The turbines when pointed at the wind are actually not facing the wind. They're at an angle to the wind, which means you're making power from the turbine. As lo

The turbines when pointed at the wind are actually not facing the wind. They're at an angle to the wind, which means you're making power from the turbine. As long as the power made exceeds the wind resistance and rolling friction of the vehicle. Also you might be interest in this: http://www.treehugger.com/files/2007/02/windmill_sailbo.php http://www.treehugger.com/files/2007/02/windmill_sailbo.php I was actually looking for a horizontal turbine boat I saw, but this came up before. However, the question with boats is whether it can beat the current as well.