 However the contract was changed in 1944, and the ship was laid down as Admiralty Job Number 4795 on 29 April 1944 to a revised design as a Bay-class anti-aircraft frigate, and launched on 12 April 1945 as "Luce Bay".After launching the contract was terminated and the ship was towed to Devonport Dockyard for completion, but while fitting out it was decided to complete her as a survey ship.In January 1947 her name was changed to "Dalrymple" and her pennant number to A302.