Ok, but as I have said, I want a "Portable" unit.. I know that there
are many models of gps/ploters that are AIS enabled, like those more
recent units from Garmin, Navman, Raymarine, etc but none of them are
"portable" (that is, battery operated and easily removable to be used
in another boat and at home).

Of course, the ideal for me would be a portable or handheld unit wicth
would be a combined "Gps-Plotter-AISReceiver" all in one, but in lack
of integrated AIS, the unit could be at last AIS Ready, using a
external AIS Receiver, preferentially, with integrated Bluetooth.

The classical "Nasa AIS Radar" was a very good idea, since in reality,
we really do not need a chartplotter, but it is not portable and not
weather proof to be used in the cockpit.

Thanks

Pascal