Draft Stripes
Contrasting horizontal stripes that run luff to leech help trimmers visualize the aerodynamic shape of the sail. UK Sailmakers applies draft stripes at several different heights so that sail shape at the top, middle and bottom of the sail can be seen. Draft stripes can also be used in digital shape analysis software, like UK Sailmakers’ AccuMeasure that you can download for free.
Click here to download AccuMeasure.