
10-22-2007
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Senior Member
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Join Date: Jun 2005
Location: New Orleans
Posts: 1,328
Rep Power: 7
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If you haven't yet, add yarn telltales to your side stays and backstay, just above eye level when you're standing on deck. these show the same thing as your Windex, and you don't get a stiff neck.
The velocity and direction of the true wind and your own boat speed form two legs of a vector triangle, and then apparent wind speed and direction forms the third side of the triangle. Try it on paper (wind 10kn, my speed 4kn, then draw the third line, that's you apparent wind speed and direction.
Or you can do trig, which I forgot. It's simple once you've drawn it out. You have to connect the two legs the "right" way for this to work, it's a 50/50 chance, but once you get it, you'll know. Probably there is a diagram in any sailing or racing manual.
And you're right, if you can keep the heel to 25 degrees or less, you'll be much more effecient upwind. Heel too much, and all your vertical blades (keel, rudder, hull shape) become less vertical, hence 'shorter', and you sideslip more.
I'm probably telling you what you already know on both counts. Keep on enjoying it. Racing makes you a better sailor and you get more familiar with your own boat.
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