Propane is good, but must be monitored!
I run a propane oven and two burner stove, plus a Force 10 heater on a Cal T/2 and have found the system to work well. There is some moisture build-up when using the heater, but little when using the stove or burners. There is a vent directly above the oven/stove so moisture is eliminated when ventilation is good such as forward hatch and companionway are open. When closed, I run an electric fan that supplies air to the floor area of the cabin so as to not cause CO problems. To make things safe, there are three automatic off gas sensors, one in the keel bildge, one in the engine compartment and one at floor level in the cabin (just to the right of the stove). An additional sensor in the Force 10 is factory set to shut down the propane system at 12 degrees heel so not available under sail. The propane stove and oven is gimbled. Sensors are checked at the beginning and middle of season for reliability.A CO sensor is also in the cabin for safety. 11 pound propane tank(s) are stored on the aft transome in stainless bumper holders so as to keep the fuel outboard. Connections are checked every season for leaks by using soapy water on each connection to detect leaks (so far: none). If moving, the front hatch is always opened and the boat is ventilated to remove any lingering propane before using any of the units. If at rest, the incoming air fan is run for 5 minutes to exhaust any lingering fuel. Whenever a unit is used, at the end of use, the propane sensor valve is shut off and the remaining fuel is used up by allowing the unit to use up the fuel and go out because of no supplied fuel.This may seem to be a lot of little things put together for safety, but an expert in marine units explained to me that propane fuel lines are actually pressure porous and when the pressure decreases, the lines will leak the remaining fuel in the line to make it safe. Since my lines run below the floor, propane would collect in the keel bildge or engine compartment after each use so it is better to be safe than sorry. The insurance company also likes the set up and requires it for coverage.I am still waiting for the cup of coffe from an alcohol two burner from a few years ago. Alcohol is very hard to see burning, where the propane has a blue flame with yellowish top. A detection smell is also added to propane and any smell of propane means find the problem and correct it before lighting a match. Since yours is portable, use the unit in a well ventilated area and there should be few problems.