This is a legacy page. Please click here to view the latest version.
Wed 26 Oct 2016, 07:26 GMT

Fuel-saving rigid sail granted patent in Japan


Commercial production of EnergySail technology is planned for 2018.



Eco Marine Power (EMP), a developer of fuel and emission reduction solutions for ships, has announced that a patent covering core elements of its EnergySail technology has been granted by the Japan Patent Office. The granting of this patent will allow for the licensing of the technology to proceed so that commercial production of the EnergySail and associated technologies can begin in 2018.

The EnergySail is a rigid sail device that can be fitted with a range of renewable energy technologies such as solar panels or wind power devices. The flexible nature of the EnergySail design allows for it to be upgraded during the life cycle of a ship so that newer technologies can be incorporated as they become available.

The patent covers the main design elements incorporated into the EnergySail, including its grid structure, functional panels and device for reducing sudden wind loads. These elements can be applied to a sail type device or used as a platform for wind power and solar power devices.

An example of how the EnergySail could be incorporated into a modern ship design is the Aquarius Eco Ship. This low emission, sustainable ship design concept includes an EnergySail array and other associated technologies so that solar and wind power can be used together to reduce fuel consumption and lower noxious gas emissions on ships.

Greg Atkinson, Chief Technology Officer at EMP, stated: "This is another important milestone for Eco Marine Power and the granting of this patent illustrates the innovative nature of the fuel and emission reduction solutions we are developing for shipping. The technologies associated with this patent have applications across shipping and could also be incorporated into coastal or offshore renewable energy projects."

The first production version of EnergySail has been manufactured by Teramoto Iron Works of Onomichi, Japan. This company was also involved in the production of rigid sails in Japan during the 1980s.

Earlier this year, EMP was also granted a patent in Japan and the United States for another concept related to the use of wind and solar power from ships.


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.


↑  Back to Top