November 1, 2022 | Circular No. 11466

Dear Member,

You may have seen in trade media that international rules on short-term carbon reduction measures (under MARPOL Annex VI) come into force today, November 1, 2022. However, because of the way the IMO implementation process works, the requirements do not come into effect until January 1, 2023.

This means that the requirements for EEXI (related to ship design) and CII (related to ship operation) will come into effect January 1, 2023 as planned, the first annual reporting will be completed in 2023, and initial ratings given to vessels in 2024.

In the meantime, the next meeting of the IMO Marine Environment Protection Committee (MEPC), which is responsible for these measures, will be held December 12-16, 2022. Decarbonizing international shipping will be a central issue: Candidate mid-term measures, including economic measures such as carbon pricing, are being brought forward. In parallel ongoing work, a revised IMO Strategy on Reduction of GHG Emissions from Ships is anticipated to be adopted by mid-2023. This strategy will set out longer-term goals, including ambition levels for 2050.

For more detailed information about the short-term carbon reduction measures coming into place on January 1, 2023, please see this news piece from IMO: Rules on ship carbon intensity and rating system enter into force (


Miako Ushio
Manager, Environmental and Regulatory Affairs