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Regulations for Emissions from Vehicles and Engines

Final Rule for Control of Emissions From New Marine Compression-Ignition Engines at or Above 30 Liters per Cylinder

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Rule Summary

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EPA is finalizing emission standards for new marine diesel engines with per-cylinder displacement at or above 30 liters (called Category 3 marine diesel engines) installed on U.S. vessels. We are also finalizing a change to our diesel fuel program that will allow for the production and sale of 1,000 parts per million (ppm) sulfur fuel for use in Category 3 marine vessels. In addition, the new fuel requirements will generally forbid the production and sale of other fuels above 1,000 ppm sulfur for use in most U.S. waters, unless alternative devices, procedures, or compliance methods are used to achieve equivalent emissions reductions. 

Rule History

Additional Resources

Fact Sheet

Technical Support Document

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