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.

Goldstone chronicled Holland’s unfathomable story in his 2017 book, "Going Deep: John Philip Holland and The Invention of the Attack Submarine." "He figured out how to use the principals of undersea ...

A submarine under construction in Germany features an unusually large sail, one that likely packs a very potent punch. Experts believe the submarine, the future INS Drakon, will store and launch ...