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.


Photograph of ship with overlaid encircled text of EU regulations. DNV to host webinar on FuelEU Maritime compliance strategies  

Classification society offers insights as first reporting period closes and verification phase begins.

Photograph of ship with overlaid text showing narrowing MGO-biodiesel price spread. Biodiesel–MGO price spread narrows to $400–500/mt in Northwest Europe  

Bunker One says tighter spread creates opportunities for shipping companies pursuing decarbonisation targets.

Graphic for webinar 'Exmar: preparing to sail using ammonia as a marine fuel'. Exmar to discuss ammonia-fuelled vessel operations in webinar  

Shipowner will explore safety measures and partnerships for new dual-fuel ammonia carriers.

Aerial view of a container vessel. Skuld reports engine damage from CNSL biofuel blends amid rising alternative fuel adoption  

Marine insurer details operational challenges with biofuels, including FAME, CNSL and UCOME across member vessels.

Graphic for Exmar webinar titled titled 'Exmar: preparing to sail using ammonia as a marine fuel'. Event date: 15 April 2026. GRM and Bunker Holding to host webinar on Middle East war's impact on energy markets  

Webinar on 9 March will examine effects on crude oil, bunker and gas markets.

GENA Clean ammonia project pipeline chart, February 2026. Clean ammonia project pipeline reaches 145 MMT by 2034, but delivery concerns mount  

GENA Solutions reports 325 tracked projects, though over 70 have been frozen in 20 months.

Peninsula logo. Peninsula highlights supply chain strength amid Strait of Hormuz closure  

Marine fuel seller emphasises reliability as geopolitical disruption reshapes global bunker markets.

European Union member state flags. World Shipping Council backs EU maritime strategies but calls for faster trade simplification  

Industry body supports port security and decarbonisation measures while urging action on customs barriers.

Luke McEwen, Technical Director at Anemoi Marine Technologies. Anemoi and Lloyd’s Register call for unified approach to wind propulsion performance verification  

Anemoi Marine Technologies and Lloyd’s Register publish paper advocating alignment of verification methodologies.

Smyril Line's methanol-ready ro-ro following launch at its Longkou construction base in China in February 2026. Smyril Line's methanol-ready ro-ro launched in China  

First of two 3,300 lane-metre vessels floated out for Faroese operator.


↑  Back to Top