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Understanding Carbon Intensity Indicator (CII)

The Carbon Intensity Indicator (CII) is an operational measure adopted by the IMO to be implemented in 2023, describing the CO2 emission intensity of a vessel. CII will determine the maximum steaming speed for large parts of the global fleet. From 2023 and onwards, the maximum sailing speed of a ship will likely need to reduce each year in order to comply with regulation. By mapping CII exposure, we can help shipowners and charterers better understand if speed reduction is a viable option for compliance, or if alternative measures are needed.

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of the fleet will be ‘unfit’ by 2023


IMO’s emissions reduction target between 2008 and 2030

5,000 GT

Regulation applies to ships above 5000 GT and will need an approved enhanced Ship Energy Efficiency Management Plan (SEEMP)

CII will have a direct impact on chartering, S&P and Newbuilds.

Don’t get left behind

Regulators and other stakeholders in the maritime industry are intensifying their efforts to cut greenhouse gas (GHG) emissions from shipping, shipowners and charterers should understand their CII exposure as soon as possible to be compliant as regulation comes into force 1 Jan 2023.

Understand your exposure

Clarksons can prepare bespoke CII-Speed Impact Analysis to help you understand:





“We expect CII to be a key KPI going forward and for it to have a direct impact on values, financing, class approval, insurance and access to markets. Our expert team offer bespoke analysis to determine vessels’ maximum sailing speed under CII limits towards 2030.”

Kenneth Tveter, Head of Green Transition Group


How we're helping clients to navigate the impact of CII

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For charterers and vessel owners, it’s becoming increasingly important to not only map and understand CII exposure but to then evaluate the various improvement options. Clarksons’ helps with exactly that, providing bespoke insight to inform better business decisions.

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