Ever since the requirements set forth in the new Chapter 5 of SOLAS-74 Convention, adopted in IMO Resolution MSC.99(73) dd. December 5, 2000, came into effect, the AIS (Automatic Identification System) has been mandatory ship equipment for a major part of the world's sea fleet. On the whole, AIS systems, just like electronic chart systems (ECDIS and ECS) and other navigation aids, are intended for the improvement of safety at sea. As the AIS market is currently at the development stage, and holds quite definite prospects, we will consider the practical use of the AIS by ship handlers, as well as the practical advantages and feasibility of integrating AIS with electronic chart systems.