TOKYO—Mitsui O.S.K. Lines, Ltd. (MOL; President & CEO: Takeshi Hashimoto; Headquarters: Minato-ku, Tokyo), together with Ouchi Ocean Consultant, Inc., the National Maritime Research Institute (NMRI) of National Institute of Maritime, Port, and Aviation Technology (MPAT), Smart Design Co., Ltd., Graduate School of Frontier Sciences of The University of Tokyo, West Japan Fluid Engineering Laboratory Co., Ltd., Nippon Kaiji Kyokai (ClassNK), and Mirai Ene Planning LLC, have been promoting zero-emission business utilizing wind power and hydrogen “Wind Hunter Project” (hereinafter referred to as the “Project”)since last November(Note 1). Recently the Project successfully conducted a demonstration experiment using the yacht “WINZMARU” in Sasebo-city, Nagasaki in Japan


“WINZ MARU” sailing Omura Bay in Nagasaki

(If you click on the image above, you can see the video of the test sailing.)


Left: Power generation turbine (back) and propeller (front);

Center: Inside of the hydrogen equipment room;

Right: A stern wake while propelling by a hydrogen fuel cell with the sail lowered


During strong wind(red arrows in the image below), the yachts wind power to generate electricity using an underwater turbine to produce and store hydrogen on board. During weak wind(blue arrows), the stored hydrogen is used in dihydrogen fuel cells to generate electricity to rotate a propeller.(Fig.1)


Five experimental sailings have been conducted as of November 242021and a series of cycles have been successfully demonstrated: (1) power generation by ocean wind → (2) hydrogen production → (3) hydrogen storage → (4) fuel cell power generation→ (5) propulsion by the electric propeller. At forthcoming full-scale sailing, we will accumulate and analyze navigation data in order to verify the actual performance characteristics of various equipment and the efficiency of the yacht(plant) itself and we aim to complete the demonstration experiment (Stage 1) by March 2022. As a future roadmap, we aim to create a larger scale, about 60 meters long vessel, by 2024 (Stage 2). Furthermore, we plan to develop and build many large-scale zero-emission vessels by 2030 (Stage 3).


(Fig. 1)Cycle of power generation → hydrogen production → hydrogen storage → fuel cell power generation → propulsion

MOL Group aims to achieve net-zero GHG emissions by 2050, as set out in the “MOL Group Environmental Vision 2.1″(Note2).


MOL will contribute to the reduction of GHG emissions and the realization of a low-carbon society by actively participating not only in the reduction of GHG emissions from MOL-operated vessels but also in the construction of clean energy supply chains, including this project.(Fig.2)


(Note 1) November30, 2020 press release:

“Wind Hunter Project” Starts -Zero-Emission Project with Wind Propulsion and Hydrogen-

(Note 2) MOL Group Environmental Vision 2.1

For further information, please contact: Media Relations Team, Corporate Communication Division Mitsui O.S.K. Lines, Ltd.TEL: 03-3587-7015/FAX: 03-3587-7705/Email: