A new system concept used for marine navigation called Global Ship Information (OSI) System is proposed. The system is composed of three infrastructures available for marine use. They are GPS, INMARSAT and Internet. The system is designed to work with automatic ship navigation system or with certain navigational aids such as ARPA. Each ship will access Virtual Vessel Traffic Service (V-VTS) Centre periodically and automatically to update her short-tem navigational plan, after reporting her initial information including her properties, long-term navigational plan etc. when she departed of the first port at the voyage. In return she will receive the same information of her neighbours available also automatically. Thus the automatic navigation system or the ship master (thorugh her GSI-connected ARPA) can eficiently alter her short-term plan, if necessary. The paper discusses the outline of the system and the detail is now being validated by simulation.
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