The presentation will explore the potential of DC distribution systems in revolutionizing maritime energy and take a comprehensive overview of DC systems applicable to various vessel types: small boats to large yachts, ferries and cruise liners. It will explore the advantages, high efficiency, fuel savings achieved through variable speed diesel generators, reduced emissions and lower maintenance needs, and delve into the operational flexibility, emphasizing the seamless integration of multiple energy sources – generators, batteries and fuel cells. The presentation will discuss the advanced protection mechanisms in DC topologies and the capability for shore-based DC charging, showcasing the future of sustainable maritime energy solutions.