The largest submarine in the world, Russia's massive K-329 Belgorod, was designed for special, covert operations and was last photographed in the Barents Sea in September 2022 before vanishing without ...

The United States remains the world's leading operator of nuclear submarines, including fast-attack, ballistic-missile, and guided-missile types. However, the most significant shift in the undersea ...

The Navy is racing to field a new generation of ballistic missile submarines that will eventually rank as the 12 largest boats it has ever operated, aiming to close a looming nuclear deterrent gap as ...

At its current production rates, China is likely to have a far more menacing submarine force than Russia in short order—though its quality is still uncertain.