The article studies the ways to achieve complete decarbonization of the SSS fleet in accordance with the IMO Strategy and the Green Plan for Europe 2050. Therefore, experts from the fields of shipping, shipbuilding, mechanical engineering, energy, technology, human resources management, logistics, maritime law, occupational safety and ecology assessed the selected elements of the quality of propulsion systems on ships. During the study, the sizes of these elements for the target year 2050 were numerically estimated. As a result, a matrix of development was created in relation to the current situation by which it is possible to determine their synergistic effect and the individual impact on other elements. The results of the research have shown that there is a real possibility of achieving the set goals if the values of individual quality elements of propulsion systems are improved.