Russia has denied that its submarine is experiencing mechanical problems—but a Russian military blogger has speculated that ...

Russian authorities have allegedly allocated $369 million to recover the remains of K-27 and K-159, two Soviet era submarines ...

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

A RUSSIAN submarine capable of carrying nuclear weapons suffered a “serious accident” in the Mediterranean, according to reports. Fuel is now said to be leaking from Putin’s ...

At the end of September, a Telegram channel known for its network of Russian intelligence sources reported that a Black Sea ...

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 ...

Russia will begin preparations in 2026 to recover two Soviet nuclear submarines from Arctic waters, with operations set to ...

A Navy wreck from World War I was officially discovered this year, despite technically being found before. Here's how modern ...

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

THIS IS A RUSH TRANSCRIPT. THIS COPY MAY NOT BE IN ITS FINAL FORM AND MAY BE UPDATED. KYRA PHILLIPS, CNN ANCHOR: We begin with the latest on the collision of a U.S. nuclear sub and a Japanese fishing ...