The vast Pacific Ocean conceals one of America’s most advanced strategic assets: the Virginia-class nuclear attack submarine.

The U.S. Navy is betting $63 billion over the next decade on 10 Virginia-class attack submarines, several of which will carry a new hull section engineered to launch hypersonic missiles and dozens of ...

The Navy is evaluating whether it can add 28 more Tomahawk missiles to each Virginia-class submarine sooner than expected, service leaders said. The service plans to begin production of what's called ...