ABS

With new regulations aimed at reducing air pollutants and greenhouse gases (GHGs), there is increased interest in alternative fuels. Zero and low carbon fuels such as hydrogen and ammonia, and biofuels with negligible sulphurs can lower particulate matter (PM), gaseous and carbon emissions. MARPOL Annex VI has dealt with the use of biofuels by fuel oil quality regulations under Regulation 18.3.2, while the ISO standard 8217 “Petroleum products – Fuels (class F) – Specifications of marine fuels” was modified in 2017 to widen tolerance for use of biofuels in existing and new fuel oil grades.

https://ww2.eagle.org/en/rules-and-resources/regulatory-news/regulatory-news/MARPOLAnnexVI-biofuels.html