“…Biofuels are poised to replace fossil-based marine fuels due to their nearly comparable energy density, reduced GHG emissions, and adaptability to current marine engines and infrastructure . In addition to these advantages, biofuels are inherently low in sulfur, making them prime candidates for compliance with IMO sulfur-related regulations. − Through a snowball effect, an increase in demand for biofuels in the marine sector is expected to strengthen support for the domestic bioeconomy and, thus, the sustainability of this emerging pathway . In the near future, biodiesel, bio-LNG, and straight vegetable oil (SVO) will be renewable alternatives to fossil fuels, , while biomethanol, Fischer–Tropsch (FT) biodiesel, and pyrolysis bio-oil will have potential to replace LNG, HFO, and distillate fuels in the longer term. , First-generation biofuels, such as SVO and biodiesel, have been shown to be effective in ships, while pyrolysis oil and Fischer–Tropsch (FT) biodiesel, which are second biofuels, have similar combustion quality in marine engines .…”