Considerable damage was done by one bomb, of apparently about the same size as the two forward ones on the Forecastle, which struck the deck just forward of the port A.A. director, coming down at an angle of about 30° to the perpendicular, from about 3 points forward of the port beam. This bomb continued downward through the port wing of the Navigation Bridge, and the Signal Bridge, penetrating into Casemate 6. There was no damage sustained to any part of the mast structure above the Sky Control Shack. Sky Control Shack was completely burned out, very little being salvaged from it. Sky Control deck was punctured in several places from metal fragments from below and the starboard side is badly warped from the fire below. Apparently no damage of any kind was sustained by any of the three mast supports. The only damage suffered by port A.A. director, except for broken glass, appears to come from external heat, and this is very minor. The stack structure above the Boat Deck has suffered very little; mostly holes caused by an exploding 5" A.A. Ammunition Ready Box at about frame 67 on the starboard side just outboard of the stack.
This bomb was apparently 12 inches in diameter, and it hit the Sky Control Deck at frame 62 port, about 6 feet outboard of a point where the port after tripod pierces the Sky Control Deck just above and outboard of the chart house. Range V (Forward Rangefinder) is apparently undamaged, but the deck aft of it is warped slightly by heat. The Navigation Bridge structure was completely burned out from below. The deck of the Navigation Bridge is deflected downward considerably at the vicinity of the wheel. There is also a burned out part of the deck inside the Navigation Bridge aft and to starboard of the forward mast support. Nothing of any value remains in the Navigation Bridge. The heat of the fire from below apparently caused the deck of the Navigation Bridge inside of the Chart House to burn completely through and fall clear leaving a hole the size of the interior of the Chart House plus about three feet further to starboard and all the way aft. The rest of the deck to starboard is badly warped, and although the starboard after tripod leg is very badly burnt externally, it does not appear to have suffered any structural damage or deflection. The starboard bridge gyro repeater and pelorous has been practically destroyed by fire. Absolutely nothing remains of the Chart House, except a partial shell. The Conning Tower structure has suffered no damage.
The bomb hit just forward of the port A.A. director penetrated through the Navigation Bridge, the Signal Bridge, the Boat Deck inside of the Captain's Office and exploded on the Upper Deck inside of Casemate 6 against the forward edge of the stack, blowing a hole downward through to the Main Deck to the Officer's Galley and back to No. 2 boiler uptake. The explosion blew up through the Captain's office; and forward into No. 4 Casemate, starting a fire which spread through the Captain's quarters and up to the Signal Bridge, Navigation Bridge, and Sky Control. The fire spread to the Boat Deck and set off the A.A. Ready Box previously mentioned. The flag bags on the Signal Bridge were burnt out, as were the life jacket lockers. A hole of approximately 30 feet square amidships was burned in the deck of the Signal Bridge beneath and aft of the Chart house. The four compartments on the Signal Bridge were completely wrecked by fire. Nothing of value remains inside of them. Practically all of the Chart House deck hangs down through the hole in the Signal Bridge. This hole extends also through the top of the Captain's quarters and is about the same size there as on the Signal Bridge. The entire enclosure on the Boat Deck, which held all the Captain's quarters and office, was completely destroyed, mostly by the fire, and partly by the explosion from below in No. 6 Casemate. Everything of value therein has been destroyed, including all the records in the Captain's Office. A safe in the Captain's Cabin appears intact, although badly scorched on the outside.
The explosion also blew out a seam amidships of the stack on the portside for a distance about 4 feet just above the Boat Deck level; splinters were also blown through the stack from below and a number of rivets were blown out. Casualties sustained to the starboard 5" A.A. Battery during action were loss of air ramming at Nos. 1, 5, and 7 A.A. Guns. No. 5 was due to a rupture in the air line due to vibration. The uptake from the Officer's Galley was badly damaged by the explosion.
When the bomb struck the Upper Deck at Casemate 6, frame 65, and exploded, it ruptured the stack back as far as frame 68 port, and pushed the smoke pipe in all the way to the top. The explosion blew out the bulkhead between No. 6 & 4 Casemates, and bulged out the bulkhead to No. 3 Casemate. The Canteen was completely destroyed by fire and the explosion blew a hole overhead into the Captain's Office and Cabin. A fire was started in No. 4 and No. 6 Casemates which was extinguished before it did an excessive amount of damage. The Upper Deck in the after starboard corner of Casemate 4 was badly warped downward; hammock nettings, lockers, Canteen, and drinking fountain were destroyed. Stanchions and overhead beams in the vicinity were pulled away from the deck. Ship's Service Office was badly damaged by fire. The explosion blew back into the Incinerator Room damaging some pipe in its forward end, blowing two holes in the after bulkhead of the Incinerator Room, one particle passed through the Bakery, penetrated the Dynamo Trunk on the portside and continued through the after bulkhead of the Dynamo Trunk into the Galley.
This explosion of the bomb on the Upper Deck, Casemate 6, blew a hole about three feet square through the Main Deck in the after portside of the Officer's Galley. The Officer's Galley was wrecked; as was the Dry Cleaning Room. The after bulkhead of the Dry Cleaning Room blew back into the laundry and the port bulkhead blew out into the 6th Division living space (B-171-L). Very little damage was done in the Laundry, or living space B-171-L. Ventilation system 1-68-2 in the port forward part of the laundry was wrecked. The after bulkhead of the Officer's Galley on the starboard side was pushed back slightly into the Laundry Distribution Room. A fire main riser at frame 66 port was broken just above the Upper Deck; this helped keep the fire main pressure down until it was discovered and the valve closed on the third deck. This, however, was after most of the fire had been extinguished.