I've been contemplating for a while
for a hot water system on my little boat
The Bukh engine is seawater cool so been think of running a glind water system as a heat transfer to a small 20 litre hot water system
My thinking is to keep the sea water away from the hot water tank
Any idea you guys

I don't know, there are alternative ideas in point 16 and 17 of:

www.bethandevans.com/pdf/Leftoff.pdf

Which says:

"16. Pressure water. We had pressure water on Silk, but we rarely used it once we had installed
foot pumps in the galley and head. We still had to maintain it, however, and we spent more
time rebuilding the pumps and looking for leaks than we did using the system. Aboard
Hawk, we have again installed foot pumps in the head and galley, and the only thing we miss
is the pressure shower. We use a solar shower when the sun’s out; a teakettle when it isn’t—
and we enjoy showers ashore when we get the chance.

17. Hot water. We had hot water aboard Silk whenever we ran the engine. But we often needed
it when we hadn’t been running the engine, especially on passage, and a solar shower or
heated teakettle offered a quick and easy solution. Aboard Hawk, we use the solar shower in
warm weather. In cold weather when we’re running our diesel heater, we keep a kettle on the
heater’s hot plate for hot water on demand."

Hal Roth in "How to Sail Around the World" says for their showers they placed a trigger operated
shower nozzle on a pump up pressure sprayer, like the ones that are used to spray lawns.

HG do Bulk make a conversion kit from seawater to enclosed coolant system for your motor?
If they do there may be a take off point for a HWS and also provide benifits for the engine.

I'm not sure how well the glind will work using seawater rather than engine coolant.

The picture below is how my Volvo 2003 motor is set up, it was initially raw water cooled.
The bolt head you can see on the side of the circulation pump is the taking off point for the HWS.

It works well, nothing better than a hot shower at the end of the day.

Hi Hg
I thought about doing the same sort of thing with a heavily insulated tank about 20L a glind water heater and a circulation pump.
i'm guessing a well insulated tank might keep the water hot for a hour or 2 after engine is switched off

I came across this a while a go it has some info on bukh setups https://coxengineering.sharepoint.com/Pages/Calorifier.aspx

I'm also very interested in this diesel cabin heater / hot water system

www.dieselheat.com.au/genesis-diesel-water-cabin-heater/

Ive read cox links and many many more Ha Ha
I seem to go around in a circle and start thinking about fresh water cooling for the Bukh and then its not a problem for the hot water set up. Ill keep thinking about it.
I have to come up with the goods some time next year

There was a few stainless steel plate type heat exchanges on ebay a while ago , some have use them for engine cooling some by adding an extra heat exchanger ( buying two smaller units and hooked up in series they were reasonably price.

My Taylor 030 stove should be ok with the oven door open for heating up the cabin enough for me I love to sleep with the windows open and walk around in bare feet in the middle of winter down here hate shoes and mostly wear sandals when I'm out other than my dreaded safety boots at work. which I can't wait to put them in the waste bin when I leave next year.

I too am looking at going down the Glind path for hot water for out trip north next year. Also only have a raw water cooled engine.

We previously had a gas system that I removed for safety reasons (it was very old but still worked). We currently use a couple of solar bags, not much chop in winter or after a long day coastal cruising. But filling them with a kettle (or large pot) will keep the fresh water usage down to a manageable level, as the Admiral does like a longish shower.

If you want a hot shower, what could be simpler than this.