Stand-alone AIS transponder/receiver systems" are rather expensive.
AIS data are transmitted on 2 VHF frequencies.
Seeing you already have a VHF radio on your yacht, there is no point in duplication by buying a dedicated ais receiver.
To visualize the data, all you need is an additional rc-circuit added to your VHF radio and some decoding software for your laptop.
Then connect the VHF to your laptop for tracking and navigating in real time.
now this is not how I did it I used a Garmin AIS 600 through my NMEA it can then run to any of the screens in the boat including my tv
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