Abstract

Shipping contributes approximately 3,1% of annual CO2 emission and the amount of CO2 emission it produces keeps on increasing year by year as international maritime trade cargo volume increases. One of the measures taken by IMO to decarbonize shipping is by releasing a new rule through MARPOL Annex VI, which is the Carbon Intensity Indicator (CII), which applies to all ships above 5000 GT to reduce CO2 emissions of ships by 40% in 2030, where ships will be given rating A to E. In this research, analysis is carried out on a ship regarding compliance with CII regulation based on actual operating conditions and estimation of CII rating until 2030. A technical and economic analysis is carried out based on one of the recommended actions to comply with CII regulation or to improve CII rating, which is ship speed optimization. Analysis of carbon tax reduction as one of the incentives for ships with an A or B rating is also carried out. Based on the calculation, it is found out that the ship used in this research obtains a B rating for the year 2022. Estimation of the CII rating for the coming years is done by using 7 different route scenarios and the STEAM2 FOC estimation method. Estimation of CII rating for the coming years if it operates using actual speed is between B – D. By reducing the speed to 6,8 knot or 7,8 knot a rating of A or B can be achieved. The economic impact of improving the CII rating from C to B is a decrease in net profit an average of 5,4% annually, 15,38% when improving the CII rating from C to A, and 10,73% when improving the CII rating from B to A.

Original languageEnglish
Pages (from-to)247-255
Number of pages9
JournalInternational Review of Mechanical Engineering
Volume18
Issue number5
DOIs
Publication statusPublished - 2024

Keywords

  • Carbon Intensity Index
  • Ship Energy Efficiency
  • Ship Voyage

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