Vessel finder

AIS (Automatic Identification system), it is used for tracking, identifying and locating vessels by exchanging data with nearby vessels and VTS stations.

AIS transponders send data such as: their position, speed, name, IMO and MMSI number, size, draught, etc. This information is transmitted to the AIS receivers at regular intervals via an UHF radio.

There are 26 different types of messages capable of being sent by an AIS transponder. AIS vessel tracking systems are intended to be used from ship owners, coastal services and maritime authorities. Main purpose of AIS is to be used for collision avoidance and determination of the risk for it, but not for automated collision avoidance system. Such system would not be useful because of the limitations of VHF radio communications and because not all vessels are equipped with AIS.

AIS is also used for creating vessel tracking systems for monitoring the sea traffic and providing information about each ship - its name, flag, course, position etc. This technology is extremely useful for investigation of rescue operations and marine search. Here AIS can provide additional information and awareness of the resources for on scene operation.

AIS information received by VTS is important for accident investigation to provide the accurate time, identity, position, compass heading, course and Speed of the ship.

AIS data is available online on the Internet in our website, where you can search vessels by name, MMSI, IMO or Callsign. You can see the vessel visualized over Google maps with information about position (longitude, latitude) course and speed, MMSI number, flag, type of the vessel etc.