Does someone knows what AIS is about and what kind of apparatus is required
to be able to display commercial trafic on the screen using Fugawi 4 ENC ?

http://207.181.106.97/robin/news_ca_...otation_hr.jpg
AIS - Automatic Identification System Plug in a third party AIS radio
receiver to view commercial vessel traffic directly on top of your ENC or
other chart.