Biofuels, especially those derived from waste and advanced feedstocks, significantly reduce greenhouse gas emissions, making them virtually free of sulfur oxides. Their production from organic materials, such as waste oils, contributes to reducing waste and efficient resource utilization. With lower carbon intensity compared to conventional fossil fuels, biofuels release fewer carbon emissions per unit of energy, contributing to a cleaner and greener maritime industry. Furthermore, biofuels are compatible with existing ship engines and infrastructure, facilitating a smooth transition to more sustainable fuel options without costly modifications, and they have a positive impact on air quality by emitting fewer pollutants that affect human health.