Cowling Castle Criccieth Castle Cromer Castle Devizes Castle Dhyfe Castle Dunster Castle Egremont Castle Fotheringay Castle Helmsley Castle Malling Castle Malmesbury Castle Raby Castle Trematon Castle Tutbury Castle Wigmore Castle Castles sunk or destroyed in action was sunk by northwest of Ireland on 1 September 1944. HNoMS Tunsberg Castle was sunk by a mine near Båtsfjord, Norway on 12 December 1944. was hit by a torpedo from in the Barents Sea on 13 February 1945. She was towed by to the Kola Inlet but later capsized. U-boats sunk by Castles was sunk by , , , , , and on 6 March 1944 was sunk in the north-west of Ireland by and on 9 September 1944 was sunk south of Ireland by , , and on 11 November 1944 was sunk in the Barents Sea by on 9 December 1944 was sunk north-west of the Azores by on 27 December 1944 was sunk in the Barents Sea by and on 17 February 1945 was sunk in the Bay of Biscay by and on 10 April 1945 Film appearance The final third of the film The Cruel Sea is set on the Castle-class corvette Saltash Castle (portrayed by ). Post-war conversions Three were converted to passenger/cargo ships for the Union Steamship Company of British Columbia and were known as the White Boats. They were operated from 1946 to 1958 but were heavy on fuel and had limited cargo capacity, for example they could not carry cars in the hold. SS Camosun III – ex-HMCS St. Thomas, HMS Sandgate Castle SS Chilcotin – ex-HMCS Hespeler, HMS Guildford Castle SS Coquitlam II – ex-HMCS Leaside, HMS Walmer Castle References Citations Sources Twigg, Arthur M.: Union Steamships Remembered: 1920–1958 (1997) . External links Castle-class corvette (Frigate) Association Castle-class corvettes on U-Boat.net Corvette classes