Auxiliary wind propulsion for merchant ships, Sail Freight Int'l, Inc., White Plains, NY. This is the only wind-assist system in the world that ever proved itself to be completely cost effect. Each sq. meter of sail area generates 1 HP when the apparent wind is 15 knots. More wind means more horse power and the ships speed only adds to the apparent wind. The Sail Freight system can be retro-fit onto most all vessels.
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