Determining Containership Loading Problem on the Basis of an Adopted Number of Handling Cranes

概要

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Faster turnaround time of vessels is one of paramount factors in a container terminal for assuring competitive advantage in the shipping industry, which can be achieved by efficient handling process of vessels, especially the associated loading plan in the loading sequence. This paper deals with the ship loading problem regarding to the number of cranes to be used in a loading process while keeping reasonable ship stability. In order to preserve the ship stability, some heavier containers may be stowed at the bottom of ship holds. When those containers are stacked below others on a yard container block which are withdrawn later, it may required a number of rehandles when they are retrieved from the blocks. The efficient of loading process is evaluated by the minimum number of container rehandles required. To solve this problem, a mix integer programming is formulated. The genetic algorithm, which is widely applied for a plenty of practical mathematical programming, is employed as a heuristic for the nearly optimized solutions and a wide variety of numerical experiments was made where solutions by this problem are useful and applicable in practice.
社団法人日本航海学会の論文
2008-03-25