Submarines came to the forefront of military navies with the advent of WWI, as Germany's dangerous U-boats proved a formidable force throughout the conflict.

A group of divers have explored the wreckage of a WW1-era Royal Navy submarine – 100 years after it sank. Dominic Robinson, 54, and a team of 10 dived 74m down to check out the century-old HMS M1 sub ...

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.

Archaeology & History A Lost WWI Submarine Is Discovered ‘Remarkably Intact’ After 100 Years Researchers also surveyed a Navy torpedo bomber that crashed in 1950.

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.

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. The high ...

Scientists announced they’ve captured unprecedented images of the final resting place of a World War I-era sub more than 1,300 feet below the ocean’s surface.

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

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.

You Can Spend the Night on a Fully Restored World War II Submarine The Wisconsin Maritime Museum is home to the USS “Cobia,” a 312-foot-long vessel that completed six war patrols during World ...