The USS Lionfish was commissioned in 1944 and earned one battle star for service in World War II. It sank a Japanese submarine, rescued the crew of a B-29 bomber, and served as a training submarine.

Commissioned in 1958, the USS Growler patrolled seas off the coast of Russia during the Cold War. The submarine is now an attraction at the Intrepid Museum in New York City. The USS Growler was once a ...

Tensions are rising in the Strait of Hormuz, one of the world’s busiest sea routes. U.S. carrier strike groups now operate in these waters. Iran relies on its quiet “Black Hole” Kilo-class submarines.

ABOVE THE NORWEGIAN SEA — The sleek, gray NH90 helicopter cut through the brisk Arctic air, leaving the jagged coastal mountains and fjords behind. From above, the frigid blue waters below showed no ...

Diesel engines cannot work without oxygen, so how do diesel submarines operate when they're underwater? Their propulsion system accounts for this limitation.

Inside the commissioning of the USS Iowa submarine and a look at Navy sub school. We travel to Connecticut for the commissioning of the USS Iowa submarine. While we were there, we also got a ...