Ammonia

NUS launches project to develop near-zero-emissions ammonia marine engines

Project focuses on a novel in-cylinder reforming gas recirculation engine concept designed to address key limitations that have so far constrained the wider adoption of ammonia as a marine fuel.

Published

4 months ago

February 10, 2026

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NUS launches project to develop near-zero-emissions ammonia marine engines

The National University of Singapore (NUS) on Friday (6 February) said a major new research project, to be located on the College of Design and Engineering (CDE) campus, has been launched to accelerate the decarbonisation of the global shipping industry through the development of next-generation ammonia-fuelled marine engines with high efficiency and near-zero emissions.

The project is led by the NUS Centre for Hydrogen Innovations (CHI) with funding support from the Singapore Maritime Institute (SMI), in collaboration with leading academic and industry partners in Singapore and overseas.

The project focuses on a novel in-cylinder reforming gas recirculation (IRGR) engine concept designed to address key limitations that have so far constrained the wider adoption of ammonia as a marine fuel.

“Ammonia has been recognised as one of the most promising fuels for achieving near-zero greenhouse gas emissions in marine transportation, but current ammonia engines face significant challenges in efficiency and emissions,” said Associate Professor Yang Wenming from the Department of Mechanical Engineering at NUS, who leads the project as Principal Investigator.

“The IRGR concept is designed to address these limitations by improving combustion efficiency while sharply reducing unburned ammonia and other pollutants.”

“The project will be based in a dedicated laboratory on the CDE campus, featuring an engine test room, control room and facilities for fundamental combustion and systems research,” said Dr Zhou Xinyi, Senior Research Fellow from the Department of Mechanical Engineering.

Beyond technical development, the initiative also aims to strengthen Singapore’s position as a hub for maritime innovation and sustainable shipping technologies by anchoring advanced engine research within a broader ecosystem of industry collaboration and talent development.

Professor Silvija Gradecak, Vice Dean (Research and Technology) at CDE, described the IRGR Ammonia Engine Project as an important milestone for efforts to decarbonise the maritime sector.

“Marine transportation is central to global trade, yet it remains one of the most challenging sectors to decarbonise,” she said.

“Through this project, the team aims to develop and demonstrate the world’s first prototype engine based on the IRGR concept, paving the way for the practical adoption of ammonia as a marine fuel.”

Global shipping currently accounts for approximately 3 per cent of global carbon emissions, and the sector faces increasing pressure to reduce its environmental impact in line with international net-zero targets. While ammonia does not produce carbon dioxide at the point of combustion and is easier to store and transport than hydrogen, challenges related to thermal efficiency, combustion stability and pollutant emissions remain critical barriers to commercial deployment.

“The International Maritime Organization’s net-zero emissions target must be achieved by 2050, and the time left is very short,” said Professor Li Tie from Shanghai Jiao Tong University, a key academic partner in the project.

“This goal cannot be realised by any single institution or country. It requires disruptive technologies and strong international cooperation, and the IRGR project reflects exactly that kind of collaboration.”

The consortium includes partners from Shanghai Jiao Tong University, Nanyang Technological University, the A*STAR National Metrology Centre and Keppel Energy Nexus, alongside industry partners Daihatsu, a leading global marine engine manufacturer, and the American Bureau of Shipping (ABS). Their involvement is intended to ensure the research remains grounded in practical engineering requirements, safety considerations, certification pathways and commercial relevance.

The launch event at NUS was attended by senior representatives from the government, industry and academia, including leaders from SMI and the Maritime and Port Authority of Singapore, as well as the President of Daihatsu Infinearth Mr Yoshinobu Hotta, and ABS Vice President of Technology (Pacific) Dr Gu Hai. The event also included the formal signing of research collaboration agreements between NUS and Daihatsu, and between NUS and ABS.

The project is expected to run for three years, with the research team working towards scalable engine concepts that could support the future deployment of low- and zero-emissions vessels worldwide.

Photo credit: National University of Singapore
Published: 10 February, 2026

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Ammonia

AM Green plans to build green ammonia plant at Indian port

Initiative also includes development of green ammonia handling, storage and bunkering infrastructure, pilot bunkering operations, safety procedures and training programmes, says VOC Port Authority.

Published

17 hours ago

June 3, 2026

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VO Chidambaranar (VOC) Port Authority on Friday (29 May) said it has signed a Memorandum of Understanding (MoU) with India’s ammonia producer AM Green Ammonia to collaborate in the development of a green ammonia production plant.

The plant will have a capacity of one million tonnes per annum (MTPA) at Tuticorin.

