That's my A-class on the video that someone ripped to youtube. You can find the original video on the homepage below, it's on my home server with adsl (1 Mbit) so be patient and save it to your hard drive before looking at it. The mast is a standard Marstrom that is quite soft and the spi is a landenberger 17 m2 spi. The boat is a dream to sail with spi, 8 knots of wind and you are on the trapeze flying downwind! I just sold it but will order a new A-class early next year. Marstrom with curved centerboards, spi kit and integrated halyard in the mast to remove some windage.

Check this link for more info about the boat and performance,
http://www.webbo.dyndns.org/~sailing/spi/index.html

/hakan