Admiralty to Vice Admiral Heathcoat S. Grant, Senior Officer, Gibraltar
Operation Orders of Force Movements, etc.
Secret Routes for Vessels.
TELEGRAM No. 800
To: S.N.O. Gibraltar Date 21. 9. 17. Sent 2154.
In view of submarine activity to West of Gibraltar following proposal should be considered in conjunction with Admiral Wilson (fullstop)
Special service vessels “LAGGIN” “RULE” “ACTON” “UNDERWING”, “MASHFORT” and “PUMA” to be temporarily based at Gibraltar for duty as zone escort, and for operations for which they are specially designed (fullstop) Utilize U.S.Cruisers and gunboats “SACRAMENTO” “SENECA” “OSSIPEE” “MANNING” “YAMACRAW” as ocean escorts inlieu. (fullstop) It is very doubtful in any case whether special service vessels can continue ocean escorts during winter months (fullstop) If you concur in this proposal Commodores will be essential for each convoy and it may then become practicable to convoy the Outward Gibraltar vessels as far as Gibraltar without dispersing them when clear of British immediate s/m danger zone as at present (fullstop) Report by wire if you concur.
Source Note: Cy, DNA, RG 45, Entry 517B. Copies sent: “War Registry (cypher)/Convoy [Mercantile Movements Division]/D.O.D.[Director, Operations Division]/M [Military Intelligence Division].”