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Old 17-05-2017, 13:52   #16
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Re: Wind Atlas

OpenCpn opensource nav software has two plugins that plot a routing based on polars from the boat (weather_routing) and the Climatology plugin which is essentially a monthy worldwide grib file with all significant climate data based on 30 years worth of monthly averages.
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Old 17-05-2017, 13:55   #17
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Re: Wind Atlas

To that you can add more current grib prediction files for more accuracy.
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Old 17-05-2017, 13:57   #18
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Re: Wind Atlas

PS Keep in mind these are "predictive" and no grib can be considered accurate long term.
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