Submarines are a vital part of the United States Navy, but there is one in particular that stayed at sea for 727 days. Here's ...

The US Navy is widely regarded for its global undersea superiority, a distinction which the service is intensely working to preserve through extensive modernization and submarine production. Today’s ...

The US Navy has accepted delivery of its newest Virginia-class fast attack submarine, the future USS Idaho, marking another step in the service’s effort to strengthen undersea warfare capabilities.

The Portsmouth Naval Shipyard project distinguished Cheyenne as the first submarine to undergo an overhaul as part of a program that extended its total service life beyond 44 years.

The end of the Cold War resulted in a premature end for the promising and heavily armed Seawolf-class of submarines, capable boats that arguably would have been continued if Pentagon decision-makers ...

To find replacement parts when something fails unexpectedly, the Navy has sometimes had to "cannibalize" other submarines.