Assessment of AIS Vessel Position Report Under the Aspect of Data Reliability

Open access


Since its introduction the Automatic Identification System (AIS) has played an important part in improving safety at sea, making bridge watchkeeping duties more comfortable and enhancing vessel traffic management ashore. However the analysis of a AIS data set describing the vessel traffic of the Baltic Sea came to conclusion, that specific parameters with relevance to navigation seemed to be defective or implausible. Essentially, it concerned the true heading (THDG) and the rate of turn (ROT) parameters. With the paper we are trying to clarify, which parameters of the AIS position report and to what extent, are affected. The detailed data analysis gives answers on how reliable the AIS data in different traffic areas is.

[1] [ITU-R M.1371-3] ITU Recommendation M.1371-3: Technical characteristics for an automatic identification system using time division multiple access in the VHF maritime mobile band.

[2] [LLI], status of April 2012.

[3] [NMEA 0183] Standard for Interfacing Marine Electronic Devices, AIS VHF Data Link Message VDM Sentence Encapsulation.

[4] [SOLAS] Safety of Life at Sea Conventions (SOLAS), Chapter V, Regulation 19.

Annual of Navigation

The Journal of Polish Navigational Forum

Journal Information


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 39 39 14
PDF Downloads 6 6 2