At the center of the U.S. effort to collect top-secret intelligence was an unlikely hero: the USS Parche, a Sturgeon-class submarine initially ... silent underwater spy, ready for its first ...

A top-secret autonomous submarine by the US Navy designed for long-term underwater missions was spotted when Google Maps users started exploring the coasts around Naval Base San Diego. The eagle ...

The US Navy wants to mix uncrewed underwater vehicles into its submarine forces. A commander said it's taking a "SpaceX approach" to testing, getting systems out quickly to see what works.