the first completely transparent submersible that offers a 360-degree view of the sea. While its manufacturer offers other, more-conventional, submarines with large windows, they are nothing like ...

North Korea unveiled for the first time a nuclear-powered submarine under construction, a weapons system that can pose a major security threat to South Korea and the US. State media on Saturday ...

Built in 1943, the Becuna is a Balao-class submarine with a Greater Underwater Propulsive Power 1-A modernization — today, it's the only remaining GUPPY 1-A submarine in the world. After serving ...

By Choe Sang-Hun Reporting from Seoul North Korea said on Saturday that it was building its first nuclear-powered submarine to enhance its nuclear weapons abilities, and the state news media ...