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Basic Principles

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Submarine diving

Cobwebs Day

   

Submarine Diving and Surfacing


The submarine captain will give the order to dive the boat. The main engines will be shut down if running. The main ballast tanks have a valve at the top of each tank, which when the order is given are opened. 3 and 5 main ballast were used as fuel tanks so the valves remain closed. On opening of the valves the air within the tank rushes out and through holes at the bottom of the tank, water rushes in. This alters the buoyancy of the submarine causing it to slip under the waves. Once under the waves the valves on top of the ballast tanks are closed.

The captain will give the order to surface the boat, the main ballast tanks have high pressure air blown into them to force the water out of the tank through the holes at the bottom of the tanks. This again alters the buoyancy of the submarine causing it to rise to the surface. Once on the surface the main engines will be started to re-charge the batteries.










Dolphins