My Garmin 556s displays AIS info from the AIS receiver I have fitted, but all you get is a small arrow on the screen and to get advanced details you need to select the target, which is a faff to do when you are underway especially if it is rough or you have gloves on. I would say that if what you want is an 'at a glance' reference of what's around you, you would need a much larger screen so the info can all be displayed properly. If on the other hand all you want is a notification that something is there, I guess it would be ok.
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...
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