Theoretical and methodological basis for scheduling of ship processing

Abstract

Over the past two decades, research on improving the efficiency of ports and port operators has shown a trend towards creating a so-called «smart port» based on the ideas of the latest scientific directions, such as agile-transformation, scrum- management, digital control and adequate development of the methodological arsenal of intra-port operational management. In this paper, in accordance with the indicated orientation, the main provisions of the ship processing calendar planning are investigated, which still remain extremely poorly studied. This study is aimed at substantiating the relevant for theory and practice options for setting the task of ship processing calendar planning, which is considered separately, and creating adequate economic and mathematical models for it. Typical production situations for practice were analyzed and conditions for the organization of ship handling were determined for them. It was shown that for the study of the outlined task it is advisable to be guided by the inductive method of cognition, that is, to move from its individual statements to the general statement. It is proven that the basic separate formulation of the problem should be determined by the conditions of organizing the loading (unloading) of vessels with a homogeneous cargo at constant values of the parameters (indicators) of this process, which is typical for specialized berths. It has been established that the only correct approach to creating a ship handling schedule is an approach that involves simultaneous modeling of the components of this process, namely cargo handling, loading (unloading) of ship hatches, and the use of transshipment resources. The content of the basic separate and general statements of the task of planning the ship processing process in a calendar form is presented, and economic and mathematical models adequate to both statements of the task are developed, which provide a representation of the ship processing process in dynamics with its «schedule» in time. It is shown that in addition to the above models, it is advisable to further develop a compensation mechanism for eliminating violations of the planned regime of ship handling in accordance with the concept of system optimization of intra-port operational management.