|AIS - Automatic Identification System|
AIS is the abbreviation of Automatic Identification System. It has originally been developed to support the Vessel Traffic Service (VTS). The VTS is a traffic control centre, that watches and advises the vessel traffic from the coast, to increase the safety on the water. It uses an VHF channel and is in use in all important coastal areas.
The IMO (International Maritime Organisation of the UNO for maritime affairs) now has developed an universal Automatic Identification System (AIS). It uses a new technology, called SOTDMA (Self-Organized Time Division Multiple Access). This divides all AIS-Box data within radio range in a chronological sequence and transmits them on the same channel.
The system works with three different methods:
The channels 87B and 88B are used as local AIS frequencies, expecially set up for AIS communication.
The AIS uses an own GPS receiver and a DSC capable transceiver with two seperate antennas. It communicates with the AIS receivers of all ships in radio coverage. The following data are exchanged:
Possibility to send short messages for safety reasons.
With these data, skippers or traffic centers can locate and identify other ships in the area exactly. They provide you with more detailed data than the ones you get on a conventional radar display.
For the first time it is possible to use the AIS system on a sports boat. So the yachtsman has the possibility to get exact information about the professional ship traffic in his range, to increase his own safety. For yachts we offer the Nasa AIS receiver, the Easy AIS. and the antenna splitter.
AIS receiver wit display
AIS compatible chartplotter:
Easy AIS receiver and Easy Splitter
AIS receiver for recreational use
AIS systems for professional use