As the war progressed, and the threat of German submarines became acute, Castle Harbour's role was expanded.
She was refitted, armed with a 3-inch gun on the bow, four machine guns and sixteen depth charges, and commissioned as HMS Castle Harbour.
Crewed mostly by local-service ratings, she was tasked with anti-submarine patrols within the reefline to prevent attacks like that carried out at Scapa Flow by the German submarine U-47 under the command of Günther Prien on 14 October 1939.
It was also thought German submarines might be used to land raiding parties, saboteurs, or spies.
Outside the reefs, Charles Fairey's similarly converted yacht carried our anti-submarine patrols as HMS Evadne.
As the war progressed, and the threat of German submarines became acute, Castle Harbour's role was expanded. She was refitted, armed with a 3-inch gun on the bow, four machine guns and sixteen depth charges, and commissioned as HMS Castle Harbour. Crewed mostly by local-service ratings, she was tasked with anti-submarine patrols within the reefline to prevent attacks like that carried out at Scapa Flow by the German submarine U-47 under the command of Günther Prien on 14 October 1939. It was also thought German submarines might be used to land raiding parties, saboteurs, or spies. Outside the reefs, Charles Fairey's similarly converted yacht carried our anti-submarine patrols as HMS Evadne.
HMS Castle Harbour