Most of China's submarine fleet is diesel-electric, but Beijing is ramping up production of nuclear-powered classes.

A single Mk-48 torpedo achieved "immediate effect" on an Iranian frigate, which was operating in the Indian Ocean, the Pentagon confirmed.

The Torsk's sinking of the Japanese vessel marked the last U.S. submarine kill for over eight decades - that is until March 3, 2026.

The Pentagon has not said which American submarine fired the torpedo, except to say it was a fast-attack submarine.

Nuclear submarines are the latest in monumentally advanced technology powering global military forces. Throughout the entire world, there are only nine nations that have developed nuclear weapons. Of ...

For the first time, China has outstripped U.S. nuclear-powered submarine production, an independent global security think ...

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GYEONGJU, South Korea (AP) — The United States will share closely held technology to allow South Korea to build a nuclear-powered submarine, President Donald Trump said on social media Thursday after ...

Robert Hunt was a torpedoman on the USS Tambor. He ran 12 consecutive war patrols in the Pacific and never fully shook what those missions felt like. "I was just sure I was going to die," he recalled ...

Satellite imagery shows recent activity by Russia's submarine fleet in the country's Far East region, where Moscow maintains a strong military presence. Newsweek has emailed both the Russian defense ...