Infographic North American Emission Control Area Share ECAs are established by the IMO to limit emissions from ships in coastal areas. In North America’s ECA, ships must burn fuel or scrub exhaust to emit a maximum of 0.1% sulphur content since January 2015. Published March 25, 2020 | Last modified on June 20, 2024 You may also be interested in Microsite Marine Shipping & You Article Research Spotlight: Véronique Nolet Microsite Oil Spill Response