[GPSNavX]

GPSNavX can request GRIBs, but you must set up the OS X Mail application to send emails. GPSNavX will use the very first email account in the OS X Mail Preferences "Accounts" to make the request to SailDocs. Also keep in mind GRIB data is on 1/2 degree increments so you must open a chart that covers at least 3 degrees by 3 degrees before making the request. Suggest using a small scale Great Lakes chart to request from and view.

More info in the help ..

http://www.gpsnavx.com/help/weather.htm

http://www.gpsnavx.com/help/troubleshooting.htm