In a historic deep-sea expedition off the coast of San Diego, researchers have captured stunning, never-before-seen imagery of the U.S. Navy submarine USS F-1, which sank on December 17, 1917, ...

After more than 100 years, we have the first actual image of the wreck of a sunken U.S. Navy submarine from World War I. A recent expedition to survey it and other lost military hardware has captured ...

Researchers have located the wrecks of two long-lost military vehicles on the seafloor a few miles from San Diego: an American submarine that sank during a training accident in 1917, and a U.S. Navy ...

On Dec. 17, 1917, the U.S. submarine USS F-1 was lost at sea during a training accident off the coast of California, killing 19 crew members on board. Now, more than a century after it sunk, ...

A new discovery in the remote Arctic region has stunned scientists. An international team of researchers recently found a vast collection of underwater structures along the edge of the Canadian ...