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Originally Posted by killarney_sailor
A hint for your boat - have all of the ventilation you can manage for the tropics. We have everything open all the time and it is winter here
Yes, I am researching that currently. It's a steel boat with decent hatches, but no dorades. I'm thinking of getting at least four for ventilation. I already have circular portlights for the pilothouse. I am also referencing a good book on the subject: "The Warm, Dry Boat", by Roger McAfee. It focuses more on the "warm" as it was written for the Pacific Northwest, but I've picked up on a lot of the theory of reconciling air transfer without getting water inside the boat.
An aspect of steel, of course, is that you've got to insulate the underside of the deck heavily. You also want to avoid condensation. Changing the air is necessary, and from end to end. I envision things like 12 VDC muffin fans in the bilges to help suck the cool air up and push the warm air out. We already use those nylon windscoops and I can see having them on every hatch at anchor.
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