PostHeaderIcon Polar Diagram

Polar diagram — a graphical chart that plots target performance data for a specific boat. Includes theoretical boat speed and heeling angle for every true wind speed and true wind angle combination, along with the associated upwind and downwind VMGs; i.e., velocity made good against the wind direction. Also known as a boat performance table and polars. See also: isochrone and velocity prediction program. Compare to: sail crossover chart.

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