20th Frigate Squadron (United Kingdom)

The 20th Frigate Squadron was an administrative unit of the Royal Navy from 1961 to 1966.

20th Frigate Squadron
ActiveNovember 1961 – 1966
Country United Kingdom
Branch Royal Navy
FirstCaptain Denis Jermain
LastCaptain Anthony S. Morton

Operational history

A squadron of 4 frigates was established at Derry, Northern Ireland, in 1961 initially comprising HMS Undaunted, HMS Falmouth, HMS Rothesay and HMS Blackwood. The squadron was responsible for the advanced training of officers in anti-submarine warfare and for the evaluation of modern anti-submarine equipment. Although operational from Derry, the ships assigned to the squadron continued to carry out their refits and intermediate dockings at their base ports (HMNB Devonport, Portsmouth and Rosyth).[1]

During its service, the squadron included Type 14, Type 15 and Rothesay-class frigates.

Squadron commander


Captain Denis JermainHMS YarmouthNovember 1961-April 1963
Captain E. Gerard N. MansfieldHMS YarmouthApril 1963-December 1964
Captain Anthony S. MortonHMS YarmouthDecember 1964-1966

See also


  1. The Naval Review, Vol. XLIX, No. 4, October 1961.
  2. Royal Navy Senior Appointments, Colin Mackie
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