In a growing and competitive maritime world, it is necessary to improve the operational quality of port terminals in order to satisfy customers. This observation was made at the container terminal in Abidjan. In this paper, the goal is to minimize the overall duration of the transfer operations of the containers on railcars to neighboring countries. Considering the resources of the container terminal in Abidjan, we propose a non-linear programming model of the problem, we solved it using the AMPL language (Mathematical Programming Language) and we have used the KNITRO 10:2 solver for the solution.