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IMO - International Maritime Organization (IMO)'s page on ECA


International Maritime Organization's page outlining emissions control areas currently in effect as well as those which have been proposed.

From the Page:

The North American Emission Control Area (ECA), under the International Convention for the Prevention of Pollution from Ships (MARPOL), comes into effect from 1 August 2012, bringing in stricter controls on emissions of sulphur oxide (SOx), nitrogen oxide (NOx) and particulate matter for ships trading off the coasts of Canada, the United States and the French overseas collectivity of Saint-Pierre and Miquelon. Amendments to MARPOL Annex VI (Regulations for the prevention of air pollution from ships) to establish the North American ECA entered into force on 1 August 2011, with a 12-month period before becoming effective.

There are now three designated ECAs in effect globally, the other two being sulphur oxide ECAs only in the Baltic Sea area and the North Sea area.

Other items on the page include the coordinates for the North American ECA, ECA emission limits, and links to other IMO initiatives as well as a link to related content on the EPA's website regarding the North American ECA.