From the beginning of the development of maritime and shipping industry, the item of maintenance is of key importance for the success of business, navigation and longevity of ships. In the modern world, a significant number of ship maintenance strategies have been developed with the basic goal of increasing the safety of navigation, operations and crew, ensuring efficiency and reducing the potential negative impact of navigation on the environment. International, regional and national legal regulations certainly stipulate the obligation to maintain ships and their systems and support safe navigation with various acts and give approvals for the same. Planning the implementation of various forms of maintenance is the main task of shipowners and ship operators, who have the greatest interest in ships and systems that are in good condition. Strategies for maintaining ship systems include their corrective and preventive maintenance, the use of terotechnology, TPM and RCM forms of maintenance, and self-maintenance systems that are becoming more and more popular with newly built ships. Regardless of the maintenance method, it is a necessary and mandatory procedure, the careful planning and implementation of which can result in significant changes in business, primarily in terms of costs.