty Sunk
  21   TAIRIKU MARU Cargo 2,325 35-24N, 125-23E United
States
Submarine Sunk
  22   TATEKAWA MARU NO 2 Tanker 10,000 11-08N, 108-44E United
States
Army Aircraft Army Mine Sunk
  22   NICHIYOKU MARU Tanker 1,945 11-28N, 109-06E United
States
Submarine Sunk
  24   YULIN MARU Cargo 1,893 13-48N, 109-14E Japan Marine Casualty Sunk
  24   KYURYU MARU Cargo 1,339 13-45N, 100-35E Great
Britain
Mine Sunk
  24   TATSUMOMO MARU Cargo 880e 32-40N, 132-33E United
States
Submarine Sunk
  24   USUKI MARU Cargo 875e 33-58N, 136-18E United
States
Submarine Sunk
  25   KOHO MARU Cargo 850 20-04N, 111-22E United
States
Submarine Sunk
  26   TAKASAGO MARU NO 9 Tanker 834 20-01N, 111-44E United
States
Army Aircraft Sunk
  26   AMATO MARU Tanker 10,238 11-57N, 109-18E United
States
Submarine Sunk
        33 Vessels 101,541        
March    1 1945 EIJO MARU Cargo 6,862 36-09N, 120-30E Japan Marine Casualty Sunk
  1   CHOHAKUZAN MARU Converted Gunboat 2,132 26-30N, 127-30E United
States
Navy Carrier-
Based Aircraft
Sunk
  1   KINZAN MARU Cargo 2,220 28-24N, 129-30E United
States
Navy Carrier-
Based Aircraft
Sunk
  1   RYUYU MARU Cargo 731 28-09N, 129-19E United
States
Navy Carrier-
Based Aircraft
Sunk
  1   SEKIYO MARU Cargo 629 26-13N, 127-41E United
States
Navy Carrier-
Based Aircraft
Sunk
  1   LUZON MARU Passenger-Cargo 1,679 28-24N, 129-30E United
States
Navy Carrier-
Based Aircraft
Sunk
  1   TOYOSAKA MARU Cargo 1,966 24-46N, 125-30E United
States
Navy Carrier-
Based Aircraft
Sunk
  1   HOSHI MARU NO 11 Cargo 1,944 26-13N, 127-41E United
States
Navy Carrier-
Based Aircraft
Sunk
  1   DAISHIN MARU Cargo 1,306 26-30N, 127-30E United
States
Navy Carrier-
Based Aircraft
Sunk
  1   TAIKEN MARU Cargo 2,220e 24-45N, 125-20E United
States
Navy Carrier-
Based Aircraft
Sunk

