The Columbia-class submarine outstrips its predecessor, the Ohio class, in many ways—but falls short in one conspicuous one.

This month, a welder at a Virginia shipyard etched the keel plate of the USS Barb, the ceremonial birthing of a new submarine. The Virginia-class fast attack submarine joins hundreds of Navy subs ...

Seoul, South Korea (CNN) — South Korea wants to join the undersea naval elite – and has received the blessing of US President Donald Trump to do just that. Having Seoul become the seventh country in ...