This plugin creates optimized weather routes using isochrone method and
predictive grib data or averaged gridded Climate data based upon constraint
settings, start and finish information and boat performance calculated using
boat specs or polar data.

Use the Grib Plugin (included now with opencpn) and recently downloaded grib
files for completing grib predictive routing (1-8 days).

Use the Climatology Plugin to find cruising routes, (most useful in prevailing
winds areas)

Use both grib and climatology data, allowing the grib's route to be extended
past time/range, or to use current data if the grib does not contain it, or to
use climatology to avoid areas of cyclones.