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Not quite so easy, Glenn. I race as navigator and pit on a Jenneau
Selection 37 that is now one of the top boats in Massachusetts. It took us five years racing three or four days a week to get the boat dialed in -- maybe we're just dumb, but our present record suggests otherwise. So if you want to invite us down for a year or two -- your expense, of course ;-) As far as recording polars goes, the package I've sent to two of the posters here, following up on my earlier offer in this thread, will automatically log all you need for polars with very little modification. You would need to be comfortable with Visual Basic. You don't really need polars, however, as all you have to do is sail for the best VMG on your GPS. This suggests that you have someone aboard who knows how to pull the strings just right. Many cruisers could benefit from a season or two of racing on a serious boat -- I certainly did. Since boats in the 30-40' range carry crews of 8-10 people, there is often an opening for one or two novices who may be nothing but movable ballst for almost the whole race. Try your local yacht club. Jim Woodward www.mvFintry.com Glenn Ashmore wrote in message news:YSdgb.46915$sp2.44462@lakeread04... While you guys are working on programs, I want to see one that produces polars from actual data. Say you would set the sea state and then when you get the boat really cooking you hit a button and it records the wind data and boat speed. Then it would sort it all out and plot polars for each sea state. Another option would be to just constantly record the data and then use peak boat speeds maintained for more than say 30 seconds to select the points to plot. It would be really interesting to invite a hotshot crew of racing sailors to sail a boat and produce a set of polars then do the same with your regular crew and try to match the results. It would be a great way to refine sail trim and helm techniques. Willem Amels wrote: Hello, We have a tool under development which graphs wind speed and direction and much more. You can set the time span from 1 minute until 16 hours and the program offers many options for filtering and averaging the data. If you combine it with a screen capture facility and automatic FTP it may do the job for you. You can download a 30 day trial version at: http://www.nauticis.com/download/supernova.rar Willem Amels |
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