In a set of photos released on Monday, U.S. Navy sailors are seen loading Tomahawk missiles onto the Los Angeles -class ...

The USS F-1 was hit broadside by another sub during a training exercise and sank in seconds, killing 19 members of the crew.

The role of the previously unreported submarine in the Chinese navy, which is the world's largest by hull count, remains unclear.

China is building a new diesel-electric submarine, open-source satellite imagery suggested, as it continues to enhance undersea warfare capability against the U.S. Navy.

Expedition captures the first ever images of the wreck of a World War I submarine The USS F-1 was lost in 1917 in a collision off of California, killing most of its crew. Nicholas Slayton ...

Submarines have gone missing numerous times over the years — but not all have been recovered. Here are 7 vessels that were lost and never found.

Scientists captured never-before-seen images of the World War I-era USS F-1 submarine wreck off California's coast, honoring 19 sailors lost in 1917.

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.

High-definition pictures of a World War I-era U.S. Navy submarine that sank to the bottom of the ocean near San Diego were just released, over a century after it was lost at sea.

The NEMO is the newest high-tech gadget for the ultrawealthy. It's a personal submarine that costs hundreds of thousands of dollars and can explore the ocean for hours. See photos of the sleek ...

MELBOURNE, Australia — China is expanding its submarine base on the edge of the South China Sea, with satellite photos showing it’s building two new piers. The imagery of the Yulin naval base ...

Titanic Submarine Wreckage: 1st Photos Of Titan Vessel Recovered From The Ocean The photos taken Wednesday show the crew of a Canadian ship unloading several pieces of the Titan more than a week ...