Water transport is one of the most efficient means of transport. In navigationally difficult areas with high traffic density, VTS (Vessel Traffic Service) systems are introduced to supervise and coordinate ship traffic. Knowledge of the current situation on the fairway and planned traffic in a given time perspective allows for the development of optimal traffic strategies. The article presents a model of optimal ship traffic planning for the Świnoujście-Szczecin fairway in two variants of its complexity. An assessment of the possibility of using both model variants was carried out.Determining the optimal ship trajectory on the fairway with constraints resulting from the movement of other ships can be treated as a control theory problem: determine vi(t), while satisfying the constraints, so as to minimize the total waiting time of the ship for entry into the fairway and the passage of the fairway. However, a ship is an object for which speed control, especially in short time intervals, is difficult to implement. On the other hand, minimizing the ship’s passage time through the fairway leads to maximizing its speed. In this situation, it can be assumed that the ship on the fairway moves at the maximum speeds allowed for a given section of the fairway (simplified model variant). This is an assumption that reflects actual practice in ship traffic. (…)
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Source: Logistyka Magazine