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Symmetrical Spinnakers: S2 Light Air Running
AWS 6-18 kts
Mid Girth 100-105% of foot length
Full Girths and full shoulders
Light cloth to help the sail project in lighter winds
The S2 is the most used spinnaker on a boat since most races are sailed in moderate winds. In fact, if a boat only has one spinnaker, the S2 is THE spinnaker. The sail is the most versatile in an inventory since it gets used for light air reaching with the apparent wind just aft of the beam to dead running in winds over 15 knots.
The heart of faster spinnakers is the construction method. The panel layout UK Sailmakers uses is called Matrix, which is a full radial layout that features narrow panels, each oriented to better align the threads in the cloth with the primary load-paths in the spinnaker. This is the most effective way to reduce distortion and make the strongest sail for its weight.
Each panel is shaped on all four sides in order to create a smooth round sail. For one sail to be so versatile, it needs to hold its shape without distorting. Distortion becomes most obvious when close reaching. Spinnakers made with generic nylon cloth stretch in the middle, causing their leeches to harden or hook; which reduces driving power, creates drag, and increases heeling. The only way to prevent distortion, without using too heavy a fabric, is to use performance nylon spinnaker cloth like those made under the Superkote and Airx names. These materials have the same strength and stretch resistance as one weight heavier standard nylon.
Spinnaker Painting Program
Use this program to create a custom look for your new spinnaker or cruising spinnaker. Click here to go to the Spinnaker Painting Program.