Exam Question
Explain the concept of CII rating and critically discuss the role of measuring metrics of AER and EEOI. What are the measures required to be taken by the vessel to improve its CII rating? (16)
Class 1 (Chief Engineer)
Engineering Management
📅 Jan 2024
Reference Answer
### 1. Concept of Carbon Intensity Indicator (CII)
The Carbon Intensity Indicator (CII) is a mandatory operational measure under MARPOL Annex VI, implemented from 1st January 2023, to assess the energy efficiency of a ship's operation. It quantifies the carbon dioxide (CO2) emissions per unit of transport work, effectively measuring how efficiently a ship transports goods or passengers. The CII provides a rating for each vessel, which is used to drive continuous improvement in the global fleet's operational efficiency.
**Key Aspects of CII:**
* **Rating System**: Each vessel of 5,000 GT and above is given an annual rating from A to E:
The Carbon Intensity Indicator (CII) is a mandatory operational measure under MARPOL Annex VI, implemented from 1st January 2023, to assess the energy efficiency of a ship's operation. It quantifies the carbon dioxide (CO2) emissions per unit of transport work, effectively measuring how efficiently a ship transports goods or passengers. The CII provides a rating for each vessel, which is used to drive continuous improvement in the global fleet's operational efficiency.
**Key Aspects of CII:**
* **Rating System**: Each vessel of 5,000 GT and above is given an annual rating from A to E:
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