On the night of November 16, 1943, the Japanese submarine I-176, a lone KD7-type vessel, silently prowled the Pacific waters ...

The USS Barb, a Gato-class submarine under the command of Eugene B. Fluckey, earned its place in history as one of the most decorated American subs of World War II, credited with sinking 17 ...

At the time, submarines were powered by diesel-electric engines, which needed substantial amounts of oxygen to charge the batteries of their generators. Take, for example, America's Gato-class ...