Polar Information

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  • 17th December 2008 at 3:54 am #11049

      Hi HTers

      Has anyone got polar information for the HT27 or 26?

      Thanks
      Ryan

      19th December 2008 at 9:33 am #11771

        Dear Ryan

        I am not quite sure I understand exactly what you are looking for. Are you after design specifications. If you let me know in more detail I will try to help out.

        Regards

        Chrissie

        20th December 2008 at 1:48 am #11773

          Hi Chrissie

          Polar files are used with sailing performance software like MaxSea. They contain an approximate speed for various points of sail/wind speed combination's.
          An example would be at 8 kts of apparent wind at 50 degrees approximate performance is 3kts at 90 degrees 4kts and so on.

          This is usually used for racing, but I managed to pick up MaxSea weather routing second hand which is great for long range planning using it's weather routing and historic GRIB weather files. I thought someone might already have these polar files which will save me sailing around in circles for a few days to record the information.

          21st December 2008 at 11:46 am #11772

            OK I understand now Ryan. I will see if I can find out anything that might help. No promises but I'll do my best….

            Chrissie

            28th January 2009 at 3:48 pm #11774

              Hi Ryan,
              Chrissie asked me to look at your Polar info request. You have explained it well. I doubt anyone has related the HTs performance to Polar info before. I can see the theoretical benefit , however with todays weather patterns that are not relating to historical patterns I seriously doubt the value of the answer you might recieve. Long distance HT sailor Mike Dwyer said of the north Atlantic crossing, His best days run was about 120M and his worse was about 20M Therefore the average speed for the crossing was somewhere in between! That is the reality of long distance sailing. You might hope in an HT across oceans to get somewhere near 3 or 4 knts as an average if you have a good run. The big sister the 38 Ocean Twins gave us 5.25 knts as an average. Good luck with your program. Regards Geoff Linter

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