Marine Propulsion Systems move ships through the water, ensures a better safety standard for the marine ecosystem and are cost-efficient. Worldwide goals have been set for emission reductions for the maritime sector.

"The IMO is targeting a reduction in the carbon intensity of international shipping by at least 40% by 2030 compared with 2008 levels, and by 70% by 2050. The IMO took this action to support the United Nations Sustainable Development Goal 13, to take urgent action to combat climate change and its impacts."

The most commonly used type of marine engine is the reciprocating diesel engine that has a higher efficiency compared to other models. These engines can be classified into three types based on their revolutions per minute