 However the contract was then changed, and the ship was completed to a revised design as a Bay-class anti-aircraft frigate, launched on 26 February 1945, and completed on 13 November 1945.After sea trials in November and December 1945, "Cawsand Bay" was attached for service in the Rosyth Local Flotilla, joining in February 1946.However she was almost immediately nominated for reduction to Reserve status, sailing to Portsmouth to decommission on 11 March.