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How does a

submarine dive?

Tell me morę: submarine movement

■    A submarine “flies” through the water like an airship flies through air.

■    Once a submarine has dived, it changes its depth by using miniwings called planes.

■    The bow (front) planes are tilted up or down to make the submarine climb higher or sink lower in the water.

■    The Stern (rear) planes are tilted up or down to adjust the submarine’s bow

the sub to port (left) or starboard (right).

A submarine dives by making itself heavier than the water around it and surfaces by making itself lighter again. When a submarine dives, water pressing down on it tries to crush it, so these vessels have to be strong enough to resist the pressure. The deeper a submarine goes, the greater the pressure applied to it.

How to: make a submarine dive and surface