Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters, to the Office of the Chief of Naval Operations
Subject Copy. File No. <16/6/7a>
Cablegram Sent November 18, 1918. Y-29
To Opnav, Washington Serial No. 9952
Prep. by N-5 SX D.R.
9952, URGENT. From chart secured today from the Germans find minefields laid on the American Coast South of Long Island as follows: Lat. 35-36-30 N. between Long. 75-15 and 75-22 W. Lat. 37-44-30 N. between Long. 74-54 and 74-57 W. Between Lat. 38-15-40 N. Long. 74-41 W. and Lat. 38-16-30 N. Long. 74-46 W. Between Lat. 39-41-20 N. Long. 73-54 W. and Lat. 39-42-30 N. Long. 73-59-30 W. Lat. 35-43 N. between Long. 74-50 and 75-12 W. Between Lat. 39-16 N. Long. 73-37 W. and Lat. 39-22 N. Long. 73-50 W. Between Lat. 36.12 N. Long. 75-09 W. and Lat. 36-18 N. Long. 75-20 W. Between Cape Henry, Smith Island, Mouth of Chesapeake, across mouth of Delaware River, two miles east of Overfalls Light. Neighborhood of Ambrose Channel Light Ship. East of Fire Island Light extending north by west and south by east for five miles. 165518 9952
Source Note: Cy, DNA, RG 45, Entry 517B.