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 ...

The collaboration is aimed at strengthening India’s submarine design and export capabilities as part of its growing defence ...

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 ...

It amounted to a disaster, in which the submarine was subject to two enormous explosions, killing all 118 crew on board. In ...

Russia is increasingly outsourcing its war in Ukraine. To offset record losses and dwindling recruitment, Moscow is importing ...