Japan Engine Corporation (J-ENG) on Monday (21 April) said the first Japanese-developed and manufactured commercial full-scale, low-speed, ammonia-fuelled two-stroke engine has started co-firing operation with ammonia, which will be installed in a vessel. 

J-ENG is developing the engine under the “Green Innovation Fund Project: Next-generation Ship Development” of the New Energy and Industrial Technology Development Organization (NEDO). 

Since May 2023, when J-ENG started the world's first ammonia co-firing operation of a large, low-speed, two-stroke engine in a test engine, J-ENG has obtained many results and knowledge, including stable operation at high ammonia co-firing rates and safe handling of ammonia, through various test operations over a period of about a year and a half. 

J-ENG will conduct verification operations on the full-scale engine and plans to ship the engine in October of this year. The engine will be installed on an Ammonia-fuelled Medium Gas Carrier (AFMGC) and then demonstration operations of the vessel will be carried out then.

In order to accommodate a wide variety of ammonia-fueled vessels, J-ENG is also concurrently developing an ammonia-fueled engine with a cylinder bore of 60cm, following the first engine with a 50cm cylinder bore mentioned above, for several promising follow-on projects.

Furthermore, after achieving the development and social implementation of these engines, the company has decided to construct a new plant with the support of a subsidy project by the Ministry of the Environment and the Ministry of Land, Infrastructure, Transport and Tourism through the GX Economic Transition Bonds. 

The new plant, which is scheduled for completion in 2028, will expand the production of ammonia fuel engines (in the product mix with fuel oil engines) and promote the spread and expansion of zero-emission ships.

“J-ENG, as a first mover of next-generation fuel engines, will contribute to the development of the Japanese shipping and shipbuilding industries through the early launch and expansion of these engines, and at the same time, contribute to the reduction of greenhouse gases (GHG) in international shipping and the achievement of carbon neutrality by 2050,” the company said on its website.

Photo credit: Japan Engine Corporation
Published: 23 April, 2025

Tsuneishi Shipbuilding on Tuesday (22 April) said its shipyard in China successfully completed the first block loading for its first 5,900TEU methanol-fuelled containership, which is the largest of this ship type built by the company, on 16 April.

In addition to the enhanced hull form and MT-FAST, the company’s innovative energy-saving technology, the integration of a large-capacity shaft generator has enabled this dual-fuel vessel to achieve both optimal loading performance and exceptional fuel economy when compared with fuel oil vessels in the same segment. 

MT-FAST is an energy-saving device that improves propulsion efficiency by approximately 4% by regulating water flow through the installation of multiple fins in front of the propeller. It was developed jointly with MTI of the NYK Group.

The vessel has been developed based on the concept of a final solution for the zero CO₂ emission vessel through the use of green methanol. Therefore, not only the main engine but also all on-board generators, HiMSEN engine which will be supplied by HD Hyundai, can be methanol-fuelled. 

This makes it possible to achieve carbon neutrality with the exception of a small amount of pilot fuel. Furthermore, the vessel is equipped with the necessary infrastructure to receive large-capacity alternative maritime power supplies. 

“In addition, the generators can be deactivated during anchorage, thereby achieving zero CO₂ emissions. We will continue to promote the further practical application of methanol-fuelled vessels with the aim of achieving carbon neutrality in the future,” the company said.

Additionally, the Japan-based shipbuilder said its yard in the Philippines has successfully completed the first block loading for its first methanol dual-fuelled Kamsarmax bulk carrier on 21 April at THI Slipway No.2 . 

The vessel is scheduled to be launched in July 2025 and delivered in January 2026.

It is the first methanol-fuelled vessel in the Kamsarmax series, a long-standing series of vessels built by Tsuneishi Shipbuilding, which reached the 400-vessel milestone in July 2024.

By using methanol for propulsion, Tsuneishi Shipbuilding said the vessel reduces carbon dioxide emissions by 10%, nitrogen oxide emissions by 80% and sulphur oxide emissions by 99% during voyages compared to conventional models. 

Photo credit: Tsuneishi Shipbuilding
Published: 23 April, 2025

Mitsui OSK Lines (MOL) on Friday (18 April) said the naming and delivery ceremony for the LNG-fuelled Capesize bulker, which MOL ordered for JFE Steel Corporation, was held at the Saijo Shipyard of Imabari Shipbuilding. 

The vessel was named the Verde Heraldo, which means “Green Pioneer” in Spanish, by JFE Steel President and CEO Masayuki Hirose. MOL executives including President & CEO Hashimoto were also on hand for the ceremony.

After departing from Saijo Shipyard, LNG fuel will be supplied directly to the vessel through shore-to-ship bunkering at the Senboku Terminal of Osaka Gas, and is then scheduled to sail for Australia.

The Verde Heraldo will sail under long-term transport contracts to supply raw materials for JFE Steel's mills, providing both reduced environmental impact and safe and reliable marine transport services.

About Verde Heraldo

LOA: 299.99 m
Breadth: 50.00 m
Draft: 18.436 m
Deadweight tonnage: 210,321 tonnes
Shipyards: Imabari Shipbuilding and Nihon Shipyard 

Photo credit: Mitsui OSK Lines
Published: 22 April, 2025