Submarines are a vital part of the United States Navy, but there is one in particular that stayed at sea for 727 days. Here's ...

The U.S. Navy has quietly moved one of its most advanced submarines into contested waters, signaling that Washington is ...

The U.S. Navy is expected to give General Atomics flight clearance for anti-submarine warfare operations using the MQ-9B ...

The U.S. Navy has some of the most advanced nuclear submarines in the world. Its newest addition is named after an important ...

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

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 the world operating ...

The engine room of one of the U.S. Navy’s newest fast attack submarines, the USS Idaho, will be named for former Idaho ...

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. CNN — Seoul, South Korea (CNN) — South Korea ...