USCG: Engine types accepted under MARPOL Annex VI

The US Coast Guard Office of Commercial Vessel Compliance issued a circular to outline how the Coast Guard will enforce MARPOL Annex VI Regulation 13.5.1.2 due to the unavailability of engines needed to comply with this regulation.

MARPOL Annex VI Regulation 13.5.1.2 generally prohibits the operation of any engine in the North American and US Caribbean Sea NOx Emission Control Areas (ECA) that does not comply with the MARPOL Annex VI Tier III requirements if the engine is installed on a ship...

https://safety4sea.com/uscg-engine-types-accepted-under-marpol-annex-vi/

USCG: Which engines can be certified by US EPA as meeting Clean Air Act Tier 3

USCG published a Work Instruction (WI) outlines how it will enforce MARPOL Annex VI Regulation because of the unavailability of engines needed to comply with this regulation.

Instead of complying with MARPOL Annex VI Tier III performance standards, engines covered by this guidance can be certified by the US Environmental Protection Agency (EPA) as meeting Clean Air Act Tier 3 requirements under 40 CFR part 1042.

MARPOL Annex VI Regulation generally does not allow the operation of any engine in...

https://safety4sea.com/uscg-which-engines-can-be-certified-by-us-epa-as-meeting-clean-air-act-tier-3/

Incorporating MARPOL Annex VI into national law

In its second Shipping Emissions guide, IMO provides an overview of the considerations a State needs to take into account in order to decide to accede to the 1997 Protocol and to give full effect to MARPOL Annex VI.

The guide ‘Incorporation of MARPOL Annex VI into national law’ advises policy makers and legislators in countries preparing for accession to the 1997 Protocol or for contracting Parties to the 1997 Protocol which have not yet developed the legal framework to implement the regulations...

https://safety4sea.com/incorporating-marpol-annex-vi-into-national-law/

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