Researchers have discovered the USS F-1, a World War I-era submarine, which had been lost at sea for 108 years.

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 ...

Researchers took the first ever photographs of the sunken USS F-1, lost in 1917 in a collision off of California.

The World War I-era USS F-1 submarine wreck, lost in 1917, was explored by researchers using advanced technology, capturing new images and its honoring fallen sailors.

With cutting-edge deep-sea imaging technology, researchers captured high-definition images of a 100-year old submarine.

In 1917, two US submarines collided off the coast of San Diego and submarine USS F-1 sank to the bottom of the Pacific Ocean, ...

On a foggy December morning in 1917, three U.S. Navy submarines crept through the waters off the coast of San Diego. They ...

Scientists have discovered the wreck of the American submarine USS F-1, which sank in 1917. It is located off the coast of ...

Cox, retired U.S. Navy rear admiral and head of the Naval History and Heritage Command, resonate with special solemnity in ...

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 ...

Woods Hole Oceanographic Institution (WHOI) video from recent survey expedition of USS F-1 (SS-20) wreck which sank 17 ...

A World War I submarine wreck off the coast of Southern California has been captured for the first time in new video and images made possible using advanced deep-sea imaging technology. At such a ...