3D LAYOUT™ ... defines the structure of the sail

3D Layout is used to define the structure of a sail in terms of yarn layouts, panel layouts, tape layouts, yarn density, and/or film types. Output from 3D Layout is used to shape 3DL molds or provide seam curves for paneled sails. All yarns are plotted in the same 3-dimensional space they will assume when sailing. 3D shapes are translated into panel layouts for downwind sails. 3D Layout also has powerful analytical tools which can be used independently or in conjunction with Membrain.
Left : Strain analysis for a 3Di mainsail. Right: Major strain trajectories for the same mainsail.© North Sails
Comparison of sail modulus between two different yarn layouts for the same jib.© North Sails