As the results of amendment of the SOLAS chapter V, Automatic Identification System (AIS) was introduced to ships of 500GT and upwards to domestic sea area. The AIS provides new ways to gather information of other ships around own ship and send own information to the other ships and land stations. The new information has great potential to enhance navigation safety. In this article, overview of the functions of AIS, current situation and some future ideas of the use of AIS are introduced.
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