Warning to All Ships and Stations
U.S. NAVAL RADIO SERVICE
<June 3, 1918.>
TO ALL SHIPS AND STATIONS
Begins unmistakable evidence enemy submarine immediately off coast between Cape Hatteras and Block Island, vessels not properly convoyed, advised to make port until further notice. 07403
Source Note: D, DNA, RG 45, Entry 517B. The document is on a Navy Radio Service form with printed boxes for information both at the top and bottom of the form. As few of these are filled in and where they are filled in the information is repeated in the text printed here, the editors have chosen not to re-create the form.