Abstract
Increasing the efficiency of loading container ships, especially in wartime, is one of the most important problems. The paper examines elimination of safety issues in marine transportation of containerized goods at the stowage planning stage. The article examines well-known stowage planning software that was developed in order to help with the stowage planning process. This paper presents a Boolean mathematical model of integer linear programming, which considers structural and operational constraints of a vessel and containers likewise, including hazardous cargoes compatibility constraints (according to the International Maritime Dangerous Cargoes Code) and container loading sequences (that depends on discharging port order). The proposed approach for solving the task mentioned above consists of dividing it into two stages. At the first stage, a preliminary stowage arrangement is calculated using a simple heuristic, which takes into account structural and operational limitations, container loading sequence and compatibility of dangerous cargoes as well as certain safety parameters (stability, durability, etc.). At the second stage, the arrangement is optimized using the safety parameters using a steady-state genetic algorithm. Developments on the subject include - data structures for application in container vessel stowage planning software; - interface that allows a user to graphically display a stowage plan of a container ship; - interface that allows a user to display safety parameters of a container ship (stability, durability, etc.); - interface that allows to input and edit containers and vessel data, as well as dangerous goods segregation provisions according to the International Maritime Dangerous Cargoes Code, and displays a notification if those are not satisfied.
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