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.

Charlie-class submarine - Wikiwand

Attack submarine - Wikiwand

Typhoon-class submarine - Wikiwand

List of Oberon-class submarines - Wikiwand

130 Submarines ideas submarines, german submarines, u-boots

USS Cusk - Wikiwand

USS Blenny - Wikiwand

German submarine U-37 (1938) - Wikiwand

Sturgeon-class submarine - Wikiwand

Submarine-launched ballistic missile - Wikipedia