My AT had "plastic" sea cocks below the water line including engine, gen, in and out plus all the extra aux stuff. First yard visit, had them changed to up-to-date bronze body ball valves (stainless ball) with grease fittings. I sleep better.
People speak well of the 'plastic' hull valves but,.....
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Two days out the hospital after a week in the hospital because of a significant heart attack.
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