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They help the sub go up and down. When water is allowed into the tanks, the sub goes down. When water is pushed out of the tanks, sub comes up.

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Q: What is the purpose of a submarine ballast tasks?
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What are the purpose of ballast tanks?

to control the buoyancy of a submarine


What is the purpose of a submarine's ballast tank?

to keep the sub level or help it to dive and surface


What is the purpose of a submarine's ballast tanks?

to keep the sub level or help it to dive and surface


How do fluids help ballast chambers on a submarine?

A submarine actually controls its weight by allowing water to enter or exit hollow chambers in its hull. These chambers are called ballast tanks. Ballast is anything carried in a ship to give stability. When water is allowed to flood into a submarine's ballast tanks, the weight of the submarine increases. When this increased weight exceeds the submarine's buoyancy, the submarine will sink. To allow the submarine to rise, air is pumped into the ballast tanks. The air forces out the water, reducing the weight of the submarine. The submarine then becomes lighter, buoyancy increases, and it floats to the surface. A submarine can also be made to "float" underwater at any depth by adjusting the amount of water weight in its ballast tanks.


What is a submarines buoyancy?

A submarine has a variable buoyancy due to it's ballast tanks. When a submarine submerges, it fills it's ballast tanks with water which causes negative buoyancy. When a submarine surfaces, it pumps the water out of the ballast tanks thus giving it positive buoyancy.


How does a submarine change its density?

To be able to submerge in the water, the sub has to become heavier. Ballast tanks are utilzed for this purpose. Water is let into them, and the sub sinks. To rise, air is pumped into the ballast tanks, and the sub rises.


What is a trim ballast tank?

That is a ballast tank used to alter the angle of the submarine up or down


Where did they got the idea of making submarine.?

Theygot the idea from the fishes to build a submarine. As fishes have swim bladder they kept ballast tanks in the submarine.


How does water enter the submarine?

Water enters the submarine by letting water out not into its ballast tanks it enters from the flagura to the magura.


How does a submarine float?

It floats and sink by changing its buoyancy. The primary method of controling buoyancy is the ballast tanks. The air is let out of them and is displaced by water. This gives the submarine negative buoyancy, which will get the submarine to submerge. By blowing or pumping air into those ballast tanks, the submarine becomes buoyant and rises to the surface.


Does a submarine float?

It floats and sink by changing its buoyancy. The primary method of controling buoyancy is the ballast tanks. The air is let out of them and is displaced by water. This gives the submarine negative buoyancy, which will get the submarine to submerge. By blowing or pumping air into those ballast tanks, the submarine becomes buoyant and rises to the surface.


If a sumbarine submerges what is it doing?

A submarine is a sea going vessel that is designed to run submerged or on the surface of the sea. Basically, by filling ballast tanks with sea water, the submarine will sink, and by blowing out the sea water from the ballast tanks with compressed air, the submarine will float on the surface.