Power draw on a liveaboard boat

[SVAuspicious]

I live aboard my 40' sailboat. I run everything except a/c off one 30A circuit, including *way* too much computer equipment. As it happens, I don't use a coffemaker (percolator instead), but otherwise I basically live as I did ashore.

I have a second 30A input for the a/c (a 12k and a 7k BTU unit). For winter heat I use a Webasto diesel heater, but if I was going to use electric heat I would put carefully labeled outlets on the a/c circuit to plug ceramic heaters into (again, distributing loads across the two inputs).

On shore power, the big consumers for me (from biggest down): a/c, water heater, battery charger, computer equipment, little stuff.

[Trekka]

Originally Posted by theartfuldodger

Well for heat we live aboard our 33 O/I Morgan in Newfoundland and use one 1500 watt heater, and only turned to the second postion, this gives us lots of heat, sometimes we open a hatch to just cool.

That's a lot less than I would expect. Have you insulated? If so, what did you do? Do you really have warmth from the forepeak to the aft cabin during winter?

thanks