You got instructions by pm and are always the same:
Copy the gmapsupp.img in a Garmin directory in sd, start Homeport.Homeport read locked maps too
If you want to use it in plotter unlock it with gimgunlock.
Fishing charts are available in this map as shown in my screens above. Set in Menu/View/Chart Views/Fishing Chart
Printing restrictions are in every Garmin Bluecharts because Garmin didnt get licence for that.
Garmin does not make their own maps. They buy map data from a variety of providers. Some of these providers give the data to Garmin on condition that users can't print it.
I sent you the link for a workaround to print it.
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