http://www.wallas.fi/index_eng.php?group=2&type=2&ID=1

For a small sailboat this is a good choice if you want to minimize
current consumption. We have one in our Maxi 77, and with a small solar
panel to charge our battery we can in practice run it as much as we
want without worrying.

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C++: The power, elegance and simplicity of a hand grenade.