The CII (Carbon Intensity Indicator), as part of the global IMO Green House Gases Strategy/Regulation, describes a ship’s carbon efficiency. It is measured in terms of grams of CO2 emitted per cargo-carrying capacity per nautical mile. The CII is an evolving operational indicator, unlike EEXI and EEDI, which are related to the ship’s design.

The amendments to MARPOL Annex VI relating to CII certification comes into effect from 1st January 2023. Shipowners shall complete their first CII reporting in 2023, with the first rating allocated in 2024. The requirements will cover ships of 5,000 GT and above. Vessels impacted are also required to report on fuel consumption as a part of the IMO Data Collection System (DCS).

The rating thresholds will tighten each year through the application of annual reduction factors. This will require an 11% CO2 reduction by 2026 compared to the reference values of 2019.

The IMO has set guidelines to reduce the carbon intensity of international shipping by at least 40% by 2030, compared to 2008. The reference year for carbon intensity is 2019. Ships are allocated an annual operational carbon intensity rating: “A” (Major Superior), “B” (Minor Superior), “C” (Moderate), “D” (Minor Inferior), or “E” (Inferior). This is to be recorded in the ship’s Ship Energy Efficiency Management Plan (SEEMP). Ships with a “D” rating for three consecutive years or “E” rating for one year are required to have an approved improvement action as part of their SEEMP.

We at ‘Broadside Marine’ carry out comprehensive CII calculations with our dedicated software to ensure maximum accuracy in evaluating the attained CII ratings of your vessel. We also provide you with the appropriate CII Forecast Report required for vessel optimization along with ‘Technical Guidance’ based on estimated CII rating to help you stay ahead from your competitors in this epic voyage towards ‘Decarbonization’.

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