The task of the final work was to model the power system of the ship, which includes the electric propulsion system, in the Simulink environment of the MATLAB software package. The created simulation model of the ship’s power system should, in addition to the electric propulsion system, contain elements that model the production, transmission and consumption of electricity on the ship. Finally, on the basis of the selected literature, the main and auxiliary parts of the created simulation model of the ship’s power system had to be described. In the second chapter of the final thesis, the production of electricity on the ship is described. The basic and auxiliary sources of electricity and the basic principles of the ship’s power plant are mentioned. Basic sources of electrical energy on board are covered in detail. Auxiliary sources of electricity did not need to be processed in detail, because they are not in the simulation model. In the third chapter of the final thesis, the most significant differences between the marine and land power systems are given, and the main and other elements of the ship’s electrical network are listed. Direct current and alternating current distribution systems are also mentioned. The alternating current distribution system was treated in more detail than the direct current distribution system, because it was used in the modeled simulation. In the fourth chapter of the final paper, four basic groups of electrical energy consumers on the ship are listed. Of the four mentioned groups of consumables, electric motor drives and electric propulsion are covered in more detail. In the case of electric propulsion, the description of propulsion with electric transmission was detailed, because it is used in the simulation. The fifth chapter of the final paper describes the main and auxiliary elements of the simulation. Then a description of the simulation as a whole is given, as well as the order of events during the simulation. At the end, the results of the simulation during operation are presented with appropriate comments on the obtained values.