The USS Blueback was the last active duty diesel-electric (non-nuclear) submarine for the U.S. Navy. Built in 1959, it's 219 feet in length and could travel up to 19,000 miles without refueling.

The final resting place of an iconic U.S. Navy submarine that was sunk 80 years ago during World War II was located 3,000 feet below the ocean's surface, the Naval History and Heritage Command ...