An Automatic Identification System (AIS) is a shipboard communication and tracking system that automatically broadcasts and receives vessel identification, position, course, speed, and navigational status information via VHF (Very High Frequency) radio waves. Operating continuously and autonomously, AIS enables real-time vessel-to-vessel and vessel-to-shore communication, enhancing maritime safety, collision avoidance, and traffic management. The system is mandated by the International Maritime Organization (IMO) under the International Convention for the Safety of Life at Sea (SOLAS) for commercial vessels over 300 gross tons on international voyages, passenger vessels, and certain other vessel categories.
