Marpol Annex VI requires ships to reduce SOx emissions either by burning low sulphur fuel or by cleaning the exhaust gas. Exhaust gas cleaning systems (EGCS), also known as "scrubbers", have been fitted onboard many ships as an acceptable equivalent method of compliance under Marpol Annex VI.
Concerns that wash water discharged from open-loop scrubbers may have harmful effects on local waters has however led to many ports introducing regulations either to ban ships fitted with open-loop scrubbers or to impose additional requirements relating to the discharge of wash water from such systems. To assist operators to avoid issues with local regulations, the Exhaust Gas Cleaning System Association (EGCSA), launched a free-to-access Global Marine SOx Emissions Regulation map on their website, www.egcsa.com. This map provides links (please click on the markers and the ECA boundary lines) to verified information on local regulations.
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