German submarine U-864
 German submarine U-864 was a Type IX U-boat of Nazi Germany's Kriegsmarine in World War II. She departed from Kiel on 5 December 1944 on her last mission to transport to Japan a large quantity of mercury and parts and engineering drawings for German jet fighters. While returning to Bergen Norway to repair a misfiring engine U-864 was detected and sunk on 9 February 1945 by the British submarine HMS Venturer killing all 73 on board.