The Navy and shipbuilders working on the first Columbia-class nuclear ballistic missile submarine are striving to accelerate ...

The United States has reached a milestone in building the Navy’s first next-generation submarine equipped with nuclear missiles as it races to modernize its air-, land- and sea-based strategic forces ...

Add Yahoo as a preferred source to see more of our stories on Google. An undated photo of the completed bow module for the future USS District of Columbia at the HII Newport News Shipbuilding plant in ...

A $2.3 billion Navy contract is intended to speed up the purchase and construction of five of the service’s newest class of ballistic missile submarines, a program plagued by cost overruns and delays.

Almost nobody knows where they are at any given time, yet nuclear-armed ballistic missile submarines quietly patrol dark domains of the undersea realm in strategically vital waters around the globe, ...

China has launched more nuclear-powered submarines than the United States over the past five ...