Abstract: The shipping industry, as a large carbon emitter, has attracted the attention of the international community. The International Maritime Organization (IMO) is the maker of carbon emission policies for the shipping industry and has successively issued a series of carbon emission reduction policies. The carbon emission policies of IMO in the last ten years have been reviewed. Based on the 2023 IMO Strategy on Reduction of GHG Emissions from Ships, the main influencing factors of key parameters corresponding to the mandatory measures in the current policies are studied, and typical sample ships are selected to calculate the key parameters, and to analyze the state-of-the-art and main problems of the carbon emissions from ocean-going vessels. The technological paths to address the mandatory parameters in the current shipping carbon emission reduction policies are explored based on the emissions of the shipping industry and the status of various technological paths, according to the Guidelines on Life Cycle GHG Intensity of Marine Fuels. It provides suggestions and references for the path selection and future technological development of the current shipbuilding industry to meet the IMO carbon emission policies.

Key words: international maritime organization (IMO), shipping industry, carbon reduction policy, mandatory parameter

摘要： 航运业作为碳排放大户,已受到国际社会的密切关注,国际海事组织（international maritime organization, IMO）是航运业碳排放政策的制定者,已先后出台一系列碳减排政策。该文梳理了近十几年的IMO碳排放政策,基于《2023年IMO船舶温室气体减排战略》,研究当前政策中强制性措施所对应关键参数的主要影响因素,并选取典型案例船舶,核算其关键参数值,分析远洋船舶的碳排放现状及主要问题。文章基于航运业排放及各技术路径现状,以《船用燃料全生命周期温室气体强度导则》为依据,探索应对当下航运碳减排政策中强制性参数的技术路径,为当前船舶行业满足IMO碳排放政策的路径选择和未来技术发展方向提供了重要参考。

关键词: 国际海事组织, 航运业, 碳减排政策, 强制性参数