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MGO (Marine Gas Oil)

D6. Decarbonization, emissions and alternative fuels

Definition

Distillate marine fuel meeting ISO 8217 grades DMA/DMZ.

Marine gas oil (MGO) is a distillate marine fuel with no residual component, meeting ISO 8217 distillate grades DMA and DMZ. With low viscosity, no need for heating, and clean combustion, it serves auxiliary engines, boilers, and as the compliance fuel inside emission control areas, where the 0.10 percent m/m sulfur limit of MARPOL Annex VI Regulation 14 applies. ISO 8217:2024 cut the DMA and DMZ sulfur ceiling to 1.00 mass percent and added cloud-point and cold-filter-plugging-point limits to winter grades. MGO is a drop-in distillate for ignition pilot duty in dual-fuel engines burning methanol, ammonia, or LNG, and it serves as the bunker benchmark against alternatives.

Source: ISO 8217:2024; MARPOL Annex VI Reg.14