When was the the ship launched ,that along with the Tripitz and the Lützow was a target for  Operation Source ?
Operation Source Operation Source was a series of attacks to neutralise the heavy German warships – "Tirpitz", "Scharnhorst" and "Lützow" – based in northern Norway, using X-class midget submarines.
USS Shipley Bay USS "Shipley Bay" (CVE-85) was an "Casablanca" class escort carrier of the United States Navy. She was laid down under Maritime Commission contract (MC hull 1122) on 22 November 1943 by Kaiser Co., Inc., Vancouver, Washington; launched on 12 February 1944; sponsored by Mrs. L. B. Richardson; and commissioned on 21 March 1944, Captain Edgar T. Neale in command.