Office of the Chief of Naval Operations to Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters
20 February 1918.
VICE ADMIRAL SIMS.
Opnav 3118 (BOX) As soon as operations begin doubtless the enem
ey will attempt to destroy force engaged in mine laying period In addition to destroyers referred to am strongly impressed with necessity for adequate patrol of heavily armed vessels between barrage and enemy coast period Request this matter be given serious and immediate attention and we be informed as to measures to be taken 12020
Source Note: Cy, DNA, RG 45, Entry 517B. Document identifiers: “OP-9”; “OL 3118.”