PERTH, Australia (AP) -- A robotic submarine hunting for the missing Malaysian jet aborted its first mission after only six hours, surfacing with no new clues when it exceeded its maximum depth along ...

A U.S. Navy submarine from World War I, the USS F-1, has been discovered 1,300 feet (396 meters) below the surface of the ...

BUENOS AIRES, Argentina -- Almost a year to the day after it went missing with 44 crewmen aboard, an Argentine navy submarine was found 2,625 feet below the surface off the coast of Argentina. Though ...

The robotic mini-submarine deployed to the Indian Ocean floor to hopefully find Malaysia Flight 370 made a premature return to the surface today after exceeding its maximum depth. The Bluefin 21 is ...

Outnumbered and outgunned, the crew of the U.S.S. Johnston fought overwhelming odds before their ship sank more than 21,000 feet into one of the world’s deepest submarine chasms. The U.S.S. Johnston ...