Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters, to Rear Admiral Henry B. Wilson, Commander, United States Patrol Squadrons Operating in European Waters
Subject Copy. File No. <11-4-14>
Cablegram Sent April 4, 1918, MJK
To Comfran Brest. Serial No. 1588
Prep. by O-1 SX D.R.
1588. Your 1513. Decision has been made to run convoy during daylight during period of five days on each side of full moon. Rest of month run at night until further experience is gained. Vessels making over 10 knots will proceed alone. 22304 1588.
Source Note: Cy, DNA, RG 45, Entry 517B.