SEEMP Part III (image)

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SEEMP Part III in a nutshell

The SEEMP Part III is intended to help companies achieve the required CII (Carbon Intensity Indicator). Related to this annual rating, the SEEMP Part III is a mandatory, ship-specific document that lays out the plan to improve the CII, and therefore the vessel’s operational energy efficiency, for the next three years. 

The SEEMP Part III is a dynamic document subject to regular updates and revisions, reflecting changing performance and required measures. It must be verified and kept on board the respective vessel from 1 January 2023 together with the Confirmation of Compliance (CoC).  

Connection between the SEEMP Part III, DCS and CII


Starting in 2024, the CII must be calculated and reported to the Data Collection System (DCS) verifier together with the aggregated DCS data for the previous year, including any correction factors and voyage adjustments. The attained CII and the environmental rating (A to E) will be noted on the DCS Statement of Compliance (SoC), which will be required to be kept on board for five years. 

In case of a D rating for three consecutive years or one E rating, the SEEMP Part III must be updated with a corrective action plan and verified before the SoC can be issued. The corrective action plan should consist of an analysis of why the required CII was not achieved and include a revised implementation plan.

Verification of SEEMP Part III

As a Recognized Organization to the IMO, DNV is able to verify your SEEMP Part III. 

  • The following must be included in the SEEMP Part III: 
  • The required CII for the next three years, calculated based on the individual vessel’s particulars 
  • The target CII for the next three years, calculated based on the vessel’s operational data 
  • An implementation plan documenting how the required CII will be achieved during the next three years, with yearly targets 
  • Procedures for self-evaluation and improvement 
  • Possibly corrective action plan (in case of inferior rating)

How DNV can help you with the SEEMP Part III

SEEMP Part III Generator

To ensure that our customers comply with the regulatory requirements and can easily plan further steps of their decarbonization journey, DNV is launching SEEMP Part III Generator.

SEEMP Part III – advisory support

For the more challenging vessels or trades, Maritime Advisory by DNV can provide the SEEMP Part III with the most up-to-date accuracy of the level of effectiveness of abatement measures suitable for the individual vessel, taking into account already exploited operational optimizations and investments.

Contact us:

Contact our SEEMP III experts

DNV's full DCS solution

Discover more CII / Emissions Insights

Related links

On-demand webinar: MEPC 79 in focus – revising future GHG ambitions (Dec 2022)

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EEXI and CII requirements taking effect from 1 January 2023

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CII – Carbon Intensity Indicator

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Learn more on our theme page

Decarbonize shipping

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