If you are using a Satellite or SSB connection you will need the Offshore App

Please download the Offshore App for free at www.predictwind.com/grib-files/

Tutorials for learning how to use the Offshore App can be found in the Offshore Help

Communication device                  Best Download Method
Iridium GO                                       Offshore App Iridium GO direct download interface
Globalstar                                        Offshore App Globalstar direct download interface
All other Satellite devices              Offshore App with Redport Optimizer direct                                                                        download interface
SSB/Pactor Modem                        Offshore App email request 

You will need the Standard or the Professional Package to use the Offshore App on a Satellite or SSB Connection.