Join Date: Jun 2000
Location: CT/ Long Island Sound
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Re: Polar Diagrams
US Sailing has polars for just about anything with sails that floats, but they're not free or cheap. I believe their diagrams show angles of attack from closer to 0 degrees to 180. You can also create your own diagrams empirically, but it's a lot of work to document all the wind speeds, angles, and boat speeds.