COOLING SYSTEM FOR A SMALL VESSEL

摘要

To provide a cooling system for a small vessel which can prevent corrosi on or freezing in a water channel. Water outside the vessel is fed through a pump 30 and piping P1 or the like to a cooling object in the vessel and cool s the same, and then is drained from the vessel. Drain hoses DH1 to 3 are connected to portions of the cooling object and piping where water tends to remain, and drain ports DH1a to 3a which are openable and closable are provided at the other ends of the drain hose. A single drain unit DU for opening and closing the drain port is provided at the drain port of the drain hose.