Found this link for several wind, water, and combined wind/water generators:
http://www.bitterrootsolar.com/hydro/wind-water-generator.htm

A bunch of different ones here, too:
http://www.fourwinds-ii.com/watergenerators.html

One or two up for bidding at this auction site, two-blade models, $200, might want to read about different blade configs at one of the sites above first. A bunch of other marine equipment, too:
http://www.dibit.com/browse.stuff/Marine/Accessories/?thisset=9&showreg=no

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Doug King
M-17 #404 "Vixen"

Montgomery Sailboats Owners Group Web site: http://msog.org
Email: mailto:msog@msog.org