Solutions for low sulphur operations


It is likely that the fuel supply system for your ship’s main and auxiliary engines has originally been designed to run on fuels with different properties to the ones that are compliant with the IMO 2020 or sulphur emission control area (SECA) regulations. These limit the sulphur content of fuel to 0.50% globally and to 0.10% in SECAs.

Controlling fuel viscosity and temperature at engine inlets is crucial. Therefore introducing any new fuel may require an evaluation of the fuel supply system and potential modifications to maintain reliability and peak performance. These avoid system instabilities, leaks, clogging, thermal stresses and excessive wear.

Whatever option you choose to be compliant, you can rely on Auramarine's expertise to ensure the safest and most efficient solution available.

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An operator's choice of fuel depends on trade routes as well as on the frequency and combinations of port calls within and outside sulphur emission control areas (SECAs).

Typical choices are:

  • HFO and MDO or
  • HFO and MGO or
  • all three fuels

Read more about HFO+MDO/MGO

Related products:


Cooling units

Chilling units

Fine filter

AEP emergency pump


Heavy fuel oil (HFO): available either with a high sulphur content (e.g. RMA-RMK), in which case a scrubber is needed, or with a 0.50% (low) sulphur content (also called global fuel), or a 0.10% (ultra low) sulphur emission control area (SECA) compliant content. In both latter cases a scrubber is not needed. HFO needs to be heated to reach the correct viscosity. When using HFO, a fine filter is recommended to prevent potential damage from impurities, such as cat fines.

Marine diesel oil (MDO): based on today’s availability, MDO (DFB/DMB) is suitable for use by vessels operating in non-SECA areas due to its 0.5% sulphur content. To reach the correct viscosity, it needs to be cooled using a cooler.

Marine gas oil (MGO): required for operation in SECA areas and in certain ports. Sulphur content 0.1% (DMA, DMZ). To reach the correct viscosity, a cooler or possibly a chiller is needed. A compatibility check of the feeder and booster pumps is required before switching to MGO to ensure that any viscosity-related issues, and subsequently the risk of capacity and lubrication problems, are avoided.

Let's talk!

Every ship is different from a technical, trading and operational perspective. However, for all retrofits some elements remain essential, namely cost-efficiency and short lead times from design to delivery.

Auramarine is at your service to help you navigate the complexities of class compliance, and find the safest and most cost-efficient retrofit solution for your fuel supply system. We also keep the future in mind, ensuring your system is as flexible as it can be to accommodate change. Contact us to find the best solution to meet your ship’s needs.

Tel.: +358 20 486 5030


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