The International Council on Clean Transportation says if global shipping operations are treated as a country, then its carbon footprint is the sixth largest in the world, almost equal to Germany. Even while shipping continues to pollute the planet in a significant way, it was not accounted for in the Paris agreement on climate change to the disbelief of countries threatened by rising sea levels and environmentalists. The starkly noticeable omission in Paris agreement is now sought to be corrected by IMO by laying out strategies to prevent atmospheric pollution, including greenhouse gas (GHG) emissions by ships.
Ships use heavy fuel oil which is very high in sulphur content. That is why the shipping industry accounts for emissions of 13 per cent of global sulphur and 15 per cent of nitrogen oxides. Not surprisingly, IMO has announced January 1, 2020, as the cut off date for lowering of marine fuel’s sulphur content to 0.5 per cent from 3.5 per cent. As low sulphur marine oil will be more expensive, the transition will have major financial implications for ship owners. According to one estimate, if all vessels start using low sulphur fuels, then the additional burden for the industry will be around $60 billion. International Chamber of Shipping, however, says the current 50 per cent price difference between low sulphur and residual fuel will rise in the event of a demand spurt for cleaner energy 2020 onwards.