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

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 ...

India and Germany are preparing to sign an $8 billion defence deal for advanced submarines, including technology transfer and domestic manufacturing, marking the largest-ever military agreement ...

The Columbia-class submarine outstrips its predecessor, the Ohio class, in many ways—but falls short in one conspicuous one.