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O 21-class submarine

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The O 21 class was a class of seven submarines, built for the Royal Netherlands Navy. [1]

7 relations: Diesel engine, Electric motor, Kriegsmarine, Royal Netherlands Navy, Ship class, Submarine, Torpedo tube.

Diesel engine

The diesel engine (also known as a compression-ignition or 'CI' engine) is an internal combustion engine in which ignition of the fuel that has been injected into the combustion chamber is initiated by the high temperature which a gas achieves when greatly compressed (adiabatic compression).

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Electric motor

An electric motor is an electrical machine that converts electrical energy into mechanical energy.

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The Kriegsmarine (War Navy) was the navy of Nazi Germany from 1935 to 1945.

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Royal Netherlands Navy

The Royal Netherlands Navy (Koninklijke Marine, Royal Navy) is the navy of the Netherlands.

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Ship class

A ship class is a group of ships of a similar design.

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A submarine is a watercraft capable of independent operation underwater.

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Torpedo tube

A torpedo tube is a cylinder shaped device for launching torpedoes.

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O 21 class submarine.


[1] https://en.wikipedia.org/wiki/O_21-class_submarine

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