Naval History and Heritage Command

Naval History and Heritage Command

Office of the Chief of Naval Operations All Navy War Warning

U. S. NAVAL RADIO SERVICE.

Received or Filed at Station      By Radio      11 pm. Aug. 6th.

        San Domingo

ORIGIN <Opnav.>          OPERATOR

Washington.                GH

Via  Direct

GOVT. War Warning.

Begins  Enemy submarine may be encountered in West at lantic between latitude of Cape Race and Charleston, Active on American and Nova Scotian Coast. Diamond Shoals Light <S>hip reported sunk Ends.1

Source Note: Cy, DNA, RG 45, Entry 517B. Note below close: “COPY TO KWASIND, BRIGADE, INTELLIGENCE OFFICER.” Notation in upper left hand corner: “MEJ.”

Footnote 1: Diamond Shoal Lightship No. 71, stationed off Cape Hatteras, was sunk by gunfire from U-140 (the U-boat referred to in this warning) on 6 August. For a full account of its sinking, see Clark, U-Boats to America, 184-86.

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