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27 Ιαν 2024 · An automatic Identification System (AIS) is an automated tracking system that displays other vessels in the vicinity. The broadcast transponder system operates in the VHF mobile maritime band. Your ship also shows on the screens of other vessels in the vicinity, provided your vessel is fitted with AIS.
AIS enables authorities to identify specific vessels and their activity within or near a nation's Exclusive Economic Zone. When AIS data is fused with existing radar systems, authorities are able to differentiate between vessels more easily.
AIS 1 - 161.975 MHz - channel 87B (Simplex, for ship to ship) and AIS 2 - 162.025 MHz - channel 88B (Duplex for ship to shore). AIS use Self-Organizing Time Division Multiple Access (SOTDMA) technology to meet this high broadcast rate and ensure reliable ship-to-ship operation.
AIS transmits, automatically and at set intervals, dynamic information relating to the ship’s course, speed and heading; static information related to the ship’s name, length, breadth; and voyage-related details such as cargo information and navigational status (e.g. underway or at anchor).
13 Μαΐ 2024 · Automatic Identification System (AIS) is a maritime navigation safety tool that uses radio signals to exchange real-time information between ships and shore-based stations. It helps vessels identify and track each other, preventing collisions and enhancing communication.
12 Σεπ 2019 · Automatic Identification System (AIS) is an automated tracking system that displays other vessels in the vicinity. It is a broadcast transponder system which operates in the VHF mobile maritime band. Your own ship also shows on the screens of other vessels in the vicinity, provided your vessel is fitted with AIS.
3 Αυγ 2020 · How the automatic identification system works. The automatic identification system (AIS) works automatically and continuously, regardless of where a vessel is located. There are two dedicated frequencies used for AIS: AIS 1 (channel 87B) AIS 2 (channel 88B). Each frequency is divided into 2250 time slots that are repeated every 60 seconds.
