50 knots - under sail

Not So Fast: Kiteboarding Dispute Sinks Sailing Record

By CHRIS MUSELER

Published: November 27, 2008 - New York Times

The World Sailing Speed Record Council belatedly decided to dismiss the mark set by Sebastian Cattelan in Namibia because he broke the 50-knot barrier on a kiteboard.  Here's the video.  The headline above gives you the NY Times story.