Just stating what I use, not what he should use, just a general data point and not sure down right dangerous, long before AIS a good radar, paper chart and a pair of eyes could keep you out of the way.
Originally Posted by caltexflanc
Nice for a general idea, but far from real time and comprehensive. Dangerous for the OP's application.
iSailor requires a wi-fi connectable AIS receiver or transponder, BTW.