Sectoral Analysis for Navigation
With the significant reduction in emissions from the electricity and road transport sectors over the past years, marine emissions have now become the major source in Hong Kong. Nonetheless, the emissions of SO2, RSP, FSP substantially decreased between 2013 and 2016 by 26% to 46%. In 2016, the emissions of SO2, NOx, RSP and FSP from marine vessels accounted for 49%, 37%, 38% and 44% of the total emissions, respectively.
The reductions of SO2, RSP and FSP emissions from marine vessels from 2010 to 2016 were primarily achieved through the marine control measures. The implementation of the Air Pollution Control (Marine Light Diesel) Regulation imposed a statutory sulphur limit of 0.05% on locally supplied marine light diesel since April 2014 (a 90% reduction from the previous limit of 0.5%). Besides, the Air Pollution Control (Ocean Going Vessels) (Fuel at Berth) Regulation implemented in July 2015 mandated ocean-going vessels to switch to low sulphur fuel not exceeding 0.5% (a reduction of around 80% from the previous average level of 2.7%) while at berth. The VOC emissions from the marine navigation sector were relatively low, hence a small fluctuation can make a big difference in percentage.
Among vessels, ocean going vessels (OGVs) were major emitters. As compared with 2010, the container throughput decreased by 16% in 2016.