Diving cell
A dive cell is a tank or container that enables submarines to dive.
So that large submarines can initiate a diving process, depth rudders alone are not enough to counteract the buoyancy of the submarine's body. In addition, in this case the drive has to run continuously or a submarine with a fixed propeller shaft has to keep moving in order to maintain the depth. So so-called diving and control cells are therefore necessary. These are tanks that are filled with water to increase weight when diving and with air to surface. The diving cells take on the main load, the various control cells are used for more precise coordination and trimming when submerged. Filling the buoyancy cells with air is called blowing on (or blowing out ).
The down rudders only take over the fine-tuning when the submarine is submerged. Only small submarines do not need diving and control cells, but can instead reach their diving depth via dynamic depth control. This technology is mainly used in unmanned submarines ( diving robots ) and in model making.
