The Russian Typhoon-class SSBN (Project 941 "Akula") is the largest nuclear-powered ballistic missile submarine ever built.

In September 1914, a single German U-boat ventured into the North Sea. Lieutenant Otto Weddigen’s U-9 slipped past patrols ...

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.

The Navy's "Self Defense Test Ship," an aging, decommissioned destroyer, is vital to security, but there's no clear plan to replace it, watchdogs say.

Iran has released a propaganda video claiming its hypersonic Fattah missile could destroy the USS Abraham Lincoln as a US carrier strike group heads towards the Middle East. The footage coincides with ...