Skip to main content



Thursday, October 21, 2021 

As ship operators hasten to comply with the IMOs upcoming Energy Efficiency Existing Ship Index (EEXI) framework, Yara Marine Technologies has launched FuelOpt - an automated propulsion optimisation technology - as a viable solution that can safely limit shaft power output.

Green technology company Yara is offering the FuelOpt system as an option to enable Shaft Power Limitation (ShaPoLi) in accordance with the upcoming EEXI framework. A preliminary assessment has been carried out by DNV.

Per Bjärkby, CTO Yara Marine Technologies, said: “Our understanding of the IMO’s EEXI guidelines shows that our FuelOpt technology is already meeting ShaPoLi requirements. We are proactively engaged in the approval process together with DNV in order to obtain class approval as soon as possible.”

The EEXI regulation will come into force on 1 January 2023. It is aimed at any existing vessels which have so far escaped the impact of EEDI requirements. Suggested measures for EEXI include engine power limitation (EPL), ShaPoLi, propulsion optimisation, and energy-saving devices. Among these, derating the engine power output via EPL or ShaPoLi is likely to be a primary measure implemented for the reduction of greenhouse gas (GHG) emissions.

“Our FuelOpt system has had the proven functionality to limit shaft power since 2013 and provides a log of the propulsion data. It can help ship operators to comply with upcoming EEXI regulations while also enhancing vessel operational efficiency,” said Mikael Laurin, MD Vessel Optimisation, Yara Marine Technologies.

FuelOpt also offers the additional benefit of not impeding regular operations. “FuelOpt doesn’t require an on board pre-visit and the installation can be completed at a port call,” Laurin added. The system enables ship operators to set an upper limit to shaft power output without any modification to the existing machinery, aligning daily operations with what is stipulated in the EEXI requirements.

The use of ShaPoLi can be overridden in an emergency, enabling the crew access to the engine’s full power. As a result, it maximises cost and time savings while streamlining efficiency and maintaining safety standards. Moreover, FuelOpt avoids a significant hurdle to implementation by offering the simpler alternative of ShaPoLi.

FuelOpt logs all necessary engine parameters and stores these in the performance management and reporting software Fleet Analytics. This software enables reports of when, where, and why excessive power may have been used during a certain event, as mandated by the EEXI framework.

According to Yara, the approaching regulatory deadline may result in the vast majority of the maritime sector finding it a difficult task to achieve EEXI compliance. Currently, DNV estimates that approximately 80% of the global trading fleet will need to undertake technical upgrades to meet the minimum energy efficiency standards set in EEXI. With certain sectors suffering financial setbacks during the pandemic, complex and cost-intensive solutions are unlikely to be favoured within the industry for the time being. Yara considers it imperative that any solutions for EEXI account not only for global fleet numbers that would require upgrades within this limited time frame, but also the likelihood that ship operators will be able to allocate time and financial resources for complex refittings. With these factors taken into account, and with the understanding that FuelOpt is capable of being installed on any vessel type and suitable for any fuel type, Yara Marine believes it to be a reliable solution to address EEXI needs across the industry as a whole.

Reader Comments (0)

There are currently no comments on this article. Why not be the first and leave your thoughts below.

Leave Your Comment

Please keep your comment on topic, any inappropriate comments may be removed.

Return to index