This April 16, 1944 photo provided by the U.S. Navy, posted on a U.S. Coast Guard web site, shows crewmen of German submarine U-550 abandoning ship in the Atlantic Ocean after being depth charged by the USS Joyce, a destroyer in an Allied convoy that the submarine attacked. A team of explorers found the U-550, a World War II-era German submarine, Monday, July 23, 2012, on the floor of the Atlantic about 70 miles south of Nantucket Island, Mass.