Heater Idea

[Uber Affe]

I live in Texas so I wear a leather jacket and keep my coffee thermos between my legs.
Apart from that...any marine heater will work....Try a local boating supply store.
Where ever you live...England, Greece, Nova Scotia...It always gets cold at sea.
There are many brands of heater for small boats which are essentially the same as an eberspacher...and much cheaper.