"Capt.Bill" wrote in message
...
http://www.windvinder.com/index.php?id=14&L=1


Nobody's seen it because it doesn't exist. It is a pipe dream. Notice on the
site there are no photographs of it in action. Just drawings. It can't work.
You cannot harness enough wind power with a windmill on a boat to make the
entire untethered vessel proceed directly upwind. It isn't going to happen
because it defies the laws of physics.

Wilbur Hubbard