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Matheuristics for Slot Planning of Container Vessel Bays

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Stowage planning is an NP-hard combinatorial problem concerned with loading a container vessel in a given port, such that a number of constraints regarding the physical layout of the vessel and its seaworthiness are satisfied, and a number of objectives with regard to the quality of the placement are optimized. State-of-the-art methods decompose the problem into phases, the latter of which, known as slot planning, involves loading the containers into slots of a bay. This article presents an efficient matheuristic for the slot planning problem. Matheuristics are algorithms using mathematical programming techniques within a heuristic framework. The method finds solutions for 96% of 236 instances based on real stowage plans, 90% of them optimally, with an average optimality gap of 4.34% given a limit of one second per instance. This is an improvement over the results provided by previous works.
Original languageEnglish
JournalEuropean Journal of Operational Research
Volume282
Issue number3
Pages (from-to)873-885
Number of pages13
ISSN0377-2217
DOIs
Publication statusPublished - 1 May 2020

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