Submarine - Wikiwand

A submarine is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as boats rather than ships irrespective of their size.

Brazilian submarine Riachuelo (S40) - Wikiwand

Submarine pen - Wikiwand Submarine, Submarines, Cover photos

British T-class submarine - Wikiwand

Scorpène-class submarine - Wikiwand

Ghadir-class submarine - Wikiwand

Oscar-class submarine - Wikiwand

Sailfish-class submarine - Wikiwand

Sargo-class submarine - Wikiwand

Seawolf-class submarine - Wikiwand

Walrus-class submarine - Wikiwand