Originally Posted by kytkinasetelma
Very common at Finland at steel boats or catamaran flatbeds.
Never heard that anyone had build it to fibreglass boat.
What do you wanna know?
It would have to be a fairly big boat I'd imagine and a fairly small sauna. Like a one person cabin.
It's a difficult build I'd imagine. I'm leaning towards getting something portable that can just be taken onboard when needed. A portable sauna or a sauna blanket maybe?