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Re: Condensation inside sailboat...
This would be on how to manage condensation and you don't have a dehumidifier and need to do something right now. This comes from a grade school science project and modified for this purpose.
Plastic attracts moister and dead air space is the best insulator. If you take a piece of plastic tarping, like 4 mill and secure it to the ceiling, I know this will not be easy to do, but if you dry an area and use duct tape, it should hold. It needs to be air tight. Now pitch the plastic with weight on top of the plastic. like a bolt or a small fitting, not too heavy, but heavy enough to pitch the plastic to that point. Yes this will need to be done before sealing the plastic.
Now here is the theory, you are adding a layer of insulation (dead air space) to the ceiling, helping with heat loss and moving the condensation to the underside of the new, tarp, ceiling. The water will condensate here and run down to the weighted point and drip off into...sink or bucket.
I know this is OT to the OPs post, but I thought it might help others here.
1968 Bristol 32 Keel/Crb Hull 26
Narragansett Bay RI USA