Operational Performance

RightShip recognises that understanding vessel operational performance is necessary to drive industry emissions down and meet emissions reduction targets.  

Charterers can use RightShip’s Carbon Accounting tool to understand vessel operational performance through analysis of Energy Efficiency Operational Index (EEOI) scores.  


What is an EEOI? 

The EEOI is a voluntary tool used for measuring operational energy efficiency and as such it is not regulated. It is an operational index developed by the IMO, and we use it in our Carbon Accounting tool to provide insight into emissions intensity.  

The EEOI differs from the EEDI in that the EEOI looks at actual fuel use over the course of a voyage, whereas the EEDI is based on vessel design and theoretical emissions. In this way, in the calculation of EEDI, the ship’s summer deadweight is considered, whereas the EEOI uses fuel burn to determine CO2 emitted relative to actual cargo carried during that voyage, for example if a vessel is 50 per cent full this will be used in EEOI equation. 


How it works  

We can provide analysis of vessels in relation to peer vessels, and against industry standards including the IMO’s GHG emissions reduction target. This way top performers can be highlighted at the vessel and supplier level.  

In order to access these insights, Carbon Accounting customers must work with their vessel suppliers to obtain voyage fuel use data.  

RightShip’s Carbon Accounting methodology (aligning to the European standard) has vessel specific insights that highlight expected performance, which can be used to check the data for quality (which can be one of the bigger issues with fuel use information).  

While you don’t need to have fuel use data to access Carbon Accounting, providing this information where possible leads to more accurate and robust results. 


EEOI example calculations 


When operational performance is considered in the broader Carbon Accounting context, you can use the comprehensive insights provided to understand your present position and set reduction targets, enhance supply chain efficiency, and maintain a competitive advantage in an industry that is increasingly rewarding sustainable operations.