EPA Grants Marine Engine Exemption to Support New England's Lobster Industry and Economic Growth
BOSTON (July 22, 2026) – Today, U.S. Environmental Protection Agency (EPA) is exempting a specific new lobster boat model in Chatham, Massachusetts, from Tier 4 engine requirements in accordance with the agency's authority. The agency is utilizing this flexibility for the first time to support American boat builders, lobstermen, and the New England maritime communities.
Lobster boats face unique challenges compared to their fishing counterparts, including needing larger holding tanks and having different cargo designs. Since EPA's marine Tier 4 regulations were adopted in 2008, the lobster industry's needs have changed, including boats requiring more engine power to reach lobster populations. Following concerns from the lobster industry, EPA adopted an exemption for certain boats needing relief from Tier 4 requirements beginning in 2024.
"Lobstering is a way of life in New England. Ensuring this cultural tradition and economic driver can continue is vital to our coastal communities," said EPA Regional Administrator Mark Sanborn. "EPA regulations already have the flexibility to support American businesses and workers. We encourage others in the industry to apply for a Tier 4 waiver if they are facing similar challenges. This is EPA's commitment to common-sense governing."
After carefully reviewing information submitted by the boat builder, and consulting industry experts and the U.S. Coast Guard, EPA determined that the currently available Tier 4 engines cannot fit within the applicant's vessel design while maintaining essential operational requirements. Under today's action, EPA will allow a specific vessel that demonstrates it meets the exemption criteria and was identified in the application to use a Tier 3 engine. The exempt engine must meet Tier 3 emission standards and be labeled so it cannot be used on other vessels.
EPA collaborated with stakeholders to increase awareness of the existing exemption process and ensure vessel builders understand the options available under current regulations when unique vessel designs and operational needs present compliance challenges. The agency will continue to individually review any new requests in accordance with the existing regulatory requirements and the law.
This action demonstrates EPA's commitment to practical solutions that support America's maritime industries and preserve jobs while maintaining environmental protections required under the law.
To learn more about EPA's exemption process or applying for an exemption please visit: https://www.epa.gov/regulations-emissions-vehicles-and-engines/epas-tier-4-marine-diesel-engine-waiver