What is the purpose of an evaporator in a ship's engineering plant?

The evaporator in a ship's engineering plant serves the essential function of converting seawater into fresh water. This process involves heating seawater to create steam, which is then condensed back into water, effectively removing the salt and impurities present in seawater. The fresh water produced is crucial for various onboard necessities, including drinking water for the crew, boiler feed water, and other operational needs. This function is particularly important for vessels operating far from land, where access to fresh water is limited. By utilizing an evaporator, ships can ensure a reliable supply of clean water during extended missions at sea.