MARPOL Annex 6 Chapter 4 specifically deals with the regulations and requirements related to the “Energy Efficiency Existing Ship Index” (EEXI) and the “Carbon Intensity Indicator” (CII). These regulations are aimed at improving the energy efficiency of existing ships to reduce their carbon emissions.
Here are some key points regarding:
MARPOL Annex 6 Chapter 4:
1. Energy Efficiency Existing Ship Index (EEXI):
– The EEXI is a mechanism designed to assess the energy efficiency of existing ships. It measures a ship’s energy efficiency in terms of carbon dioxide (CO2) emissions per transport work, typically expressed in grams of CO2 per ton-mile.
– Ships are required to comply with EEXI requirements to meet specific energy efficiency standards. These standards are determined based on a reference line, which is calculated using a formula outlined in the annex.
– Ships that do not meet the required EEXI standards must take measures to improve their energy efficiency, such as retrofitting more efficient equipment or technologies.
2. Carbon Intensity Indicator (CII):
– The Carbon Intensity Indicator (CII) is a means of assessing and measuring a ship’s carbon emissions in relation to its actual transport work. It is expressed as grams of CO2 per tonne-mile.
– The CII is used to evaluate and rank a ship’s performance in terms of carbon emissions efficiency.
– Ships are required to calculate and report their CII values to demonstrate compliance with the emissions reduction requirements outlined in MARPOL Annex VI.
3. Implementation and Compliance:
– Ships that do not comply with the EEXI and CII requirements may be subject to penalties or restrictions on their operations.
– Flag States and relevant authorities are responsible for verifying compliance and enforcing the regulations.
– The annex includes guidelines and requirements for the assessment, calculation, and verification of EEXI and CII values.
4. Phase-In Period:
– The implementation of the EEXI and CII requirements occurs in phases, allowing existing ships time to adapt and improve their energy efficiency gradually.
– The phase-in period includes specific dates by which ships must comply with the EEXI and CII requirements, based on their type, size, and age.
5. Monitoring and Reporting:
– Shipowners and operators are required to monitor and report their EEXI and CII values to flag States or recognized organizations.
– This reporting helps in assessing and verifying compliance with the energy efficiency standards.
MARPOL Annex 6 Chapter 4 is an essential component of global efforts to reduce greenhouse gas emissions from the shipping industry. It establishes a framework for improving the energy efficiency of existing ships, thereby contributing to the reduction of carbon emissions from maritime transportation. The goal is to make shipping more environmentally sustainable while promoting the efficient use of energy resources.
