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.