You can now import a polar file using the 'Import Polar' feature on the Advanced Polar section of the Weather Routing Preferences.

  1. When on the Weather Routing Page of the Forecast Website, Click Routing Preferences:

2. Next Click on the Advanced Boat Type section:

3. Click the 'Import Polar' Button to import your '.txt' or '.pol' polar file.

4. '.txt' format

The PredictWind polar format must have a '.txt' file extension or the import will not work. There are also a few other format rules that the file must follow or the import will be rejected:

  1. First column must have TWS's, increasing down the column.
  2. Each row must have TWD/TWS pairs delimited by a space or tab,
  3. Each row cannot have duplicate TWD values and also must have TWD values increasing across a row from left to right
  4. You can also refer to: http://help.predictwind.com/en/articles/2884506-how-to-set-up-boat-polars-all-platforms for more deatils on the PredictWind polar format.

5. '.pol' format

The '.pol' format is a table format of TWS's across the top row and TWD's down the first column. See an example below:

4 8 12 16 20 25 30

36 2.85 5.34 6.54 7.03 7.23 7.28 7.15

40 3.23 5.88 7.02 7.48 7.68 7.79 7.77

45 3.63 6.39 7.48 7.89 8.11 8.20 8.24

60 4.73 7.48 8.34 8.69 8.92 9.10 9.20

75 5.15 7.87 8.85 9.21 9.42 9.65 9.81

90 5.17 7.95 9.01 9.57 9.83 10.12 10.35

120 4.45 7.50 8.87 9.73 10.43 10.96 11.42

135 3.63 6.66 8.34 9.32 10.16 11.18 12.12

165 2.33 4.70 6.72 8.16 9.11 10.09 11.17

180 2.12 4.31 6.27 7.78 8.80 9.74 10.69

  1. The first cell of the table should be blank.
  2. Wind speeds must be increasing across the first row from left to right.
  3. TWD's must be increasing down the first column.
  4. All table body cells must have values.

Please contact support@predictwind.com if you are having problems importing your polar files.

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