America's dominance beneath the waves grows as its newest nuclear submarine completed its initial sea trials and prepares for active deployment.

The multi-year deal to buy 15 nuclear submarines for the U.S. Navy that has been delayed by negotiations over ballooning costs of labor and material could be wrapped up by the end of the year, HII officials said during a Thursday earnings call.

The U.S. Navy has begun work on a new generation of attack submarines with never-before-seen weapons, quieting technology, undersea attack drones, sonar and communications networking… to emerge at some point over the next 10 years or more. Will it be the ...

Prime Minister Mark Carney toured a South Korean submarine Thursday during a visit to the shipyards of Hanwha Ocean, one of two companies competing to build Canada's next fleet of submarines.

The Spanish Navy’s first-in-class new S-80 Plus diesel-electric submarine (SSK), ESPS Isaac Peral, has deployed on its first NATO operation.