The MARPOL Annex VI mandate, it’s clear that state regulators and the insurance industry are committed to enforcing strict compliance of the new Sulphur limitations from 1 January 2020.

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Recent public statements from international regulators, industry and the media would indicate there are growing concerns on many levels with regards to the ability of the industry to manage the technical and commercial challenges associated with the introduction of the new sulphur limits.


For the refiners, oil previously sold as fuel to the marine industry above the 0.5% Sulphur cap will need further blending or treatment to meet the new specifications. Residuum Oil remaining above the Sulphur cap will have low value and possibly become an expensive storage/waste management issue.


Curve Marine through new environmentally friendly chemistries and innovative engineering has developed an advanced desulphurization system. The ability to remove Sulphur via a commercially sustainable pre-treatment process and other contaminants from HSFO prevents what could otherwise become an expensive unstable blending option or a waste management problem. Curves Marines proven pre-treatment solution can reduce a 3.4% Sulphur HFO to below 0.5% Sulphur. Curve Marine's Desulphurization process enables a new STABLE Benchmark for VLSFO, reducing Black Carbon Emissions & Compatability issues associated with Hybrid Blending. Below is a collection of links to recent media comments which expand upon the above.

Documents show Hybrid VLSFO possibly responsible for Mauritius Oil Spill

Why Hybrid VLSFO is so dangerous to the environment

An Industry Under Pressure

Stability & Compatibility Issues

Black Carbon Emissions

Operational Feedback

Recent VLSFO Issues Falling Into 4 Categories

Compliant Fuel Problems

Marine fuel handling in connection to stability and compatibility

Refinery Reliability


Maritime Executive


Wallenius Wilhelmsen Solutions