Journal of Marine Science and Engineering, Journal Year: 2025, Volume and Issue: 13(5), P. 973 - 973
Published: May 17, 2025
The amendment to MARPOL Annex VI, which limits the sulfur content in marine fuels a maximum of 0.5 wt.%, came into effect January 2020. This includes reducing oxide (SOX) emissions and establishing nitrogen (NOX) emission standards (Tiers I, II, III) based on ship’s engine type construction date. Furthermore, regulations require oil tankers control volatile organic compound (VOC) prohibit installation new equipment containing ozone-depleting substances. After four-year exploration phase, global shipping companies still lack consistent evaluation criteria for selection use alternative fuels, resulting divergence across industry. According latest data, methanol can reduce NOX, SOX, particulate matter (PM) by approximately 80%, 99%, 95%, respectively, compared traditional heavy fuel oil. green has potential near-zero greenhouse gas meet stringent Emission Control Areas. Therefore, this study adopts cost-benefit analysis method evaluate feasibility implementation benefits two promising strategies: dual very low-sulfur (VLSFO). A 6600-TEU container ship was selected as representative case, conducted replacing an older with newly built one. reductions total pollutants CO2-equivalent ship, well cost-effectiveness each specific strategy, were calculated. found that, first five years operation, incremental cost Vessel A, uses 100% VLSFO, will be significantly lower than that B, blend 30% e-methanol + 70% VLSFO fuel. scenario without any improvement strategies, Vessels B increase 69.90% 178.15%, over years. effectively reduced equivalent (CO2e) CO2, CH4, N2O 24.72% years, while CO2e amount 12.18%. ratio (CBR) pollutant reduction is higher within operation. However, terms reduction, CBR becomes after 4.7 A’s strategy should considered short-term option whereas more suitable long-term solution
Language: Английский