Type: XXI Construction Laid Down: July 25, 1944 Launched: September 22, 1944 Commissioned: November 2, 1944 Shipyard: Schichau-Werke, Danzig Commander Detlef von Lehsten Fate: Sunk whilst empty in Wilhelmshaven by an Eighth Air Force raid on March 3, 1945. It was raised by engineers, but sunk again on March 30, 1945. U-boat.net webpage for U-3508