In order to avoid significant differences between the national regulations of individual states, international conventions were made by the International Maritime Organization, which have to be applied on ships of all countries involved in maritime transport. In order to ensure ship safety and the ability to function, the technical requirements of the statutory certification of sea-going vessels, which are prescribed and made by the Classification societies in accordance with the convention and national regulations. The requirements of International maritime conventions as well as national regulations require that ships have to be designed, constructed and maintained in accordance with the appropriate technical regulations for hull, hull equipment, machine equipment, electrical equipment and control devices issued by a technical service-classification society. To this end, a system of Rules for the classification of ships has been established according to which the ships have to be inspected during construction. Construction supervision over statutory items includes verification during design and construction of the ship, and installation of machinery, devices and equipment in the ships to ensure that it is constructed in accordance with the requirements of the following regulations (including any amendments). This graduated thesis outlines the importance of performing the prescribed technical controls in order to inspect the ship and its equipment and inspecting equipment within the prescribed timeframe for the purpose of distinguishing or certifying the statutory regulations to confirm that the ship is capable of sailing and performing its function. The thesis provides an example of the actions that have to be taken during inspection of the hull and in accordance with the requirements of the rules for the technical supervision of ships.