Development of reuse module on stowage planning system using CBR for multiport route

Stowage planning is an activity of containers arrangement on container vessels. A good and fast container setup requires a piece of software that can help planner's performance especially for multiport cases. The Case Based Reasoning method (CBR) can be used to implement software in order to produce a container setup based on pre-existing setups. The Case Based Reasoning method discussed in this paper is focused on the reuse phase by designing the Similarity algorithm, Container Loading List adaptation algorithms as well as the restow evaluation algorithm. The set of algorithms is used to automatically produce a container setup at each port in one voyage and display the number of restow and many containers that experience loading and unloading in one voyage so as to assist the performance of the planner in every port. The results of this study can also be analysed for the workload of planners where the smaller the case base population, manual swaps performed on average more than 70% of the total containers on the ship.