--83--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
March    1 1945 TATEYAMA MARU Cargo 1,148 34-11N, 139-43E United
States
Submarine Sunk
  2   KASEI MARU Cargo 2,220 Off Japan Unknown Unknown Sunk
  2   EISHO MARU Tanker 2,850 18-32N, 108-11E United
States
Army Aircraft Sunk
  2   HOKUHI MARU Cargo 1,500 23-35N, 119-35E United
States
Army Aircraft Sunk
  2   NICHIRIN MARU Cargo 1,020 27-10N, 124-35E United
States
Navy Land-
Based Aircraft
Sunk
  3   YAEI MARU NO 1 Cargo 834 20-10N, 109-31E United
States
Army Aircraft Sunk
  3   SUITEN MARU Cargo 2,500 6-29S, 112-48E United
States
Submarine Sunk
  3   NISSHO MARU NO 2 Converted Gunboat 1,386 34-05N, 139-54E United
States
Submarine Sunk
  4   PALEMBANG MARU Tanker 5,236 12-52N, 109-30E United
States
Submarine Sunk
  5   SHOTO MARU Cargo 887 15-32N, 108-37E United
States
Army Aircraft Sunk
  5   RYOEI MARU Tanker 10,016 16-46N, 108-41E United
States
Submarine Sunk
  5   SHOYU MARU Cargo 853 5-42S, 114-02E United
States
Submarine Sunk
  5   NAGARA MARU Cargo 856 5-41S, 114-01E United
States
Submarine Sunk
  5   MANYO MARU Converted Gunboat 2,904 5-56S, 113-45E United
States
Submarine Sunk
  6   RIKKO MARU Tanker 9,181 25-09N, 121-44E Japan Marine Casualty Sunk
  6   HOKUSUI MARU Cargo 3,944 41-27N, 140-15E Japan Mine* Sunk
  6   SEIKAN MARU NO 5 Transport 2,792 40-50N, 140-45E Japan Mine Sunk
  7   HOYO MARU Cargo 946 13-00N, 98-00E United
States
Army Aircraft Sunk
  8   TANGYANG MARU Passenger-Cargo 1,573 30-33N, 114-17E United
States
Army Aircraft Sunk
  8   ISHIMA MARU Cargo 839 22-34N, 114-53E United
States
Army Aircraft Sunk
  10   SEISHIN MARU Tanker 5,239 16-02N, 108-20E United
States
Army Aircraft Sunk
  10   KEIZAN MARU Cargo 2,116 29-31N, 127-55E United
States
Submarine Sunk
  10   SANKA MARU Cargo 2,495 29-31N, 127-55E United
States
Submarine Sunk
  10   DOKAN MARU Cargo 2,270 29-31N, 127-55E United
States
Submarine Sunk
  11   WAYO MARU Converted Water Carrier 2,726 21-38N, 114-06E United
States
Navy Land-
Based Aircraft
Sunk
  11   KOKO MARU Cargo 1,520 31-22N, 121-34E United
States
Army Mine* Sunk
  11   SHORI MARU Cargo 3,087 34-29N, 127-55E United
States
Submarine Sunk
  13   MASASHIMA MARU Cargo 2,742 23-30N, 117-10E United
States
Army Aircraft Sunk
  16   NANRYU MARU NO 1 Tanker 834e 29-07N, 122-01E United
States
Navy Land-
Based Aircraft
Sunk
  17   IKOMASAN MARU Passenger-Cargo 3,173 26-08N, 119-56E United
States
Navy Carrier-
Based Aircraft
Submarine
Sunk
  17   NAGASAKI MARU NO 3 Cargo 873 33-33N, 129-53E Japan Marine Casualty Sunk
  17   BANSEI MARU Cargo 3,120 31-19N, 121-45E United
States
Army Mine Sunk
  17   SAMUI Tanker 1,458 5-18N, 103-23E United
States
Submarine Sunk
  17   NANKING MARU Passenger-Cargo 3,005 25-34N, 120-01E United
States
Submarine Sunk
  18   KENYO MARU Cargo 2,217 31-35N, 130-40E United
States
Navy Carrier-
Based Aircraft
Sunk
  18   NANSEI MARU NO 1 Tanker 834 31-35N, 130-40E United
States
Navy Carrier-
Based Aircraft
Sunk
* Probable Agent

--84--

Date Name of Vessel Type of Vessel Standard
Tonnage
Location Flag of Agent Type of Agent Assessment
March    18 1945 TSUKUSHI MARU NO 3 Cargo 1,012 28-05N, 126-44E United
States
Submarine* Sunk
  19   SARAWAK MARU Tanker 5,135 1-20N, 104-34E United
States
Army Mine Sunk
  19   KOZAN MARU Cargo 3,923 32-05N, 119-56E United
States
Army Mine Sunk
  19   HAKOZAKI MARU Transport 10,413 33-09N, 122-08E United
States
Submarine Sunk
  20   FUKUSEI MARU Cargo 500e 23-45N, 117-38E United
States
Army Aircraft Sunk
  20   HEISHIN MARU Cargo 1,577 23-45N, 117-38E United
States
Army Aircraft Sunk
  20   YAMAKUNI MARU Cargo 500 11-17N, 108-55E United
States
Submarine Sunk
  20   NANSHIN MARU NO 21 Tanker 834 11-17N, 108-55E United
States
Submarine Sunk
  20   HOSEN MARU Cargo 1,039 11-17N, 108-55E United
States
Submarine Sunk
  21   FUSHIMI MARU NO 2 Cargo 779 11-50N, 109-18E United
States
Army Aircraft Sunk
  21   TAKASAGO MARU NO 6 Tanker