Originally Posted by DINKS14
The condensation mostly comes around portholes in the walls, hatches in the ceiling...like the one over our bed, and under our mattress. We just spent the weekend cleaning the ensuing mildew...good times, but the beer was tasty when it was done....
Storm windows can help, both with heat and water dripping from the glass. Generally something very simple is possible that fits into the existing windows.
Sail Delmarva: A Few More PDQ Upgrades
On the non-opening hatches we have external Sunbrella covers that also help.
Eliminating moisture sources is also vital:
* dry bilge
* dry the shower after use, install small head fan, and shower ashore
* limit boiling when cooking
There is an article on desiccants coming out in Practical Sailor, but that is only for sealed storage, not live-aboard.