An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Fuels Registration, Reporting, and Compliance Help

Guidance Documents for Marine Fuel

The following guidance documents apply to marine fuel used in ocean-going vessels. All vessels that operate in the North American Emission Control Area (ECA) are required to be in compliance with the International Convention for the Prevention of Pollution from Ships (MARPOL) Annex VI ECA fuel oil sulfur standard. Beginning in 2015, large marine diesel engines propelling large ships and ocean-going vessels (Category 3 Engines) operating within the ECAs must generally use fuel with 1,000 ppm sulfur or less.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.