why do large boats have spouts near water level that continuously dump out water?

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why do large boats have spouts near water level that continuously dump out water?

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Anonymous 0 Comments

Even small boats do this, though you won’t often notice it as its external to the boat coming straight from the engine on small craft. In fact when testing a boat engine out on land they need to provide water.

For a smaller boat it’s often a thing that looks kinda like earmuffs with a hose attached. The earmuff part goes over the engine’s water intake, the hose is turned on and voila water cooled engine on land.

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