The sun sets behind the Flettner Rotor Boat as it sits at the Riverside Marina in Fort Pierce, Florida. The boat was designed by John Marples for the Save the Planet on Discovery Channel - Shiny Clouds episode. Thrust is created by rotating the two large rotors, forcing air to speed up on one side and slow down on the other. ..Stephen Salter envisages a flotilla of carbon neutral, fully automated boats, similar to this one, sailing the oceans. He believes he has designed such a vessel employing technology first used and then discarded in the 1920?s.
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