CIGN 05/2022 Rev 1
Guidance Note
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To: SHIP OWNERS AND MANAGERS
1. BACKGROUND
1.1 In 2021, IMO adopted new CO2 regulations which apply to most existing ships above 5,000 GT.
1.2 These regulations form part of IMO’s Greenhouse Gas Reduction Strategy. The 2021 regulations address –
• The Energy Efficiency Existing Ship Index (EEXI) addressing technical efficiency;
• The Carbon Intensity Indicator (CII) addressing operational efficiency; and
• An enhanced Ship Energy Efficiency Management Plan (SEEMP Part III) addressing the management of energy efficiency measures.