If you go offshore, remember to save your Navionics charts on your device, this will allow you to reinstall them without an Internet connection.
Here is the procedure:
In SailGrib WR, go to the Settingsmenu > Charts
Press the Backup your Navionics charts button
Confirm backup
If you “lose” your Navionics charts offshore or need to reinstall the app, you can then recover them with the following procedure:
Go to the Settings menu > Charts
Press the Restore your Navionics charts button
Confirm restoration
Note that you can do the backup procedure manually using a file manager.
Copy the entire
Android/Data/com.sailgrib_wr.paid/files/com.sailgrib_wr.paid/Navionics
directory to the
sailgrib/navionics_backup
directory on the main memory of your device (eventually create it).
Once you have erased the SailGrib app data, restore your Navionics charts: Settings>charts > Restore Navionics charts.