The shipping industry is currently undergoing a green revolution. The focus is on two key measures of the International Maritime Organisation (IMO): EEXI and CII (also known as UEFI). This article provides an easy-to-understand eexi uefi explanation, explains the background, implementation and gives practical tips for ship owners, shipping companies and logistics service providers.
With the aim of reducing the CO₂ fleet intensity by 40 % below the 2008 level by 2030, the IMO introduced two environmental regulations: the Energy Efficiency Existing Ship Index (EEXI) and the Carbon Intensity Indicator (CII) from 1 January 2023. IMO EEXI & CII FAQ.
EEXI is a technical index for evaluating existing ships ≥ 400 GT, which calculates the so-called attained EEXI based on engine power, consumption and size. This must be below a "required EEXI" threshold. Further details are provided by DNV .
The Carbon Intensity Indicator (CII) was introduced in 2023, measures the operational CO₂ efficiency in g CO₂/tonne-mile and leads to an annual classification from A to E. Information on logic, operational data and reporting obligations can be found in the IMO FAQ .
| Measure | Focus | Mandatory period | Main requirement |
|---|---|---|---|
| EEXI | Technical efficiency | once, for changes | attainment ≤ required |
| CII | Operational business | annually from 2023 | Rating A-E, plan for D/E |
Together they form the eexi uefi declaration for CO₂ reduction.
DNV and Remoment studies show that such measures effectively support EEXI and CII targets.
The SEEMP (Ship Energy Efficiency Management Plan) was updated in 2023 to cover both EEXI and CII - including Corrective Action Plans in the event of a poor rating.
What does UEFI mean?
UEFI = EEXI + CII, the comprehensive environmental regulation of the IMO.
Does every ship have to update the SEEMP?
Yes, the SEEMP has included EEXI and CII-relevant measures since 2023.
What sanctions apply in the event of non-compliance?
Fines, driving bans or flag state measures.
How do I improve my CII rating?
Through slow steaming, better route planning and technological retrofits.
EEXI = one-off, technical measure.
CII = annual operational assessment.
Early action avoids sanctions, increases competitive advantages and prepares for future regulations.
ODS Orient supports you in analysing, planning and implementing customised solutions - whether RoRo, containers or special projects. Find out more about our expertise on the ODS Orient Homepage and in our Blog facebook.com+1facebook.com+1en.linkedin.com+7odsorient.com+7odsorient.com+7. If you have any questions or project enquiries, please contact us via our Contact page.
The information provided in this article is for general information purposes only. Despite careful research, ODS Orient assumes no liability for the topicality, correctness, completeness or binding nature of the content. Liability for damages arising directly or indirectly from the use of this content is excluded.
Why 2026 will be a turning point From 1 January 2026, the International Maritime Organisation (IMO) will tighten its climate targets. The focus is on more binding efficiency paths for ships, stricter inspection obligations for shipping companies and concrete preparatory steps for global CO₂ pricing. For exporters, this means more transparency, more documentation - and potentially higher CO₂ cost components. Immediately helpful: Roadmaps → https://odsorient.com/fahrplaene What do I [...]
Why tracking with RoRo is more than just „ship on map“ RoRo (roll-on/roll-off) is a fast and robust shipping method for roadworthy vehicles. Nevertheless, many customers find the transport process opaque – especially when status information is scattered across emails, portals and PDF notifications. A structured RoRo tracking system brings order to this diversity of data and enables clear […]
