sail-performance-testPicture of GPS sail testing a new laminate code zero on clients light displacement 33 foot racing machine. The sail is designed using Sail Pak sail makers software. During testing the sail was digitally pictured and the design to actual flying shape were compared on the Mac Book in the coffee shop afterwards. The exhilarating sail achieved a max speed of 21.7 knots in 24 knots of wet southeasterly winds.