1、 1 Executive summary In July 2023,the IMO adopted the“2023 IMO Strategy on Reduction of GHG Emissions from Ships”(2023 IMO GHG Strategy).This updated strategy builds upon the initial strategy adopted back in 2018,now incorporating a net-zero GHG emission goal to be achieved by or around 2050.The 202

2、3 IMO GHG Strategy sets the following numerical targets for reducing GHG emissions from international shipping,as well as indicative checkpoints for achieving these reductions.Notably,these targets and indicative checkpoints must consider the entire life cycle GHG emissions associated with the fuels

3、 used by ships.Targets to be achieved by the measures(rules)developed by the IMO Net-zero GHG emissions by or around 2050 5%to 10%uptake of zero GHG emission fuels,etc.by 2030 40%reduction in CO2 emissions(per transport work)by 2030(compared to 2008)Indicative checkpoints to achieve net-zero GHG emi

4、ssions target 20%to 30%reduction in GHG emissions by 2030(compared to 2008)70%to 80%reduction in GHG emissions by 2040(compared to 2008)What is the significance of the numerical targets outlined in the 2023 IMO GHG Strategy?Nippon Kaiji Kyokai(ClassNK)has conducted estimations1 to promote understand

5、ing of the 2023 IMO GHG Strategy.These estimations pertain to the minimum 20%and 70%reductions in GHG emissions compared to 2008,which are set as indicative checkpoints for 2030 and 2040,respectively,in international shipping.The estimations involve determining the allowable“GHG emissions and the re

6、quired“introduction amount of zero-emission fuels and ships for international shipping to achieve these indicative checkpoints.The summarized results are as follows.Allowable GHG emissions for international shipping in 2030/2040 Table 1 outlines the allowable GHG emissions for international shipping