Dates: 1950 - 1968

“LOCH CLASS Frigate ordered on 25th January 1943 from Pickersgill at Sunderland to be named LOCH MOCHRUM

but changed in 1944 to an AA Frigate The ship was laid down as Job Number 4813 (Yard Number 269) on 30th November 1944 and launched on 24th September 1945 as HMS PEGWELL BAY. After launch the contract was terminated and she was towed to Devonport for completion by HM Dockyard for use as a Survey Ship. during fitting out. Before completion on 20th July 1950 the name was again changed to HMS COOK. In common with the other four Ex LOCH Class frigate hulls converted into survey ships the name chosen was that of the best known British hydrographer. James Cook (1728 - 1779)



Conversion

Conversion began in February 1948 and completed in July 1950. No armament fitted and changes made to provide additional acccranodation and office space for hydrographic work. More boats and associated handling facilities were fitted together with a radar suitable for survey work (Type 972). Pennant Number for visual signalling purposes changed to A307.

Badge: On a Field Blue , impaled a hemisphere White between an estoile in chief and in base Gold.

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