Cooling of the main engine is one of the basic necessities to run the engine efficiently and thus, we require a Jacket Water Cooling System of the Main Engine on Ships.
The jacket cooling water temperature of the engine should be maintained at least 60 deg C for the main engine and 40 deg C for the auxiliary engine.
If these high temperatures are not taken under control then it may happen that the engine components fail or may lose their material properties.
Thus, the engine has to be cooled...