Key Points and Summary – Britain’s HMS Vanguard and France’s Le Triomphant—both ballistic-missile submarines—accidentally ...

In 1963, USS Thresher sank, killing all 129 aboard—sparking decades of speculation. It remains the deadliest submarine ...

In January 2005, the Los Angeles-class attack submarine USS San Francisco (SSN-711) slammed—at flank speed—into an uncharted seamount southeast of Guam. -One sailor died and dozens were injured, yet ...

A RUSSIAN submarine capable of carrying nuclear weapons suffered a “serious accident” in the Mediterranean, according to ...

Novorossiysk, a Russian diesel-electric submarine, experienced a critical fuel system malfunction in the Mediterranean Sea, ...

Model of the Kursk nuclear submarine at the Lennusadam Maritime Museum in Tallinn, Estonia. Pjotr Mahhonin/Wikimedia Commons, CC BY During his first term, Vladimir Putin had to confront a raft of ...

Moscow’s cover-up of the Kursk submarine incident seriously damaged Russian President Vladimir Putin’s prestige—and was even viewed by some as a “turning point” for modern Russia. The Americans almost ...

Novorossiysk, a Russian nuclear submarine, is reportedly facing a critical safety hazard in the Mediterranean Sea after ...

As adversaries target submarine cables, the United States’ weak repair capacity must be treated as a national security ...

The following is the Sept. 25, 2025, Congressional Research Service report to Congress, Navy Columbia (SSBN-826) Class ...

U.S. and Russian submarines can launch torpedoes and missiles for anti-submarine, anti-surface and land-attack missions.