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SAFETY4SEA

MARPOL Annex VI amendments enter into force

by The Editorial Team
November 1, 2022
in Emissions
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Iimage hereabove is being used for illustration purposes only Credits: Shutterstock

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Amendments to the International Convention for the Prevention of Pollution from Ships (MARPOL) Annex VI enter into force on 1 November 2022.

More specifically, from 1 January 2023 it will be mandatory for all ships to calculate their attained Energy Efficiency Existing Ship Index (EEXI) to measure their energy efficiency and to initiate the collection of data for the reporting of their annual operational carbon intensity indicator (CII) and CII rating.

As the requirements for EEXI and CII certification come into effect on 1 January 2023, the first annual reporting will be completed in 2023, with initial CII ratings given in 2024.

These latest amendments build on IMO energy-efficiency measures which were first adopted in 2011 and strengthened since – the CII and EEXI measures represent the next stage in our work to meet the targets set in the Initial IMO GHG Strategy

IMO Secretary-General, Kitack Lim, said.

What are the new mandatory measures?

As a stimulus to reduce carbon intensity of all ships by 40% by 2030 compared to 2008 baseline, ships will be required to calculate two ratings: their attained Energy Efficiency Existing Ship Index (EEXI) to determine their energy efficiency, and their annual operational Carbon Intensity Indicator (CII) and associated CII rating. Carbon intensity links the GHG emissions to the amount of cargo carried over distance travelled.

What is an Energy Efficiency Existing Ship Index (EEXI)?

A ship’s attained EEXI indicates its energy efficiency compared to a baseline. Ships attained EEXI will then be compared to a required Energy Efficiency Existing Ship Index based on an applicable reduction factor expressed as a percentage relative to the Energy Efficiency Design Index (EEDI) baseline.

It must be calculated for ships of 400 gt and above, in accordance with the different values set for ship types and size categories. The calculated attained EEXI value for each individual ship must be below the required EEXI, to ensure the ship meets a minimum energy efficiency standard.

What is a Carbon Intensity Indicator rating?

The CII determines the annual reduction factor needed to ensure continuous improvement of a ship’s operational carbon intensity within a specific rating level.

The actual annual operational CII achieved must be documented and verified against the required annual operational CII. This enables the operational carbon intensity rating to be determined.

How will the new ratings work?

Based on a ship’s CII, its carbon intensity will be rated A, B, C, D or E (where A is the best). The rating indicates a major superior, minor superior, moderate, minor inferior, or inferior performance level. The performance level will be recorded in a “Statement of Compliance” to be further elaborated in the ship’s Ship Energy Efficiency Management Plan (SEEMP).

A ship rated D or E for three consecutive years,  will have to submit a corrective action plan to show how the required index of C or above will be achieved. Administrations, port authorities and other stakeholders as appropriate, are encouraged to provide incentives to ships rated as A or B.

A ship can run on a low-carbon fuel clearly to get a higher rating than one running on fossil fuel, but there are many things a ship can do to improve its rating, for instance through measures, such as:

  • Hull cleaning to reduce drag;
  • Speed and routeing optimization;
  • Installation of low energy light bulbs;
  • Installation of solar/wind auxiliary power for accommodation services.

MARPOL Annex VI amendments enter into forceMARPOL Annex VI amendments enter into force
MARPOL Annex VI amendments enter into forceMARPOL Annex VI amendments enter into force
MARPOL Annex VI amendments enter into forceMARPOL Annex VI amendments enter into force

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