The International Maritime Organisation (IMO) has adopted a new series of key mandatory measures to cut carbon emissions in container shipping, including a ship rating system to measure carbon intensity.
The IMO said the new measures will require all ships to calculate their Energy Efficiency Existing Ship Index (EEXI) following technical means to improve consumption and establish annual operational carbon intensity indicator (CII) and a subsequent rating.
Carbon intensity links the GHG emissions to the amount of cargo carried over distance travelled.
Ships will get a rating of their energy efficiency (A, B, C, D, E – where A is the best). Administrations, port authorities and other stakeholders as appropriate, are encouraged to provide incentives to ships rated as A or B also sending out a strong signal to the market and financial sector.
A ship rated D for three consecutive years, or E, is required to submit a corrective action plan, to show how the required index (C or above) would be achieved.
IMO Secretary-General Kitack Lim said the adoption of the new measures would build on IMO’s previously adopted mandatory energy efficiency measures, to lead shipping on the right path towards decarbonisation.
“The path to decarbonization is a long, but also a common path in which we need to consider and respect each other’s views. We have made a considerable amount of progress since the start of our journey,” Lim said.
“Your progress will continue to provide the benefit of experience to be able to make ambitious, and evidence-based decisions for phase 3 of the implementation of the operational measure which will be further strengthened and developed taking into account the review of the short-term measure and the latest climate science.”
The amendments to MARPOL Annex VI (adopted in a consolidated revised Annex VI) are expected to enter into force on 1 November 2022, with the requirements for EEXI and CII certification coming into effect from 1 January 2023.
This means that the first annual reporting will be completed in 2023, with the first rating given in 2024.
A review clause requires the IMO to review the effectiveness of the implementation of the CII and EEXI requirements, by 1 January 2026 at the latest, and, if necessary, develop and adopt further amendments.