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...
air pressure because if air is lighter than water and you are trying to get a tank full of water to sink you would need a whole lot of air so by compressing lots of air into the tank it makes the...
There are ballast tanks in a submarine. If the submarine weighs 150,000 pounds, it will push aside, or displace, 18,750 gallons of water. (We're using an even 8 pounds per gallon here.) If the...