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  • PassageMaker

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    Feb 15, 2022 3 minutes

    Automobile engines are (mostly) water-cooled, but also have a radiator to cool the liquid coolant. Boats are also (mostly) water-cooled, but they have heat exchangers that use seawater to cool the liquid coolant. It seems to me that anytime seawater is introduced into a system, trouble is not far behind. Why don’t boats have radiators like cars do?—Lisa Olson

    You are not the first person to ask that question. And interestingly, there are a few boats out there with air-cooled engines. The amphibious World War II DUWK boats and airplane-propellered swamp boats

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