As the United States marks its 250th anniversary, WTOP presents “250 Years of America,” a multipart series examining the innovations, breakthroughs and pivotal moments that have shaped the nation ...

The Navy has been procuring Virginia-class nuclear powered attack submarines (SSNs) since FY1998. The Navy’s envisaged successor to the Virginia-class design is the Next-Generation Attack Submarine, ...

The keel was laid this week for the future USS Barb, the 31st Virginia-class nuclear-powered attack submarine, as the Navy continues to transition away from dependence on the Cold War-era Los ...

Submarines are among the most advanced and mysterious machines ever built. Designed to operate beneath the surface of the sea for extended periods, su.