German submarine U-304 was a Type VIIC U-boat of the Nazi German Kriegsmarine during World War II. She saw service in the Atlantic Ocean and Mediterranean Sea. Built in 1941 and 1942 at Flender-Werke, Lübeck, U-304 was a Type VIIC U-boat, capable of lengthy ocean patrols and of operating in distant environments. U-304 was launched on 13 June 1942 and commissioned 5 August 1942. On 28 May 1943 the boat was attacked by British aircraft and sunk by bombs off Cape Farewell in the North Atlantic at . All 46 crew members died in the event.