A marine heat exchanger is an essential component found on boats, ships, and other marine vessels. Its primary function is to transfer heat ****ween two separate fluids—typically to cool down the engine or other onboard machinery. This process occurs without allowing the fluids to mix, ensuring that the engine coolant remains clean while efficiently dissipating heat using external water sources, such as seawater. This system helps maintain optimal engine temperatures, enhances performance, and prevents overheating, all of which are vital for the safe and reliable operation of marine vessels.