Abstract
In this Paper, the authors have discussed their research on an expert system which has been developed by them and is intended to be able to cope with tactical problems after the fact or collision accident at sea. The expert system is written in Prolog, is implemented in mini-computers (UX-300/UX-700), and consists of a knowledge base which contains more than 200 production rules based upon expertise from an expert or captain and some literatures, an inference engine, and interfaces. According to the analysis of experimental simulations (21 cases) of the expert system, it is said that the system provides consultative advices, within a few seconds, to a captain or navigator in the navigational bridge about adaptive decision making when ship has collided with another ship. One of the outputs (hard copy) of the simulation is shown.
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