Closed Cooling Systems

Written by Dina Kayed
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All marine engines need a cooling system to stop them from overheating and subsequently burning out. There are many different cooling systems available for boats, but of course, which one is appropriate depends on the size of the boat and the kind of activity it is usually engaged in. For example a high-speed racing boat needs a much higher capacity cooling system than a small fishing boat that doesn't really go anywhere all day long.

Types of Cooling Systems

An engine needs special care if it is to be able to function at its best and serve you for a long time. The early cooling systems used raw water, which means sea water. Salt is very destructive to engines, and will cause the engine to overheat when salt builds up and prevents the water flow. This is the most unsatisfactory cooling method, particularly in the long term.

The keel cooling system does not really work so well either; it is only suitable for very small boats, or those that do not go further out than shallow water. The best choice for practically any type of craft would be the fresh water closed cooling system. It does not use water from the sea, but rather a full system that carries fresh water in inside pipes to cool the engine down.

Closed cooling systems absorb the heat from the engine effectively to keep it at a constant temperature. It can function more effectively over a longer period, and it is not restrictive like the systems that only work in shallow water or on low speed boats. This type of cooling system will also save on fuel because the engine does not overheat, and will enable the boat the capability of top speeds without the worry of engine failure as a result of overheating.


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