![]() ![]() Have an AIS question not answered here?ġ.Can AIS be hacked or spoofed? What should I do if I encounter ghost AIS targets?.What are AIS Aton and AIS Aids to Navigation Reports?.Can I use AIS in an emergency or for distress messaging?.Can I use AIS to mark nets, pots, traps, moorings, offshore platforms, rigs, or as a race marks, etc.?.How can I get a copy of an AIS presentation I saw or heard about? You can download recent presentations given by the Coast Guard Office of Navigation Systems?.Is the USCG considering expanding AIS carriage to other vessels or outside of VTS areas?.What are the differences between AIS Class A and B devices?.Why do I sometimes see more than one vessel with the same MMSI or vessel name (i.e.Why am I unable to see an AIS vessels' name or other static information (dimensions, call sign, etc.)?.Why have some AIS units stopped broadcasting valid position reports?.Are fishing vessels subject to AIS carriage, and, are onboard Vessel Monitoring Systems (VMS) an acceptable substitute for AIS?.Will it be necessary to have electronic navigational charts for use with the AIS?.Does the installation of the AIS require additional equipment in order for the AIS to operate properly?.How does AIS help to increase security (and what is NAIS)?.Do AIS Class B devices meet current USCG AIS carriage requirements? What are the differences between AIS Class A and Class B devices?.What is the AIS rule and are there alternatives to the rule for small businesses?.How do I register (obtain an MMSI), install, encode, and verify my AIS?.ShipPlotter supports several chart formats and has the most advanced interface for AIS processing. The tool is not completely free (it is $25) but provides unique abilities to decode AIS signals directly from scanner discriminator by using the sound card of your PC. AISDispatcher is also available for Linux.ĪISHub also provides free version of the commercial AIS viewer VT Explorerģ) ShipPlotter ShipPlotter was the first AIS sharing center. It runs from system tray and does not require a lot of system resources. AISDispatcher is very light weight and the user can create complex structures of cascade connected instances of AISDispatcher. Until then the only possible solution for AIS data sharing was ShipPlotter. Two years ago AISHub team released the best free AIS data forwarding utility - AISDispatcher. Currently the number of the ships in AISHub server is between 6-7K. Each member of AISHub shares his own AIS feed and receives access to all other feeds. ![]() It is precious resource for AIS professionals and software developers. ![]() MarineTraffic has been developed by the Aegean University.ĪISHub is the only one free AIS sharing site which provides raw AIS NMEA sharing instead of visualization. Currently (Sept.2010) the number of the ships in their site reaches 18-19K. MarineTraffic uses Google Map technology for visualization of the ships. Here I will review only the top 3 of them: MarineTraffic, AISHub and ShipPlotter. The low price of AIS receiving equipment and simplicity of installation led to constantly increasing number of free AIS tracking web sites - amateur and professional ones. AIS tracking become mandatory on all ships since 2004. ![]()
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