Hello Michael,
Indeed, one can zoom, pan, etc... and also, coming back to the AIS question, it is to be remembered, I think, that AIS is implemented on the chart of ShipSim 2006 Pro, and will be also implemented on the Pro Version of 2008. Well, at a higher cost, but justified in my view (not my wife's...)
And another one http://www.hamntjanst.se/ais.htm
and this one, more general, but needing a (free) registration to have all details: http://www.vesseltracker.com/en/Home.html
Regards,
Luc