Design and application of reuse stage algorithm of case-based reasoning method on container stowage planning

Abstract

Stowage planning is a container arrangement planning activity on container ships. The Case-Based Reasoning method can solve the newest stowage plan cases by taking a stowage plan case that has the highest similarity and has been resolved in the past as a reference for arranging. The Case-Based Reasoning method has four-stage, there are Retrieve, Reuse, Revise, Retain. The Reuse stage is to adapt the Container Loading List so that it is arranged to resemble the case that was taken at the Retrieve stage. Algorithms for the Reuse stage of the Case-Based Reasoning Method has been designed and obtained the Container Loading List Adaptation, Fill-Blank, Adding the Remaining Container, Trim Optimization, and GM Optimization Functions. The functions can be implemented in software design and automatically or manually arranged the containers based on Casebase. Hence, users make the new stowage plans easier and faster. Based on the results of software testing, the difference between LCB and LCG is less than 1% LBP so that the Trim was fulfilled, and GM obtained a positive value so that the ship was in a stable condition.