Synchronizing User Data Across the Garmin Marine Network
Before you synchronize the user data across the network, you should backup your user data to prevent possible data loss. See Backing Up Data to a Computer.
You can share waypoints, tracks, and routes with all compatible devices connected to the Garmin® Marine Network (Ethernet) automatically.
NOTE:
This feature is not available on all models.
Select
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If a change is made to a waypoint, track, or route on one chartplotter, that data is synchronized automatically across all chartplotters on the Ethernet network.