Stability criteria as constraints in a fleet of ships optimisation problem

Abstract

The paper has been written within the European EUREKA Project E/2772, initiated and completed at the Faculty of Ocean Engineering & Ship Technology, Gdańsk University of Technology in the years 2001-2003. A problem has been solved concerning mathematical optimisation of a fleet of multipurpose sea-river vessels for European short-shipping regular lines, in the area of The North and Baltic Seas, on the level of marine transportation task, by the non-linear programming methods with constraints. A method is proposed which enables existing criteria of stability to be included as constraints in the optimisation model of a fleet. In the numerical examples, three typical criteria of intact stability: by IMO, PRS, and HSMB have been selected to demonstrate a post-optimisation feasibility analysis of principal parameters of ships.