Extreme 40
Introduction The '''Extreme 40''' is a class of sailing catamaran created by TornadoSport and designed by Yves Loday. The boats are 40 feet long and are constructed out of carbon fibre. They have a top speed of about  and can sail at about  in 20–25 knots of wind  The first extreme 40 was launched in 2005.They were sailed in the Extreme Sailing Series, formerly known as the iShares Cup. Extreme 40s are essentially a scaled-up version of the Tornado sailboat used in The Olympics. Extreme 40's are  long, have a  beam, displace  of water, have a mast height of  and a claimed top speed of . The mainsail is  and the jib is . The gennaker used for downwind sailing is .
References
External links *https://web.archive.org/web/20121217004725/http://www.extreme40.org/