Moisture is definitely a problem for most fuel burning stoves, other than outside vented models. And if you ever have a fire on board, as I did, and you touch off a halon extinguisher, you better have a good source of oxygen. Halon takes it all away. I almost didn't make it out of the cabin when I touched it off. Lungs just lock up. The dive up through the companionway took all the skin off the fronts of my legs. And as an added insult, it didn't keep the fire down. It went out okay, but as soon as the oxygen crept back in the superheated oven reignited the excess kerosene. Eventually a neighbor showed up with a bicarbonate extinguisher which worked. Low tech, but totally trashed the inside of the boat. Pitted every piece of polished metal in the cabin.