I don't understand what you are meaning? AIS Msg 1 is for class A vessel position report.
Check Msg IDs and contents e.g. from here https://www.navcen.uscg.gov/ais-messages
If needed to continue about AIS topics, then let's continue that in separate thread....
This is already technically there....the resource provider just needs to send a delta message with the path resources.<res_type>.
The client should see this and update the display accordingly....