9 Super Submarines

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Super SUBMARINES by Tony Mitton and Ant Parker

A submarine's a kind of boat that dives beneath the sea. Below the waves is such a strange and wondrous place to be.

To travel down it takes in water till its tanks are full — the weight of water gives the submarine a downward pull.

When it's underwater the propeller makes it go. The hydroplanes can tilt to steer it up or down, like so. The rudder also steers the sub and turns it left or right. Computers help to navigate down deep there's not much light.