What a very odd notion. Putting a solid fuel heater on a boat is analogous to installing a wood or coal-fired furnace in the basement of your home - archaic to say the least.
Perhaps we take for granted the practicality, convenience and effciency of our Espar - forced warm air, diesel system. But, when the temperature reaches uncomfortably cool levels on our boat, that bulkhead mounted thermostat, is a wonderful thing.
True Blue . . .
sold the Nauticat