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

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

The South Korean-owned Philly Shipyard in the United States does not currently have the capability to build a nuclear-powered ...

The science of submarines has grown exponentially since the CSS Hunley sank the USS Housatonic on February 17, 1864. The Hunley was the first military submarine to sink an enemy target, but the ...

U.S. Navy Ohio-Class submarine USS Alaska (SSBN-732) returns after a deployment, to home-port Naval Submarine Base Kings Bay, Georgia on October 1, 2021. USS Alaska is one of six ballistic missile ...