How submarine move in water?

Submarines are just a type of boat or ship that can go under water.

To move they have to have a propeller turned by a motor. There are very rare exceptions.

The motor can be an electric motor powered by batteries, a Diesel or petrol engine burning Hydrogen peroxide and fuel under water (yes seriously) or on some military boats use a nuclear reactor.

The exceptions:The Hunley that was built during the American Civil war was powered by men turning the propeller.

There have been some technology demonstrators using the force of going up and down in the water to make the Submarine go forward.