ehh, that would have to be rephrased too :

... Yesterday the Lüderitz Speed Challenge saw Sebastien Cattelan of France become the first human being to sail at more than 50 knots (93kph) USING A WATERBORN CRAFT. ...

Even a nitwit like myself have been doing 500 mtr runs at or just over 50 knots using 20 year landyachts and a track only 10 mtr upwind from these Kite Dudes (the dry part of the beach right next to the 20 cm deep water they are using). My class 3 landyacht friends/collegea's are doing around 65 knots on the same track with homebuild rotating mast cars and 7.5 sq. mtr sail area. And lets not forget about the kings of sail speeds the iceyachters who laught at those speeds.

Wouter