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Wednesday, 29 July 2015
 
 
Ship emissions seen causing 60,000 deaths a year Print

Reuters, 7 November 2007

Emissions from ocean-going ships are responsible for about 60,000 deaths a year from heart and lung-related cancers, according to research published on Wednesday that calls for tougher fuel standards.

Shanghai, Singapore and Hong Kong, three of the world's five busiest ports, were likely to suffer disproportionate impacts from ship-related emissions, said the study, published in Environmental Science and Technology, a journal of the American Chemical Society.

"For a long time there's been this perception that ship emissions are out there in the ocean and they don't really affect anyone on land and I think this study shows that this is clearly false," said David Marshall, senior counsel at the Boston-based Clean Air Task Force, which co-commissioned the study.

"They do matter and they do need to be controlled."

Scientists said the fact that shipping takes place on the high seas -- away from populations who can readily see impacts of emissions -- was part of the reason the industry's fuel standards lagged those of the auto industry.

But sulfur emissions from international shipping represent about 8 percent of sulfur emissions from all fossil fuels, said James Corbett, one of the authors of the study.

Most ships run on bunker fuel, which is cheaper than distillate, but also more polluting. Corbett said it was also getting dirtier over time as distillate fuels become cleaner, since the sulfur driven out of distillates ends up in the residuals used by ships.

"The international treaty process at the IMO (International Maritime Organization) has been a slow process by which consensus is reached, rather than a process by which a regulatory authority can set standards that an industry must agree to," he said. 

Shanghai, Singapore and Hong Kong, three of the world's five busiest ports, were likely to suffer disproportionate impacts from ship-related emissions, said the study, published in Environmental Science and Technology, a journal of the American Chemical Society.

"For a long time there's been this perception that ship emissions are out there in the ocean and they don't really affect anyone on land and I think this study shows that this is clearly false," said David Marshall, senior counsel at the Boston-based Clean Air Task Force, which co-commissioned the study.

"They do matter and they do need to be controlled."

Scientists said the fact that shipping takes place on the high seas -- away from populations who can readily see impacts of emissions -- was part of the reason the industry's fuel standards lagged those of the auto industry.

But sulfur emissions from international shipping represent about 8 percent of sulfur emissions from all fossil fuels, said James Corbett, one of the authors of the study.

Most ships run on bunker fuel, which is cheaper than distillate, but also more polluting. Corbett said it was also getting dirtier over time as distillate fuels become cleaner, since the sulfur driven out of distillates ends up in the residuals used by ships.

"The international treaty process at the IMO (International Maritime Organization) has been a slow process by which consensus is reached, rather than a process by which a regulatory authority can set standards that an industry must agree to," he said. 

http://uk.reuters.com/article/environmentNews/idUKPEK34163320071107

 
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