Jim Richardson wrote:

yeah, and distillers make sense on big power boats, like fish
processors, and lux yachts, can't see them working that way for a 35'
sailboat though...

If the sun is available, solar distilling could easily be used.
Piece of glass (with drainage for distilled water) at an angle
over a tub of salt water would work.

Haven't done that my self, but it does sound like a viable
DIY project.
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Katukivien alla on rantahiekkaa.