Yahoo

I toured the USS Cobia, a World War II submarine that sank 13 ships and received 4 battle stars. Take a look inside.

The USS Cobia submarine sank 13 ships and rescued seven downed American pilots during World War II. The US Navy submarine is open to the public for tours at the Wisconsin Maritime Museum in Manitowoc.
Travel Weekly

From sea life to sunken ships: Discoveries on an expedition ship's submarine dive

A fisherman named Gino Perez had long heard the stories of the Titania. The location of the vessel, a World War I-era supply ship, was one of lore, namely because it had been sunk 110 years ago near ...
MLive

Peer out the periscope, sleep next to torpedoes on a World War II submarine

MUSKEGON, MI -- Sitting in the Muskegon Lake channel is an 82-year-old piece of World War II history. And you can sleep on it. The USS Silversides is one of the most successful submarines of World War ...
Business Insider

A group of WWII-era scientists used themselves as guinea pigs to learn to breathe underwater. Their experiments helped make D-Day possible.

During WWII, scientists experimented on themselves to help divers and submarine crews. The scientists conducted over 600 experiments on themselves, breathing CO2, oxygen, and more gases. The British ...