Classification society DNV on Saturday (2 May) released a statutory news on the highlights of IMO’s MEPC 84 including extensive discussions on the Net-Zero Framework, and agreement to further consider adjustments to ensure consensus as well as adopted amendments to MARPOL Annex VI, designating the North-East Atlantic as an Emission Control Area (ECA) for SOx, PM and NOx.
The following are excerpts of the article:
The 84th session of the IMO’s Marine Environment Protection Committee (MEPC 84) held extensive discussions on the Net-Zero Framework (NZF). This was the first opportunity to do so following the adjournment of the extraordinary session in October 2025. Although there were divergent positions on key elements such as establishing a fund, MEPC 84 agreed to continue discussions on a revised framework to ensure consensus. MEPC 84 also progressed on key technical guidelines supporting the NZF. As part of the review of the Ballast Water Management (BWM) framework, amendments to the BWM Convention were approved, strengthening survey and other mandatory requirements.
Adoption of amendments to mandatory instruments
MEPC 84 adopted amendments to MARPOL Annex VI designating the North-East Atlantic as an Emission Control Area (ECA) for SOx, PM and NOx. This ECA covers the Exclusive Economic Zones (EEZs) and territorial seas of Greenland, Iceland, the Faroe Islands, Ireland, the UK, France, Spain and Portugal. The amendments also include clarification of DCS data reporting and data accessibility, and the use of multiple engine operational profiles for a marine diesel engine. The amendments will enter into force on 1 September 2027, with the 0.10% sulphur limit taking effect 12 months later. The requirement for NOx Tier III engine certification will apply to ships contracted on or after 1 January 2027, or in the absence of a building contract, constructed (keel-laid) on or after 1 July 2027, or delivered on or after 1 January 2031.
Energy efficiency
Review of the Ship Energy Efficiency Management Plan (SEEMP) and the Carbon Intensity Indicator (CII) MEPC 84 commenced the second phase of the review of the SEEMP and CII frameworks, to be completed in 2028. There was broad support to work towards a strengthened SEEMP framework to ensure continuous improvement of ships’ carbon intensity. The proposed elements include internal reviews, implementation logs and strengthened audit requirements, and will be further discussed and finalized at MEPC 86 in October 2027.
MEPC 84 could not agree on whether to replace the current CII metric for cruise passenger ships measuring emissions per gross ton-mile with a revised metric measuring emissions per hour. The matter will be further discussed at a later session.
EEDI/EEXI
MEPC 84 adopted amendments to the EEDI calculation and survey/certification guidelines to clarify the definition of the primary fuel for dual‑fuel engines operating on two liquid fuels, in particular methanol and ethanol. The amendments further specify that the determination of engine power and specific fuel consumption is to be based on the maximum continuous rating (MCR) as certified under the NOx Technical Code 2008.
Reduction of GHG emissions
Net-Zero Framework (NZF)
The GHG discussions at MEPC 84 primarily focused on the further development of the NZF in light of the adjournment of MEPC ES.2 in October 2025. Discussions were limited to a very extensive exchange of views, where previously known positions were largely reiterated. No decisions on NZF design features were expected or forthcoming at the meeting. MEPC 84 agreed on two additional intersessional meetings to continue negotiations, although no timeline was set for when a revised framework might be approved or adopted. MEPC 84 also finalized Terms of Reference for the 5th IMO GHG study, which is expected to commence later in 2026 and be completed in 2028.
Guidelines supporting the NZF
MEPC 84 and the preceding meeting of the Intersessional Working Group on Reduction of GHG Emissions from Ships (ISWG-GHG 21) continued the development of guidelines supporting the implementation of the NZF. MEPC 84 agreed using the following draft guidelines and documents as the basis for further work:
- GFI calculation guidelines
- Amendments to the 2022 Guidelines for Administration
- Verification of Ship Fuel Oil Consumption Data and Operational Carbon Intensity
- Guidance on how to monitor, report and verify the energy derived from wind propulsion systems
- Guidelines on requirements and procedures for recognition of Sustainable Fuel Certification Schemes (SFCS) and reporting certification activities (SFCS guidelines)
- Modules for possible inclusion in guidelines related to zero and near-zero GHG fuels, technologies and/or energy sources (ZNZs)
ISWG-GHG 21 also discussed governing provisions and possible disbursement of revenue of the proposed IMO Net-Zero Fund, as well as the development, management and operation of the IMO GFI Registry.
Note: The full statutory news can be found here.
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Published: 5 May, 2026