Mitsui O.S.K. Line Starts Joint Development On Net Zero Emission Ammonia-fueled Ocean-Going Liquefied Gas Carrier

Mitsui O.S.K. Lines, Ltd. (MOL; President & CEO: Takeshi Hashimoto; Headquarters: Minatoku, Tokyo), Tsuneishi Shipbuilding Co., Ltd. (President: Sachio Okumura; Headquarters:

Fukuyama-shi, Hiroshima) and Mitsui E&S Shipbuilding Co., Ltd. (President: Isamu Funatsu; Headquarters: Chuo-ku, Tokyo) today announced the launch of a joint project aimed at developing and building an ocean-going liquefied gas carrier that will use ammonia as its main fuel.

The vessel is envisioned as a mid-size ammonia/LPG carrier equipped with a main engine that can run mainly on ammonia, and targeting to achieve net zero carbon dioxide (CO2) emissions while underway by using some of its ammonia cargo as fuel. This ship type is in the mainstream of ammonia carriers used for international maritime ammonia transportation, therefore, the vessel is able to call at major ammonia and LPG shipping and receiving ports around the world, meaning it can be used on a broad range of routes.

Ammonia-fueled Ocean-going Vessel. Image Credit: MOL

The three companies continue to move toward the joint development and design of the ship, and plans delivery and introduction of the vessel around 2026 as the first “net zero emission ocean-going vessel,” as stated in “MOL Group Environmental Vision 2.1.”

In line with trends toward decarbonization, worldwide interest in ammonia fuel—which emits no CO2 during combustion—is growing as a next-generation clean energy source. So the move to strategically use ammonia as fuel has been accelerating in the maritime industry as well.

The three companies will offer clean ocean transport solutions with net zero emission vessels and play a part in comprehensive efforts to realize a decarbonized society, while anticipating and responding to rising demand for ocean transport of ammonia.

Ammonia-fueled Ocean-going Vessel. Image Credit: MOL

[Outline of the vessel]
LOA: About 180m
Breadth: About 30m
Draft: About 19m
Cargo tank capacity: About 40,000m3
Main engine: MITSUI-MAN B&W type S60 two-stroke dual-fuel ammonia engine (under

[Outline of three companies]

Mitsui O.S.K. Lines, Ltd.
Established: May 1884
Address of headquarters: 2-1-1 Toranomon, Minato-ku, Tokyo
Representative: President & CEO: Takeshi Hashimoto
Business: Ocean shipping, etc.

Tsuneishi Shipbuilding Co., Ltd.
Established: January 2011 (Founded in July 1917)
Address of headquarters: 1083 Tsuneishi, Numakuma-cho, Fukuyama-shi, Hiroshima
Representative: President: Sachio Okumura
Business: Construction and repair of vessels

Mitsui E&S Shipbuilding Co., Ltd.
Established: April 2018 (Founded in November 1917)
Address of headquarters: 5-6-4 Tsukiji, Chuo-ku, Tokyo
Representative: President: Isamu Funatsu
Business: Ship Design & Engineering, Technical Consulting / Drawing Supply, Dispatch of
Engineer, Ship Digitalization, Sales of Dual Fuel Supply System, Brokerage Service, etc.

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