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post #3 of Old 04-01-2019
colemj
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Re: Generic Polars

Not really. Actually, published polars for most boats will never be reached because they are calculated using very optimistic data.

However, it is easy to make your own polars if you can get boat data into a computer. OpenCPN has a polar plugin where you simply sail the boat and it collects polar data and makes it into a plot. There are phone/tablet apps that do the same.

Or just go sailing and take some general notes about wind, speed, angle, etc - then make some tuning/rigging/trim changes and see how that effects things in general.

One usually only is interested in polars for upwind work to determine optimum VMG, and most people find they understand this intuitively after sailing their boat for a while.

Mark

Dolphin 460 Catamaran "Reach"
Manta 40 Catamaran "Reach" - For Sale!

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