Modern technology, regulations and efforts are aimed at the sustainable development of the entire human society. At the same time, the efforts of almost every field are focused on finding alternative and innovative solutions for energy production that do not include fossil fuels, which are believed to be the main source of human air, water and environmental pollution. One of the most common solutions is the use of hydrogen as a propellant, primarily in the maritime sector, which is characterized by significant advantages in use compared to fossil fuels. Primarily, research and development, creation of policy and regulations in this case are oriented towards achieving a zero - emission rate as well as reducing the carbon footprint, and one of the ways is the application of engines with fuel cells and the use of hydrogen in internal combustion engines in combination with very small quantities of diesel fuel. Certainly, in the future, it is expected to carry out more research, application possibilities and technological solutions that are connected with the use of hydrogen as a propellant fuel, and in this way, the realization of a contribution that manifests itself in a cleaner and more efficient future.