German submarine U-615 was a Type VIIC U-boat of the German Navy (Kriegsmarine) for service during World War II. Commissioned on 26 March 1942, and commanded by Kapitänleutnant Ralph Kapitzky, she was depth charged and sunk in the Caribbean Sea, north of Porlamar on 7 August 1943, in position 12°38′N 64°15′W / 12.633°N 64.250°W, by US 6 Mariner and 1 Ventura aircraft. It was the largest aircraft hunt ever mounted for a single U-boat. Of her crew 4 (including her captain) were killed, and 43 survived.