Domestic Regulations for Emissions from Marine Compression-ignition (Diesel) Engines
EPA is amending the national marine diesel engine program to provide relief provisions to address concerns associated with obtaining and installing certified Tier 4 marine diesel engines in certain high-speed commercial vessels. The relief is in the form of additional lead time for qualifying engines and vessels. EPA is also modifying the marine diesel engine certification program by streamlining engine certification requirements. These changes will promote Tier 4 certification of engines with high power density.
Overview
EPA has adopted exhaust emission standards for marine diesel engines installed in a variety of marine vessels ranging in size and application from small recreational vessels to tugboats and large ocean-going vessels.
These domestic emission standards apply for engines installed on U.S. vessels.
Additional international requirements may apply for engines installed on U.S. vessels that operate in foreign ports and waters and for foreign vessels.
List of Related e-CFR Links
See the Electronic Code of Federal Regulations (e-CFR) for the full text of current domestic regulations that apply to marine diesel engines and vessels.
| e-CFR link | Summary of what you will find |
|---|---|
| 40 CFR Part 1042 | Emission standards and certification requirements for Tier 3 and Tier 4 marine diesel engines |
| 40 CFR Part 1043 | Regulations implementing MARPOL Annex VI, including requirements for in-use fuels, marine diesel engines above 130 kW, and vessels with those engines |
| 40 CFR Part 1065 | Exhaust emission test procedures (for lab and in-field testing) |
| 40 CFR Part 1068 | General compliance provisions |
| 40 CFR Part 80 | Sulfur limits for marine diesel fuel |
| 40 CFR Part 89 | Emission standards and certification requirements for Tier 1 and Tier 2 marine diesel engines below 37 kW |
| 40 CFR Part 94 | Emission standards and certification requirements for Tier 1 and Tier 2 marine diesel engines at or above 37 kW |
Help
List of Related Regulations
Below is a list of all domestic regulations related to emissions from marine compression-ignition (diesel) engines.
- Rule summaries;
- Regulatory impact analyses;
- Comment summaries;
- Rule histories (including proposed rules); and
- Fact sheets.*
*Note: Rule-related materials vary by rule.