What is the primary function of a boat's impeller?

The primary function of a boat's impeller is to circulate water. This component is essential in various marine systems, such as cooling the engine, creating thrust in jet propulsion systems, and ensuring that water flows properly through different parts of the boat. In the context of engine cooling, the impeller draws water from the body of water in which the boat is operating and pumps it through the engine, helping to regulate temperature and prevent overheating.

Understanding this function is crucial for boat operation and maintenance, as proper water circulation helps maintain engine efficiency and prolongs the life of the boat's systems. Without a functioning impeller, the engine could overheat, leading to potential mechanical failure and safety hazards on board.