Gps-speedsurfing
http://www.windsurfingfins.co.uk/prod5.asp?ID=286&offset=&prod_id=305&grpid=305&#prod_anchor

New From Curtis a range of modern speed fin designed for easy use at high speeds. The 10% foil is engineered to create sufficient enough lift while the 50 degree rake creates a forgiving character . Curtis maintains that the technical data on this foil is capable of over 50 knots in the right hands.

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