The U.S. Navy's Columbia-class ballistic missile submarine program is encountering significant delays and cost overruns, as ...

The U.S. Navy’s next ballistic-missile submarine is already late and over budget—and the actual overrun might nearly ...

The Lafayette-class ballistic missile submarines were pivotal to the U.S. Navy's nuclear deterrent strategy during the Cold ...

GAO says the U.S. Navy should better manage the risks associated with its acquisition of 12 Columbia class submarines for ...

Submarine forces of the U.S. and South Korean navies discussed ways to improve combined operational capabilities.

China’s naval expansion suffered a major setback when its state-of-the-art Zhou-class nuclear-powered submarine reportedly ...

A senior U.S. defense official says satellite imagery shows that China's newest nuclear submarine sank while under ...

The US Navy has 53 fast attack submarines, 14 ballistic-missile submarines and four guided-missile submarines. The entire US submarine fleet is nuclear-powered. The senior defense official said ...

North Korea has repeatedly vowed to expand its nuclear arsenal, but Tuesday's threat followed its recent unveiling of a ...

China’s newest nuclear-powered submarine sank pierside in the spring, and the Chinese navy tried to conceal details regarding the loss, CNN reported, citing two US defence officials. The official said ...

Her comments suggested North Korea may test-fire a missile whose range covers a South Korean site where the U.S. submarine is docked, some observers say. South Korea’s military said the Vermont ...