The huge patrol beats the previous record of 204 days.

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 ...

In modern naval warfare, few details are as tightly protected as a submarine’s propeller design. While it may seem like a ...

Submarines are among the most advanced and mysterious machines ever built. Designed to operate beneath the surface of the sea ...