A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.)

Nov 21, 2025 · A submarine is any naval vessel that is capable of propelling itself beneath the water as well as on the water’s surface. This is a unique capability among warships, and …

5 hours ago · With fifth-generation submarines on the horizon, their technology has come a long way. Ultra-advanced subs of today use nuclear power and beyond.

Apr 24, 2025 · Today’s submarine force is the most capable force in the world and the history of the U.S. Navy. The composition of the current force consists of Los Angeles, Ohio, Seawolf, …

Jul 22, 2025 · A submarine is a specialized watercraft designed for underwater operations. Unlike surface ships, submarines can submerge and navigate beneath the water’s surface, making …

6 days ago · The first widely circulated image of the bizarre-looking trimaran point to it being just as much submarine as surface vessel. The purpose of this intriguing craft is still unknown, but …

Nov 7, 2025 · The 25th Virginia-class fast-attack submarine, the future USS Massachusetts (SSN-798), was delivered Friday to the Navy, according to sea service and industry officials.

Comprehensive coverage of submarine technologies, submarines design, and operational use in military and scientific contexts.

Jul 2, 2025 · Explore the United States' Submarine Force, featuring attack, ballistic missile, and guided missile submarines and their diverse missions.

Today’s submarine force is the most capable force in the world and the history of U.S. Navy, comprising 53 fast attack submarines, 14 ballistic-missile submarines and four guided-missile...