It may not be known to many, but April 11 is designated as the National Submarine Day, as more than 120 years ago on the same day, the United States Navy purchased its first modern sub for its fleet.

One of the most forward-looking submarine classes ever to serve in the U.S. Navy, the Skipjacks paved the way for the country’s modern nuclear-powered submarine fleet. The Skipjack submarines were not ...

Submarines have evolved gradually from their inception, when they were basically just submersible tubs. Today, however, the submarine is a remarkable machine, worth billions a piece, and loaded with ...