Abstract
The ship routing problem can be known as a multi-objective problem. Since the operation strategy is influenced by ocean environments, e.g. wind, waves or ocean currents, it is therefore weather routed. In this study, the three-dimensional modified isochrone (3DMI) method utilizing the recursive forward technique and floating grid system for the ship tracks is applied to globally search for the optimum route. The proposed method considers two types of routing strategies, i.e. ETA (Estimated Time of Arrival) routing and FUEL (FUEL-saving) routing, with different constraints, such as land boundaries, significant wave heights, engine revolution speeds and roll responses. As a result, it is verified that the robustness of the proposed method appears to be a practical tool by adjusting the safety threshold for the trade-off of ship efficiency and economics.
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