Merry Fisher style boat as cruiser?

[Oscar24]

Well I get water temps of 70-90deg from the thermostats, I'm going to 't' of that to a 4kw heater matrix and see how well it works. If it works well, then further improvements may happen...

Interesting, the output of my 50Hp merc is luke warm at best. Would guess something like 30 degrees C
I wouldn't think the impeller would like pushing water any further than a metre and running through a heat exchanger would increase the resistance to the flow.
I have my doubts this would work but good luck anyway

 

[Beyondhelp]

Happy to update! Will do so when I have had a chance to try.