Understanding Polar Diagrams

Posted by: “C Spear” freespearitsailboat Polar diagrams show the boat speed at various points of sail. Let’s look at the innermost curve (labeled 6.0) as an example. Polar_Diagram_387 Wing Keel, 150 Genoa 1. First delete all the other curves in your mind so you are looking at only one curve 2. Now look at the two scales a. The horizontal scale goes from 1 knot to 9 knots – it represents boat speed b. The vertical scale at the bottom represents wind speed from 6.0 to 20 knots c. The numbers on the outside of the half-circle represent the angle you are sailing relative to the true wind direction – straight up (0 degrees) is directly into the wind and straight down (180 degrees) is dead down wind 3. Back to the inner curve the true wind speed is 6.0 knots (not apparent wind speed) 4. Following that inner

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Winch Rite — Review

Posted by: “Joseph A. Revak, DMD, MAS” joenopain1 Thu Aug 11, 2011 5:01 am (PDT) I do have the Winch Rite. I only use it for raising the main. It would be to bulky for jib sheeting. I like it for the main. I also have the Tides Marine Strong track system. When I first got the Winch Rite I used the slow speed to raise the Main, now I use the higher speed and it does just fine. A LOT less work for my back. It is usually Diane and I on the boat so, as someone said with the Strong system I could raise the main at the mast easily, but we always raise the Main from the cockpit and there is the additional resistance from the blocks. Where I really like it is at the beginning of the season while I feed the jib into the

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