Ship and ferry emissions and their thick, black plumes of smog will be reduced by 2022.
At its worst, the type of ship fuel used here has been described as "Marmite-type", thick and black, but the Government has agreed to sign an international treaty to target ship emissions.
Associate Transport Minister Julie Anne Genter said joining the Annex VI of MARPOL, an International Maritime convention for the prevention of pollution from ships, would improve the health and environmental impact of shipping emissions, particularly around port communities.