An official website of the United States government.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Regulations for Emissions from Vehicles and Engines

Regulations for Emissions from Marine Spark-Ignition Engines

On this page:


EPA standards for exhaust and evaporative emissions reduce the environmental impact from marine spark-ignition engines and vessels. The emission standards require manufacturers to control exhaust emissions from the engines and evaporative emissions from fuel tanks and fuel lines. This page provides general information for consumers, boaters, and other users of marine vessels that use gasoline engines (or other spark-ignition engines). There are also links to the related regulations and supporting documents.

Searchable/Sortable Table Instructions

The table default is to show all table entries. To change the number of entries shown, click the drop-down arrow next to the word "All".


The column with the blue arrow indicates which column your table is sorted by.
For example, if you saw the image below, the table would be sorted in ascending order on the "Technology Type" column.

Image indicating what column your table is sorted by.

To change which column your table is sorted by, click an arrow in another column.
For example, if you wanted to sort by descending order on the "Applicable for" column in the image below, you would click the down arrow.

Image indicating how to sort your table using another column heading.

You can filter the table using the Search box. Start typing in the search box and your table will automatically display only rows that contain what you entered in the search box.

Image showing where to type in terms to filter the results.

Top of Page

List of Related e-CFR Links

See the Electronic Code of Federal Regulations (e-CFR) for the full text of current regulations that apply to marine SI engines.

e-CFR link Summary of what you will find
40 CFR Part 1045 Exhaust emission standards for 2010 and later model year engines
40 CFR Part 1060 Evaporative emission standards
40 CFR Part 1065 Exhaust emission test procedures (for lab and in-field testing)
40 CFR Part 1068 General compliance provisions
40 CFR Part 91 Original exhaust emission standards and compliance program; Test procedures available through 2012 model year

Top of Page


For help on using the table:

List of Related Regulations

Below is a list of all regulations related to emissions from marine vessels with spark-ignition engines. 

Click the regulation titles for additional information, including:
  • Rule summaries;
  • Regulatory impact analyses;
  • Comment summaries;
  • Rule histories (including proposed rules); and
  • Fact sheets.*

*Note: Rule-related materials vary by rule.

Regulation Title Regulation Date
Greenhouse Gas Reporting Program (GHGRP) 2009/10
Final Rule for Control of Emissions From Nonroad Spark-Ignition Engines and Equipment 2008/10
Final Rule for Control of Emissions From New Marine Compression-Ignition Engines at or Above 30 Liters per Cylinder 2010/04
Final Rule for Amendment to Emission Requirements Applicable to New Gasoline Spark-Ignition Marine Engines 1997/04
Final Rule for Technical Amendments for Marine Spark-Ignition Engines and Vessels 2008/10
Direct Final Rule for Technical Amendments for Marine Spark-Ignition Engines and Vessels 2010/09
Final Rule for Gasoline Spark-Ignition Marine Engines; Exemptions for New Nonroad Compression-Ignition Engines at or Above 37 Kilowatts and New Nonroad Spark-Ignition Engines at or Below 19 Kilowatts 1996/10
Final Rule for Test Procedures for Testing Highway and Nonroad Engines and Omnibus Technical Amendments 2005/07

Top of Page

Regulations for Emissions from Vehicles and Engines Home