Ever wondered how does a submarine works? Click here to find out!

A submarine has a sleek cigar shaped body which enables it to move swiftly under water. The submarine contains a pressure hall made up of high strength metal. It contains submarine’ crew machinery and most or all weapons preventing them from getting crushed by the pressure of water when the submarine is under deep depths. A submarine has ballast tanks which are surrounding the pressure hall. The ballast tanks control the buoyancy of the submarine.  

Pressure hall is water tight and air tight and is strong enough to withstand the pressure of the water. The pressure hall is divided into different compartments by water tight bulk heads with water tight doors. These departments include the control room for diving, steering and operating when submerged. The conning tower is above the control room which contains the periscope.

It also includes the pump room, room for storing food and other supplies, battery space, office quarters, crew quarters, sonar rooms, engine rooms, maneuvering rooms for electrical control systems and the torpedo rooms.

To make the submarine dive, the main ballast tanks are flooded with sea water. The additional weight causes the ship to lose the ability to stay on the surface of water.

To resurface the water is blown out of the ballast tanks by compressed air so that the submarine comes up to the water.

Fore planes and side planes are used for steering. Angle of submarine is controlled by tail planes. The propeller generates the thrust to move the submarine forward and backward. It is either engine or nuclear powered. 

Submarines are used in the navy and for sea research.