The system collects information from the sensors on your ship and sends it to other ships within the range of your ship. In this way, it is possible to quickly get an overview on the manoeuvres, calling signal, name and other relevant informations about another ship.

The range of the system is like VHF, but you also work with long distance systems via satellite. Sending unit can be disconnected in critical waters. The AIS system has been a big security improvement for the professional maritime industry.

The system was pretty heavy on the expenses but now, you can buy a complete system for a very reasonable price.