The process of navigating a sea-going ship heavily depends on decision making. The decisions result from performed transport tasks - carriage of cargo and people as well as the current and predicted navigational situation. Increasing amount of available information and growing complexity of technological systems used make information management and relevanfdecision making so difficult that it may result in wrong decisions, particularly in emergency situations. Maritime administrations have implemented special procedures of watch keeping and those in emergency. Such procedures are helpful in making the right decision. The procedures, however, are not helpful in accelerating the processing of a load of'infor- mation a navigating officer is surrounded by. One method of solving the problem is the application of artificial intelligence for searching for necessary information. This article analyses possible ways in which a navigator can acquire, process and use a large amount of information in decision making process. A concept utilizing artificial intelligence tools for navigation support system in navigationally difficult areas is presented. The article discusses goals such a system should achieve for the ship to follow a preset trajectory and to avoid collisions. The information provided herein outlines the construction of such a system and may be useful in research into the problems of designing navigational decision support systems.
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