Over 90 percent of world trade is carried across the world’s oceans by some 90,000 marine vessels. Like all modes of transportation that use fossil fuels, ships produce carbon dioxide emissions that significantly contribute to global climate change and acidification. Besides carbon dioxide ships also release a handful of other pollutants that contribute to the problem.
In fact, if global shipping were a country, it would be the sixth largest producer of greenhouse gas emissions. Only the United States, China, Russia, India and Japan emit more carbon dioxide than the world’s shipping fleet. Nevertheless, carbon dioxide emissions from ocean-going vessels are currently unregulated.Shipping Pollution | Oceana Europe