Last I can think of was at the last SailGP event in Bermuda. 3 boats side by side at the first mark! Anyone else? SailGP Taranto is on this weekend. Watch out for the replays. Only 8 knots forecast so maybe not another 50. Could they do 40 in a gust?
Britain 51.18 knots
France 50.48
Australia 50.02
(Assuming they used approved GPS)
www.gps-speedsurfing.com/
On the homepage the top right corner gives a list of this years top 10. The speed given on the front page is average of 5 best 10s runs. The top 4 have peaks over 50.