World's First Challenge Towards Sustainable Maritime Logistics
Ammonia-Fueled Engine Development Project

In the international shipping sector, reducing GHG (Greenhouse Gas) emissions from ships has become an urgent issue, and the practical application of engines using ammonia - a fuel that produces zero CO2 emissions - is expected to be a major step toward realizing a decarbonized society.
The MITSUI E&S Group has established "Realization of a Decarbonized Society" as one of its materiality themes, and as a leading company in marine propulsion systems, we are working on the development of ammonia-fired dual-fuel engines and systems including their peripheral equipment.

Track Record of Developing and Launching Marine Engines Compatible with New Fuels Ahead of Competitors

Since developing the world's first LNG-fired engine in 1994, MITSUI E&S has been developing dual-fuel engines compatible with various new fuels. We have established technology and supply systems that can respond to diverse needs, including LNG, ethane, LPG, and methanol. As of December 2024, the cumulative number of orders received is 75 units, and we have built a track record as a leading company in environmentally friendly engines.

Development History of Dual-Fuel Engines

Cumulative Orders for Dual-Fuel Engines

 (As of December 2024)

Challenges for Next-Generation Fuels Ammonia and Hydrogen

Ammonia and hydrogen, which do not emit CO2 during combustion, have recently attracted global attention as next-generation fuels. The practical application of engines using ammonia is a significant step towards achieving a decarbonized society. 
In February 2025, based on the results of single-cylinder ammonia fuel test runs conducted using a test engine of  Everllence,  we have started the world's first ammonia fuel test run on a large low-speed two-cycle commercial engine, at the Tamano Works.  We aim to complete the ammonia fuel engine to be delivered to customers in the first half of 2025.

Ammonia-Fired Dual-Fuel Engine 7S60ME-C10.5-LGIA-HPSCR External View

Toward Becoming  a Total Supplier Handling Ammonia Supply Equipment and Fuel Tanks

To realize ammonia vessels equipped with ammonia-fired engines requires not only engines, but also new fuel supply systems to supply ammonia to those engines and other new peripheral equipment. MITSUI E&S is also advancing the development of peripheral equipment together with our group company TGE Marine Gas Engineering GmbH (TGE).
By providing engines and peripheral equipment plus safety and security through remote monitoring systems, we are working toward becoming a total supplier of marine propulsion systems capable of supplying complete vessel propulsion system packages.

Role of MITSUI E&S

Fuel tanks, and fuel supply equipment