Abstract
This study deals with the containership stowage problem, determining how to stow containers to the containership slots. To improve the containership operational efficiency and meet the containership seaworthy requirements, a basic model is proposed for the simplified containership stowage problem. And then, it is extended by incorporating more practical considerations, which are progressively embedded in extensive models for different scenarios. These integer linear programming models aim to minimize the number of overstows under the restriction of the mechanical factors, the physical structure, and the stowing rules. The experimental results show that the models have strong scalability for various scenarios.
Highlights
In the past two decades, container transportation has grown rapidly with the development of the global transportation industry
Since containerships are important means of container transportation, their operation efficiency affects the performance of global container transportation
The stowage plan is developed based on the mechanical factors, the physical structure, and the stowing rules. is study selects three indicators from the mechanical factors to measure the seaworthiness under sail, including the metacentric height (GM), trim, and strength
Summary
In the past two decades, container transportation has grown rapidly with the development of the global transportation industry. Before the arrival of a containership at any port of call, the planner should develop an appropriate stowage plan to record the specific location of each container to be loaded into the containership. The stowage plan is developed based on the mechanical factors, the physical structure, and the stowing rules. To improve the containership operational efficiency, a stowage plan is made to minimize unnecessary operations when unloading containers from the containership. As the containership usually informs the port of its arrival time and containership status information only a few hours beforehand, the planners should make a stowage plan according to the corresponding information within only a few hours. It is difficult to make a scheme to minimize the number of overstows under the interaction of the mechanical factors, the physical structure, and the stowing rules.
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