We design them to be quite flat for a spinnaker with a straight leach exit. It has a mid girth of 75% of the foot length so it measures as a spinnaker, but has a much bigger area than a genoa. We fit a low stretch Vectran line in the luff and the sail is tensioned quite firmly to get a straight luff (a lot like a genoa). We have found that these sails reach very well in a moderate wind and their shape and size make them a very effective heavy weather running spinnaker.
#CODE ZERO VS GENOA CODE#
The Code Zero helps a boat’s performance in tight reaching angles, especially in lighter winds by generating much more speed than a slightly eased headsail. The Code Zero is a spinnaker-genoa hybrid designed to operate like a genoa, but considered a spinnaker under racing rules. These sails have been around for about ten years and are now becoming very popular with racing sailors. The optimal wind speed and wind angle for this design is 25 to 35 knots true wind speed and 95 to 170 degrees TWA. spinnaker nylon or laminate spinnaker fabric for the larger boats. They are normally manufactured from 1.5 oz. These sails are designed for very heavy running because of their reduced size, flat shape and extra strong construction. The optimal wind speed and angle for this design is 18 to 26 knots true wind speed and 130 to 170 degrees TWA.
#CODE ZERO VS GENOA FULL#
This design is full cut with a large head angle and big shoulders for maximum projection and power to help get the boat downwind fast. Laminate spinnaker fabric is often used for larger boats. They are normally manufactured from 1.0 oz spinnaker nylon. These sails are designed for medium to heavy running and are a maximum are spinnaker. The optimal wind speed and angle for this design is 9 to 24 knots true wind speed and 85 to 135 degrees TWA.Ĭode 4 S (medium-heavy running spinnaker) This design is much flatter with a smaller head angle and less shoulders than a running spinnaker. These sails are designed for reaching and are normally manufactured from 1.0 oz spinnaker nylon or laminate spinnaker fabric for larger boats. The optimal wind speed and angle for this design is 5 to 18 knots true wind speed and 170 degrees TWA. They are designed with maximum fullness and large head angle with big shoulders so that they fly with maximum projection and power. These sails are designed for light to medium running and are normally manufactured from 0.6 oz spinnaker nylon. The optimum wind range and angle for this design is 1 to 8 knots true wind speed (TWS) and 80 to 150 degrees TWA.Ĭode 2 S (light-medium running spinnaker)
You need to sail tighter true wind angles (TWA) to get the best performance from these spinnakers. They are designed with a medium fullness and moderate head angle and shoulders so they fly easily in very light winds. These sails are designed for very light winds and are normally manufactured from 0.5 oz spinnaker nylon. The codes for spinnakers that are commonly available are as follows:Ĭode 1 S (light running and reaching spinnaker) Building on this I will share some tips for trimming your spinnakers for optimum performance in a range of wind conditions. To clarify the available choices, I have listed each spinnaker type with an explanation of its use. We have Code O’s, asymmetric spinnakers for running and reaching, multi purpose spinnakers for cruising and symmetric spinnakers for running and reaching. Choosing the right sail for the conditions is the difference between winning and losing, or between languishing out at sea and being safe on your mooring. It doesn’t matter if you’re a racer or a cruiser, the vast choice of spinnaker types and designs available today makes choosing the right spinnaker complicated. Good downwind performance can be the difference between being first across the line or being pipped at the post. (Extracted and and adapted from an article by Ian Short, first published in Australian Yachting, September 2010)
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