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IMO’s Annual Efficiency Ratio comes in for heavy criticism

With 12 months to go until the introduction the Carbon Efficiency Indicator, weaknesses in carbon reporting are making headlines.

Fierce criticism has been heaped on the International Maritime Organization-approved Annual Efficiency Ratio (AER), the key measure to define how ships fare when the Carbon Efficiency Indicator (CII) starts in just over a year.

Ships will have energy ratings from A to E, not dissimilar to household appliances, come January 1 2023.The CII is an operational requirement applicable to ships above 5,000 gt and measures the operational carbon intensity of a vessel. This translates to the carbon em...

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