MOL Signs Deal to Build 2nd Bulk Carrier Equipped with 'Wind Challenger' Hard Sail System

Reducing Environmental Impact by Using Wind as Vessel's Propulsive Force

Tokyo - August 10, 2022







Mitsui O.S.K. Lines, Ltd. (MOL; President & CEO: Takeshi Hashimoto) today announced its intent to equip a second bulk carrier with the "Wind Challenger" (Note 1) hard sail system, which harnesses the power of wind to propel the vessel. MOL Group company MOL Drybulk Ltd. (President: Kazuhiko Kikuchi; Headquarters: Minato-ku, Tokyo) will operate the vessel, which will transport wood pellets for Enviva Inc. (Enviva) (Note 2), the world's leading producer of sustainable wood bioenergy, and has signed a construction contract for the new ship with Oshima Shipbuilding Co., Ltd. (President: Eiichi Hiraga; Headquarters: Saikai-shi, Nagasaki Prefecture). The vessel, slated for delivery in 2024, will be the second Wind Challenger-equipped vessel in the MOL Group fleet, following one scheduled to enter services in October of this year (Note 1).

MOL group is also examining the feasibility of adopting "Rotor Sails, (Note 3)" an auxiliary wind propulsion system developed by Anemoi Marine Technologies Ltd, of the U.K. Combined use of both the Wind Challenger and Rotor Sails is expected to reduce greenhouse gas (GHG) emissions by an average of 20%.

For years, Enviva and MOL have engaged in discussions to improve the efficiency of marine transportation through a contract for the shipping of wood pellets in Atlantic waters. In recent years, there has been a need to reduce the environmental impact of the entire supply chain. As we entered into a partnership in March 2021 with the aim of realizing an environmentally friendly bulk carrier, we have been considering the introduction of energy-saving technology and this is a culmination of our studies so far.

MOL Group clearly states that the group will make a concerted effort to achieve net zero GHG emissions by 2050, under "MOL Group Environmental Vision 2.1." It will further push forward adoption of energy-saving technologies using wind such as the Wind Challenger and Rotor Sails, to help reduce GHG emissions and realize a low- and de-carbonized society.

(Note 1) Wind Challenger
Concept video:
https://www.youtube.com/watch?v=UswVjqeSep8
The Wind Challenger is a telescoping hard sail that converts wind energy to propulsive force. Installation of one Wind Challenger sail on merchant ships has the potential to significantly reduce fuel consumption, which in turn reduces GHG emissions by about 5-8%. A bulk carrier for Tohoku Electric Power Co., Inc., the first vessel equipped with the Wind Challenger, is slated to be delivered in October 2022.


CG rendering of a bulk carrier equipped with the Wind Challenger and Rotor Sails. Image by MOL.

Please refer to the past related press releases.

October 3, 2019: "Wind Challenger" Design Acquires Preliminary Approval - Realizing Japan's 1st Large Cargo Ship with 'Sail', Aiming at Reduction of GHGs -

December 10, 2020: MOL, Tohoku Electric Power Sign Deal for Transport Using Coal Carrier Equipped with Hard Sail Wind Power Propulsion System (Wind Challenger)

February 1, 2022: Hard Sail Completed for 'Wind Challenger Project' and Installation Underway on Large-scale Vessel -Using Wind as Vessel Propulsive Force-

March 23, 2022: Introduction plan of Wind Challenger Installed Vessel Certified by Ministry of Land, Infrastructure, Transport and Tourism as "Introduction Plan of Vessel with Excellent Environmental Performance (Specific Vessel)"

(Note 2) Enviva
Enviva is the world's largest producer of industrial wood pellets, a renewable and sustainable energy source that is produced by aggregating a natural resource, wood fiber, and processing it into a transportable form, wood pellets. Enviva sells most of its wood pellets through long-term, take-or-pay off-take contracts with creditworthy customers in the United Kingdom, the European Union, and Japan, helping to accelerate the energy transition and to decarbonize hard-to-abate sectors like steel, cement, lime, chemicals, and aviation fuels.
Website : www.envivabiomass.com

(Note 3) Rotor Sails
The Rotor Sail produces propulsive force as the wind generates differential pressure around the slewing rotor while the vessel is underway. Because this thrust occurs at right angles against wind direction, winds from directions other than fore and aft can be always used for thrust, by changing the rotating direction of the rotor.

Please refer to the past related press releases.
November 2, 2021: MOL, Vale International Announce Joint Study on Use of Wind Propulsion System 'Rotor Sail' on Bulk Carrier - Adopting Wind as Clean Energy -

MOL Group 5 Sustainability Issues
MOL Group will contribute to realizing a sustainable society by promoting responses to sustainability issues, which are identified as social issues that must be addressed with priority through its business. We anticipate this initiative to contribute especially to the realization of "Environment - Conservation for marine and global environment-" and "Innovation - Innovation for development in marine technology-".

Mitsui O.S.K. Lines, Ltd. press release