The U.S. nuclear-powered
submarine USS Thresher (SSN-593) sank
April 10,
1963 in approximately 8,500 feet of water about 100 miles east of [Cape Cod]
?. Thresher is in six major sections on the ocean floor. The majority of the debris is in an area of about 400 yards square. The major sections are the sail, sonar dome, bow section, engineering spaces section, operations spaces section, and the tail section.