The U.S. operates a fleet of more than 50 nuclear-powered fast attack submarines to counter China's naval threat.

What are the deadliest submarines in naval history? Take a closer look at some of the most potent vessels to take to the sea.

The construction of two more submarines under Project Borey-A continues, Russian Defense Minister Andrey Belousov said ...

The Russian Navy plans to expand its Lada-class fleet with two new submarines, focusing on enhanced strike capabilities.

UK MoD officials have warned that mismanagement has left the nation unable to maintain its nuclear submarine programme ...