US President Donald Trump announced a week ago that South Korea would build the submarine in a Philadelphia shipyard.

The model I tested included an interchangeable Submarine wet roller head which means V16 Piston Submarine can wet clean as ...

The first was a World War II-era submarine chaser commissioned in the 1940s. The new USS Pierre will be home-ported in San ...

USS Cobia’s hull numbers return — discover the WWII sub’s restored identity, pride and the sailors’ unforgettable stories.