Naval History and Heritage Command

Office of the Chief of Naval Operations, to Flag Officers

RADIOGRAM

Leased Wire     (Code translation)            Washington DC

FROM : Opnav.                                    March 16 1918

TO   : C-in-C, Atlantic Fleet, Comcrufor. (Atlantic) Comdt. Amer Patrol Detach.; Flag, San Dom. Nav. Rad. St. Thomas, V.I., Navy Radio New Orleans Comdts 1-8th Nav. Dists., Com. 15th Nav. Dist.1

To:    Commandant 6th Naval District

From:  Chief Naval Operations

MOST SECRET- From information gained by contact with enemy cruising submarines, one may be encountered anywhere west of 40th west2  No lights should be carried except as may be necessary to avoid collision and paravanes|3| should be used when practicable and feasible – Acknowledge

Commander in Chief (Atl Fleet)4

Commander Cruiser Force (Atlantic)5

Commander American Patrol Detachment6

Flag San Domingo7

Navy Radio S. Thomas V I

Comdt. 1st Nav. Dist.

       2nd  "    " 

       3rd  "    " 

       4th  "    " 

       5th  "    " 

       6th  "    " 

       7th  "    " 

       8th  "    "8

      15th  "    "9         13016