Capture of U-570

27–28 August 1941, North Atlantic, south of Iceland

British success; U-570 captured intact by aircraft and trawlers

U-570 was on her first patrol, with an inexperienced crew, when she surfaced south of Iceland on the morning of 27 August 1941 right under a Lockheed Hudson of 269 Squadron, Coastal Command. Squadron Leader James Thompson's depth charges shook her badly; her crew thought she was flooding with chlorine gas and came up on deck, and Kapitänleutnant Hans-Joachim Rahmlow waved a white shirt. The Hudson circled until a Catalina relieved it, and through the night trawlers, whalers and two destroyers arrived. The crew surrendered and the boat was towed to Iceland and beached. It was the only U-boat to surrender to an aircraft. Repaired, she was commissioned into the Royal Navy as HMS Graph.