On Tue, 22 Nov 2005 00:53:30 GMT, "NOYB" wrote:

Maybe Grady feels that an offshore boat running 20-30 mph in rough
seas could break the through-hull free from the water, causing the pump to
lose it's prime?

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Most A/C circulating pumps are not self priming and have to be mounted
below the waterline. If the through hull is forward, losing prime in
the waves could be an issue I suppose.