During a deep dive test, a ruptured pipe triggered a cascading series of failures aboard a nuclear submarine. Flooding and electrical instability led to the reactor shutting down automatically. As the ...

Investigators examining a lost submarine uncovered physical damage patterns that did not align with official explanations. Hull deformation, debris distribution, and internal collapse points suggested ...

The United States has improved the readiness of its underwater forces amid China's fast-growing navy, with none of its nuclear-powered attack submarines idle awaiting maintenance for the first time in ...

Add Yahoo as a preferred source to see more of our stories on Google. A submarine of the Israeli Navy's Dolphin class, which was built in Germany. A commission of inquiry set up to shed light on ...

Submarines are hard to find. They exploit ocean depth, acoustic complexity, and thermal layers to maintain low observability and high survivability. Diesel-electric submarines are especially quiet at ...

North Korea on Thursday released new images of what it claims is its first nuclear-powered submarine, a massive vessel equal in size to some of the United States Navy’s attack subs. The pictures ...

This is read by an automated voice. Please report any issues or inconsistencies here. SEOUL — North Korea on Thursday displayed apparent progress in the construction of a nuclear-powered submarine, ...

North Korea showed off its apparent progress in the development of a nuclear-powered submarine. State media released photos of North Korean dictator Kim Jong Un and his daughter, a potential heir, as ...

Hanwha's Philly Shipyard has the capability of building a nuclear-powered submarine for the U.S. Navy, said Alex Wong, global chief strategy officer at Hanwha Group, according to a statement from the ...

The debut followed the North’s first test of a new surface-to-air missile and the arrival of a U.S. nuclear-powered attack sub for a port call in South Korea. By Choe Sang-Hun Reporting from Seoul The ...

North Korean leader Kim Jong Un observed construction of a submarine with his daughter, a potential heir, and oversaw the test-firing of long-range surface-to-air missiles, state media reported on ...

The U.S. Navy accepted delivery of the Submarine Force’s newest fast attack submarine, the future USS Idaho, from General Dynamics Electric Boat on Dec. 15 in Groton, Conn., marking the second ...