Maritime

Reducing Pollution From Maritime Engines

Roughly 23% of the diesel exhaust in the Puget Sound region comes from the maritime sector. This sector includes diesel engines used in and around our region’s ports - powering drayage trucks, cargo-handling equipment,* ferries, tugboats, shipping vessels, etc.

We help businesses, government agencies and ports reduce diesel emissions and fuel costs through:Graph of diesel emission sources.

  • Best practices
  • Clean or alternative fuel
  • Engine upgrades
  • Repowers (engine replacement)
  • Retrofit technologies (exhaust retrofits and idle-reduction)
  • Vehicle replacements

*Note: For emissions inventory purposes, our agency includes cargo-handling equipment in the maritime sector and not in the off-road sector.

Projects

  1. At-Berth Clean (ABC) Fuels
  2. Harley Marine Engine Replace
  3. Island Tug & Barge Engines
  4. Idle Reduction Retrofits
  5. Equipment Retrofit & Replace
  6. SCRAPS Program
  7. Maritime Emission Inventory

At-Berth Clean (ABC) Fuels Incentive Program

  • Description: Partial reimbursement for shipping and cruise lines based on the volume of low-sulfur fuel burned while at berth at the Port of Seattle
  • Clean Air Strategies: Clean fuel
  • Air Pollution Reductions:
    • PM2.5: 35 tons to date
  • Project Period: Ongoing since 2009
  • Funding: $2,651,000 - Port of Seattle
  • Project Manager: Elizabeth Gilpin

Marine Engine Replacements

We are providing incentives to replace 12-19 engines on 6-8 harbor vessels currently operating in the Puget Sound. 

  • Project Period: Currently Open
  • Funding: U.S. Environmental Protection Agency (EPA)


Crowley Shore Power

Crowley installed landside shore power at their Tacoma location, allowing them to plug-in three tug boats to shore power to avoid running their diesel auxiliary engines when docked. 

  • Air Pollution Reductions:
    • Particulate Matter (PM 2.5) - 0.08 tons per year
    • Nitrogen Oxides (NOx) - 3.5 tons per year
    • Carbon Dioxide (CO2) - 311 tons per year
  • Project Period: 2017 - 2018
  • Funding: Washington State Department of Ecology
  • Partners: Crowley


Auxiliary Engine Replacements

Eight private businesses and public agencies replaced 16 auxiliary engines on ten different vessels. The vessels' size ranged from tug boats to cruise ships.  

  • Air Pollution Reductions:
    • Particulate Matter (PM 2.5) - 0.5 tons per year
    • Nitrogen Oxides (NOx) - 8.9 tons per year
    • Carbon Dioxide (CO2) - 336 tons per year
  • Project Period: 2014 - 2016
  • Funding: Washington State Department of Ecology
  • Partners: American Construction, Argosy Cruises, Crowley, Harley, Island Tug &  Barge, King County Department of Transportation, Victoria Vacations


Vessel Repower & Sustainability Project

Island Tug and Barge replaced seven engines (four main engines and three auxiliary engines) on two of their tug boats. They also upgraded two engines on a third vessel.  

This project included other elements, such as internship opportunities with Seattle Central Community College, a Harbor Vessel Workshop to talk with marine businesses about pollution reduction, stack testing, and the development of a white paper comparing the effectiveness of several harbor craft sustainable projects.

  • Air Pollution Reductions:
    • Particulate Matter (PM 2.5) - 0.8 tons per year
    • Nitrogen Oxides (NOx) - 30.6 tons per year
    • Carbon Dioxide (CO2) - 1,498 tons per year
  • Project Period: 2012 - 2015
  • Funding: U.S. Department of Transportation Maritime Administration, Washington State Department of Ecology, Puget Sound Clean Air Agency
  • Partners: American Construction, Argosy Cruises, Crowley, Harley, Island Tug &  Barge, King County Department of Transportation, Victoria Vacations


Tug Boat Repower

Harley Marine repowered one of their tug boats by replacing four old, unregulated diesel engines (two main engines and two auxiliary engines) with Tier 2 or better engines.   

Air Pollution Reductions:

  • Particulate Matter (PM 2.5) - 1.1 tons per year
  • Nitrogen Oxides (NOx) - 30 tons per year

  • Project Period: 2012 - 2014
  • Funding: U.S. Environmental Protection Agency (EPA), Washington State Department of Ecology
  • Partners: Harley Marine