Water Desalination by Using the Sun - Will it Work ?

[hummingway]

You can buy household water makers that work on that principle. Electricity to water is high though.

[s/v Jedi]

Here's all the info you need plus this looks a bit as a challenge? : Free Watermaker Project

Also, you could just buy a floating one made for sailors : Solar Still

The first link is interesting...

cheers,
Nick.

[David M]

Ships have had "evaporators" for over 100 years which produce incredibly pure fresh water. Steam turbine ships require a source of extremely pure fresh water.

Perhaps something with a much scaled down similar design could be adapted to a pleasure boat?