The "XXLUVs" can likely be loaded with significantly larger payloads than the U.S. Navy's Orca, which is also undergoing testing.

Nuclear-powered submarines use some of the most advanced military technology in the world. These are the ones that are a cut ...

Russia has maintained—and increased—its submarine operations across the world’s oceans, including the northern Atlantic and ...

China's surface navy is growing at a rapid pace as busy shipyards turn out new warships, but the US maintains an edge ...

A Navy wreck from World War I was officially discovered this year, despite technically being found before. Here's how modern teams located it.

Photos of North Korea's military provide a glimpse into what it's like to serve in one of the world's largest and most ...