 However the contract was then changed, and the ship was laid down as Admiralty Job Number 4813 on 30 November 1944 to a revised design as a Bay-class frigate, and launched on 24 September 1945 as "Pegwell Bay".After launching the contract was terminated and the ship was towed to HM Dockyard Devonport for conversion to a survey ship.Work began in February 1948 and was completed in July 1950.