Automatic Identification System
AIS (Automatic Identification System) is a system used in shipping to identify ships, including their coordinates, heading, speed and other information (type of vessel, technical characteristics, country of registry, etc.).
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The principle of operation of AIS is based on determining the coordinates, direction of movement and speed of the vessel according to satellite constellations (GPS, Galileo, etc.). Recorded information is received and transmitted between water transport objects (ships and coastal infrastructure) in the range of ultrashort radio waves. To do this, you need to have on board radio navigation equipment operating at frequencies of 161.975 MHz and 162.025 MHz. Communication with the ground is maintained using AIS base stations. Together, this allows for control in the ship-to-ship and ship-to-shore directions, preventing collisions. The AIS system serves as a source of data for ship traffic control centers and rescue services.
- Static information - every 6 minutes.
MMSI identification number, IMO international maritime number, radio call sign, name, type and dimensions of the craft.
- Dynamic information - from 30 seconds to 3 minutes, based on the mode of movement, change of speed and course.
- Coordinates (latitude and longitude), UTCUTC time, navigation status, true heading and navigation angle, real speed, roll and pitch angle, rate of turn and other radio navigation information.
The principle of operation of AIS is based on determining the coordinates, direction of movement and speed of the vessel according to satellite constellations (GPS, GalileoGalileo, etc.). Recorded information is received and transmitted between water transport objects (ships and coastal infrastructure) in the range of ultrashort radio waves. To do this, you need to have on board radio navigation equipment operating at frequencies of 161.975 MHz and 162.025 MHz. Communication with the ground is maintained using AIS base stations. Together, this allows for control in the ship-to-ship and ship-to-shore directions, preventing collisions. The AIS system serves as a source of data for ship traffic control centers and rescue services.
The principle of operation of AIS is based on determining the coordinates, direction of movement and speed of the vessel according to satellite constellations (GPSGPS, Galileo, etc.). Recorded information is received and transmitted between water transport objects (ships and coastal infrastructure) in the range of ultrashort radio waves. To do this, you need to have on board radio navigation equipment operating at frequencies of 161.975 MHz and 162.025 MHz. Communication with the ground is maintained using AIS base stations. Together, this allows for control in the ship-to-ship and ship-to-shore directions, preventing collisions. The AIS system serves as a source of data for ship traffic control centers and rescue services.
February 12, 2022
According to the requirements of the international convention for the safety of life at sea SOLAS 74/88, the AIS system must be installed on ships of over 300 gross tonnage cruising international waters, on ships of over 500 gross tonnage not engaged in international voyages, and on all passenger courts.
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