Polar Speed Chart request

[Dave B.]

I sail on an ODay 25 and have been attempting to locate a set of polar charts to determine target speeds at various wind velocities on different points of sail for the 25. I have calculated the hypothetical maximum hull speed at approx 6.5 knots, but find I can sail under certain conditions, faster. Does anyone have or know where to get a set of polar charts? Has someone out there by chance created their own set from on the water trials?

 

[Don Evans]

U.S. Sailing May Have Them

They have an archive of over 300 models of sailboats. There not cheap, $50 for members and $90 for members. You have to supply basic model info. like keel type, rig type, etc. There difficult to produce yourself, but not impossible. You have to have calibrated and accurate wind and speed data, not cheap to obtain on our relatively small boats. I also have an OD25 and would be mildly curious to have them too, but I'm more a cruiser than a racer , and am to lazy and cheap to buy or produce one. Good luck in your search.Don