TOP SPEED = 43.35 knots
Extreme 50, is the newest creation of Lindsay Cunningham, who designed the current
speed sailing record holder, Yellow Pages Endeavour (YPE). The new rigid sail is of
smaller aspect ratio than YPE's and is assymetric in profile. The wing can also be
inclined 3 degrees to windward, like on a windsurfer. To increase the sail area to
the C class, the wing can be extended below the support beams. The leeward support
beams, have a wing flap, which provides additional lift at takeoff, and added down
pressure on the hulls for increased stability at high speeds. There are now 4 smaller
inclined foils on the rear hull for directional stability. The improved design should
increase the performance over YPE by about 14% according to the designer. In winds of
18-20knots, Extreme 50 has reached 43.35 knots
(Translated and summarized from Voiles & Voiliers)