more boat fires are started by pressurized alcohol stoves than any other. Non-pressurized units are considered only marginally better. Even kerosene stoves are high on the list (most started by alcohol preheat of course).

What is the safest rated system by insurance underwriters? Propane systems, installed to code, according to her information!

I have used all of the above over the years and tend to agree with the insurance underwriters - using propane for the last ten years has been pretty much drama free. Systems can be expensive to install correctly, but once in, they are safe, convenient, and cheap to operate.