Zero to Cruising
No More Holes In The Boat
Zero to Cruising Rainman Watermaker
"I first read about Rainman Watermakers (desalinators) some time ago, and I admit that I was very intrigued by the concept. I don’t typically write about products unless I have first-hand experience using them though, which is why I have, until today, failed to mention this unique concept here on this blog. When I noticed that our boat neighbors, Gary and Marie, had one on board, and seemed to be using it quite regularly, I made up my mind to invite myself over to check out their system. Gary was more than accommodating, welcoming me onboard to give me a complete overview of how the watermaker works. What I learned follows below. The system that our friends have on their boat is completely portable. They keep both the membranes and motor unit stored in a locker when not in use, but I understand that it is possible to mount the membranes more permanently, and that some people prefer that type of installation.
The entire system can be seen below. This is the self-contained gasoline version. There is also an electric version designed to run off a Honda 2kW generator, or equivalent. Purchasing that model would obviously make sense if you already own a generator.
The system that Gary and Marie own has a very high output. This dual-membrane watermaker is rated to produce 100-140 lph (23-32 gph). When looking through their literature, I also read that Rainman offers a compact version that produces 50-70 lph, apparently good for those who have less storage room on their boats, and also an “economy” single-membrane unit, also designed to produce 50-70 lph.
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