Marine Vessels and Equipment

Upgrade or replace diesel-powered marine engines with funding from the Carl Moyer Program. This program aims to cut air pollution from heavy-duty diesel engines in California.

Funding is offered on a first-come, first-served basis until all funds have been spent. Applications must be complete to be considered for funding.

Project Types

Funds are available for the following project types:

  • Engine replacement (repower) - replace a vessel’s engine with the cleanest available emission-certified engine
  • Remanufacture kit - install an engine remanufacture kit that reduces the engine’s emissions
  • Engine retrofit - install a CARB-verified diesel emission control strategy device (case-by-case).
  • Hybrid system - install an EPA-verified hybrid system
  • Vessel Replacement - replace a vessel to a new Tier 4-or-cleaner vessel (case-by-case).
  • Ship-side shore power - retrofit a marine vessel to enable shore-power connection (case-by-case)
  • Exhaust capture and control system - install an EPA-verified marine vessel exhaust capture and control system (case-by-case)

Eligible Vessels

  • Funding is available to reduce emissions from commercial or institutional marine vessels, such as charter fishing boats, commercial fishing boats, pilot boats, work boats, and research boats.
  • Funding is available for regulated commercial marine vessels, such as barges, crew and supply vessels, dredges, tour boats, ferries, tugboats, and towboats that comply with the CARB Commercial Harbor Craft Regulation.
  • Recreational and non-diesel-fueled vessels are not eligible for funding.

Project Requirements

  • Propulsion or auxiliary engines with 25 horsepower or greater.
  • Vessels and fleets must currently be in compliance with the CA Commercial Harbor Craft Regulation.
  • Vessels and equipment must operate within California Coastal Water Boundaries and the Air District’s jurisdiction, with priority given to those operating in areas highlighted in the Air District’s Priority Community Map or in Community Health Protection communities.
  • New engines must be installed and operational at least three years prior to the compliance deadline specified by the CARB Commercial Harbor Craft Regulation.
  • Applicants must provide records documenting equipment ownership and usage from the previous two continuous years.
  • Shore power and emissions capture applications must demonstrate that the project will result in emissions reductions that are surplus to the requirements of CA air quality regulations pertaining to ports operations and at-berth engines.

Rules and Regulations

Learn more about the CARB Harbor Craft regulation or contact ARB staff by email: or phone: 1-888-442-7238.

For information about the CARB Shore-Power regulation and other marine-related regulation, visit the CARB Ports Activities webpage.

How to Apply

  1. Determine your equipment’s eligibility for this program.
  2. Identify the project type for your marine vessel and engine(s).
  3. Gather the required information about your marine vessel, existing engine(s), and replacement engine(s) or equipment upgrade(s).
  4. Apply for funding online.
  5. Contact the Air District if you have any questions during the application process.

Workshops and Events

View the Calendar for upcoming workshops, events, and deadlines.

Additional Information

Learn more about marine vessel and equipment funding, including project type details, regulatory information, and application requirements.

Contact Us

Yu Zhang Liu
Senior Staff Specialist, Strategic Incentives


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Last Updated: 5/20/2015