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.


Two vessels at sea. Abrasive reality: How elevated cat fines can damage marine engines | VPS  

A guide on how to manage cat fine levels and avoid engine damage.

EU share of world fleet graphic. European shipowners control 34.5% of global fleet but lag on sustainable fuel production  

New study highlights Europe’s shipping dominance while warning of Asia’s lead in alternative fuel development.

O Bunkering Board of Directors graphic. O Bunkering announces new board of directors following merger  

Marine fuel supplier forms board to guide strategic direction and governance after recent merger.

Clean ammonia project pipeline chart as of April 2026. Clean ammonia project pipeline reaches 144 MMT by 2034 as industry advances  

Gena Solutions tracks 327 clean ammonia projects, with four reaching development milestones in April.

O Bunkering and Marafi Services merger ceremony. O Bunkering and Marafi Services announce merger  

Omani firms join forces to accelerate growth and improve operational efficiency.

Order ceremony for LNG dual-fuel container vessels. OOCL orders twelve 13,600-teu LNG dual-fuel container vessels from Chinese shipbuilder  

Hong Kong-based carrier’s first LNG-powered vessels mark entry into alternative fuel segment.

Lucia Cosulich vessel. Cosulich launches second methanol-ready bunker vessel at Chinese shipyard  

Lucia Cosulich is the second of four sister vessels being built for alternative fuel bunkering.

LNG bunkering vessel render. Wärtsilä Gas Solutions secures order for LNG systems on four bunkering vessels  

GSX Energy orders systems for vessels being built at Chinese shipyard Nantong CIMC Sinopacific.

Guo Si ship-to-ship (STS) bunkering operation. Chimbusco Pan Nation delivers 2,500 mt of B100 biodiesel in China’s largest single bunkering  

Hong Kong operation claims 89% greenhouse gas emissions reduction compared with conventional marine fuel.

Caroline Yang, Diana Mok and Francois-Xavier Accard, IBIA. IBIA appoints three new members to Asia regional board  

Caroline Yang, Diana Mok and Francois-Xavier Accard join the board following unanimous approval.