Wave-powered Bilge Pump
Tired of returning to your dinghy or daysailer after a heavy rain to find it filled with water? Let the Swedish-made Drainman (or Länsman, as it’s called by its Swedish manufacturer) take care of the problem for you. To use, simply insert the Drainman in between your boat and its painter and then place the attached hose at the bottom of your bilge. As wave action causes the boat to tug at the line, two pieces of webbing alternately compress and release a bellows, which slowly and steadily empties out any water. Or maybe not so slowly: according to the manufacturer, under ideal conditions the system pumps up to 660 gallons in a day. Even at a fraction of that, you’re still moving enough water to empty out a dink in the course of a couple of days.
$45, Jamestown Distributors, jamestowndistributors.com