Fri 12 Apr 2013, 11:41 GMT

Dual-fuel engines obtain EPA certification


Manufacturer anticipates an increase in US demand for its dual-fuel engines as a result.



Leading solutions and services provider Wärtsilä has obtained certification of emission standard compliance from the United States Environmental Protection Agency (EPA) for its Wärtsilä 34DF dual-fuel engines.

It will enable Wärtsilä to enter the American market with marine engine technology that offers operators and owners the option of using either diesel or gas as fuel. The certification was obtained on 17 January 2013.

"The Wärtsilä 34DF is the first dual-fuel engine fulfilling the EPA requirements and this is a very important statutory recognition of Wärtsilä dual-fuel technology," said Andrea Bochicchio, Director, Product Management & Engineering, Product Centre 4-stroke, Wärtsilä PowerTech.

With the passing of this compliance milestone, Wärtsilä anticipates that market demand in the USA for its range of dual-fuel engines will further increase. The first engines will equip the 'Harvey Energy', an offshore supply vessel built for Harvey Gulf International Marine.

Four sister vessels will shortly be supplied with the same Wärtsilä engines, thus further demonstrating both the viability of liquefied natural gas (LNG) as a marine fuel and its growing popularity among ship owners and operators.

"Economic and environmental factors are having a tremendous impact on the shipping industry, and at Wärtsilä we firmly believe that flexible fuel options are a positive step in alleviating these challenges. Our dual-fuel engine technology enables environmental legislation to be met where necessary, while maintaining the ability to use conventional diesel fuel in unrestricted areas," said Giulio Tirelli, Director, Wärtsilä Ship Power, 4-stroke Portfolio & Applications.

EPA certification applies to United States-flagged vessels. The Wärtsilä dual-fuel engine capability enables ships to be operated on either conventional liquid marine fuels or LNG.

According to Wärtsilä, the switch between fuels can be made seamlessly without loss of power or speed. Such fuel flexibility enables compliance with emission regulations in controlled areas, while giving operators the option of determining the fuel according to cost and availability.


Port of Singapore. Trailing 3-month bunker sales fall to lowest since April 2025 in Singapore  

Bunker volume of 13.569m tonnes sold between April and June was worst result in 14 months.

Glander International Bunkering logo. Glander International Bunkering reports $23.4m pre-tax earnings amid volatile shipping markets  

Bunker trading company says new fuels volumes doubled over the past year, driven by client demand.

Aerial view of tanker vessel at sea. ISO-compliant fuels increasingly causing operational problems, Lloyd’s Register warns  

Latest FOBAS report finds fuel quality risk shifting beyond off-specification fuels.

Bioethanol bunkering at the Port of Santos. Bunker One completes Latin America’s first bioethanol bunkering of a deep-sea container vessel  

500,000-litre delivery at Santos marks a first for bioethanol as a marine fuel.

Maritime Technologies Forum (MTF) logo. MTF issues safety management guidelines for methanol-fuelled ships  

New MTF report offers recommendations for developing and strengthening safety management systems for methanol as a fuel.

Kapitan Dranitsyn icebreaker. European shipowners call for permanent EU ETS derogations for islands, outermost regions and ice-classed vessels  

ECSA urges the European Commission to extend maritime ETS exemptions beyond 2030 ahead of directive revision.

Global Maritime Forum logo. Compliance pooling could help unlock investment in zero-emission marine fuels, says Getting to Zero Coalition  

A new insight brief argues pooling models must evolve to support long-term e-fuels offtake.

Levante LNG and Legend of the Seas STS bunkering operation. Peninsula performs maiden bio-LNG delivery in Cádiz  

Bunker firm has now supplied all three of Royal Caribbean Group’s Icon-class vessels with bio-LNG.

Shawn Ho, Oilmar. Oilmar appoints Shawn Ho as senior manager for business development and bunker trading in Singapore  

Marine fuel seller hires experienced industry professional to bolster its Singapore operations.

Island Horizon vessel. Island Oil expands fleet with acquisition of two tankers for Mediterranean operations  

Island Polaris and Island Horizon join bunker firm's fleet of vessels.