In 1963, USS Thresher sank, killing all 129 aboard—sparking decades of speculation. It remains the deadliest submarine ...

A missing Indonesian submarine has been found cracked apart on the seabed in waters off Bali, the military said Sunday, as it confirmed that all 53 crew perished in the disaster. Authorities said that ...

President Donald Trump said the two survivors from a U.S. strike on a vessel suspected of carrying drugs are being sent back ...

NATO is closely monitoring a Russian submarine sailing on the surface through the English Channel and the North Sea.