The maritime industry's growing need for energy efficiency and reduced environmental impact has driven the exploration of alternative power distribution methods, such as Direct Current (DC) grid systems. This study examines the potential benefits of integrating a DC grid system into marine vessels, using MV Victoria as a case study. Compared to traditional diesel propulsion systems, DC grids offer advantages like enhanced energy efficiency, better integration of renewable energy sources, and minimized energy losses. Through simulations of power flow, voltage stability, and system reliability, the research identifies significant improvements in fuel efficiency and greenhouse gas emission reduction, along with challenges like initial investment costs and safety concerns. The findings suggest that adopting a DC grid system could significantly modernize marine vessels by improving energy efficiency and meeting stringent environmental standards. Further research is recommended to address technical and economic challenges to encourage broader adoption of DC grids in the maritime sector.