Challenge makes two versions of many of its super premium & premium woven dacrons. We engineer different constructions to align the strength of the fibers with the load direction of the sail. One is not better than the other. They are both engineered for a specific application. 

We design constructions to align the strength of the fibers with the load direction of the sail. As seen below, a high aspect sail has a different loading direction than a low aspect sail. They would use different cloth. 

A high aspect sail is tall and thin. It generates the most load along the leech. A High Aspect cloth generally has larger fill yarns and is very strong in the fill direction. The warp yarns almost touch each other in the weave, creating tunnels in the construction which keeps the fill yarns geometrically straight and low stretch.                                                                                                                                                                                                                                                    

 

What does high aspect cloth look like?

 

High Aspect sailcloth has very large fill yarns and is very strong in the fill direction. There is a high quantity smaller warp yarns that are crimped. As shown in the picture to the right, the warp yarns (vertical) almost touch each other, creating tunnels which keep the fill yarns geometrically straight, which generates low stretch. 

Read about Low Aspect Cloth (click here).