Fuel Grade Directory

Marine Fuel Grades

Every commercial marine fuel grade we procure, with ISO 8217 specifications, regulatory context, and guidance on where each is available. From legacy HSFO to emerging green methanol.

The IMO 2020 sulphur cap transformed the marine fuel market. VLSFO now dominates open-sea operation; LSMGO covers Emission Control Areas; alternative fuels — biofuel blends, LNG, methanol — are growing shares for vessels meeting voluntary or regulatory decarbonisation targets.

≤ 0.50% m/m (outside ECAs)

VLSFO

VLSFO is the dominant marine fuel grade globally since the IMO 2020 sulphur cap took effect on 1 January 2020. It refers to any residual marine fuel with sulphur content at or belo…

ISO 8217:2017 / 2024 — RMG and…
Up to 3.50% m/m (requires scrubber for compliance outside ECAs)

HSFO

HSFO remains a commercial marine fuel for vessels equipped with exhaust gas cleaning systems (scrubbers) that remove sulphur from combustion exhaust. Before IMO 2020, HSFO was the …

ISO 8217:2017 / 2024 — RMG and…
≤ 0.10% m/m

LSMGO

LSMGO is a distillate marine fuel with sulphur content at or below 0.10%. It is the standard compliance fuel for Emission Control Areas (ECAs) worldwide — the North American ECA, N…

ISO 8217 — DMA grade (LS varia…
Varies by market and specification; LSMGO variant at 0.10%

MGO

MGO is the general category of distillate marine fuel, covering a range of sulphur contents. Standard MGO can be supplied at 1.0% or higher sulphur in some markets; for ECA complia…

ISO 8217 — DMA grade…
≤ 0.10% m/m

ULSFO

ULSFO is a residual marine fuel reformulated to 0.10% sulphur — essentially compliant with ECA requirements as a residual rather than distillate. It occupies a small but specialise…

ISO 8217 — RMG-type, low-sulph…
Matches host fuel specification (typically ≤0.50% for B24/B30 with VLSFO base)

Biofuel

Biofuel blends combine conventional marine fuel (typically VLSFO) with biocomponent (generally FAME or UCOME). The numeric label indicates biocomponent percentage: B24 is 24% biofu…

ISO 8217:2024 includes provisi…
Effectively zero (no sulphur in natural gas)

LNG

LNG is the most mature alternative marine fuel after biofuel blends. It is natural gas cooled to -162°C, occupying about 1/600th of its gaseous volume, enabling efficient storage. …

ISO specifications under devel…
Zero

Methanol

Methanol is an emerging marine fuel gaining attention as a pathway to deeper decarbonisation than LNG can offer. Liquid at ambient conditions (unlike LNG), it uses simpler onboard …

Specifications under developme…

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