The initiative also includes development of green ammonia handling, storage and bunkering infrastructure, pilot bunkering operations, safety procedures and training programmes.

The project is expected to support the development of green fuel corridors connecting VOC Port with major ports in Europe and Asia, thereby strengthening India’s position in the global green fuels value chain.

VOC Port also signed a Memorandum of Understanding (MoU) with Bureau Veritas (India) Pvt. Ltd., to collaborate on Green Port certification, emissions accounting, ESG reporting, safety validation, development of green bunkering practices, and establishment of a Centre of Excellence for green fuels and sustainability.

The port also plans for an upcoming 750 m³ green methanol bunkering facility.

Photo credit: Naveed Ahmed on Unsplash
Published: 3 June, 2026

Alternative Fuels

DNV on IMO MSC 111: Interim guidelines for using hydrogen, ammonia as marine fuels approved

Highlights of IMO’s MSC 111 include approved interim guidelines for ships using hydrogen and ammonia cargo as fuels as well as endorsed work plans to address regulatory safety barriers to alternative fuels.

Published

1 week ago

May 26, 2026

Admin

Classification society DNV on Saturday (2 May) released technical and regulatory news on the highlights of IMO’s MSC 111 including approved interim guidelines for ships using hydrogen and ammonia cargo as marine fuels as well as endorsed work plans to address regulatory safety barriers to alternative fuels and new technologies.

The following are excerpts of the article:

The 111th session of the Maritime Safety Committee (MSC 111) was held from 13 to 22 May 2026. The adoption of a new goal-based Code for Maritime Autonomous Surface Ships (MASS) marks a key milestone in the IMO’s work to ensure that the regulatory framework keeps pace with the rapid development of shipping technologies. MSC 111 also approved revised Explanatory Notes for the Safe Return to Port concept for passenger ships, as well as draft amendments to the IGC Code for gas carriers to incorporate a decade of Unified Interpretations, turning operational experience into clearer and more consistent requirements.

Training for seafarers on alternative fuels and new technologies

MSC 111 approved new “Interim guidelines on training for seafarers on ships using methyl/ethyl alcohol as fuel”, as well as new “Interim guidelines on training for seafarers on ships using amm onia as fuel”.

The fuel-specific guidelines support the generic “Interim guidelines on training for seafarers on ships using alternative fuels and new technologies to support the reduction of GHG emissions from international shipping” (STCW. 7/Circ.25),which were approved by MSC 110 in 2025.

MSC 111 further endorsed the work plan for the further development of training provisions for seafarers on ships using alternative fuels and new technologies.

Ships using hydrogen as fuel

MSC 111 approved “Interim using hydrogen as fuel” guidelines for the safety of ships

Ships using ammonia cargo as fuel

MSC 111 approved “Interim guidelines for use of ammonia cargo as fuel on gas carriers”. These guidelines aim to support the safe handling of ammonia as fuel, with main focus on areas outside the cargo areas to ensure safety for the crew and ship.

IGC Code – ships carrying gases or low flashpoint fuels

MSC 111 approved draft amendments to the IGC Code to incorporate the large number of Unified Interpretations (UIs) developed since the latest major review of the code, which entered into force in 2016. The primary objective of the draft amendments is to remove ambiguity and promote the consistent implementation of the IGC Code requirements.

The draft amendments to the IGC Code are expected to enter into force on 1 July 2028, subject to adoption by MSC 112 (December 2026).

The draft amendments to the IGC Code will apply to ships constructed on or after 1 July 2028, i.e. ships:

for which the building contract is placed on or after 1 July 2028; or in the absence of a building contract, the keels of which are laid or which are at a similar stage of construction on or after 1 January 2029; or the delivery of which is on or after 1 July 2032.

Draft amendments to the model form of the International Certificate of Fitness for the Carriage of Liquefied Gases in Bulk in Appendix 2 of the IGC Code were approved to reflect the three-date application provision.

The following MSC Circulars, containing UIs to the IGC Code, are expected to be suspended upon adoption and entry into force of the IGC Code amendments:

MSC.1/Circ.1543, MSC.1/Circ.1559, MSC.1/Circ.1590,
MSC.1/Circ.1606, MSC.1/Circ.1617, MSC.1/Circ.1625,
MSC.1/Circ.1651, MSC.1/Circ.1669 and MSC.1/Circ.1679.

Note: The full article can be found here.

Photo credit: Venti Views on Unsplash
Published: 26 May, 2026

Ammonia

Singapore authorises ITOCHU subsidiary to conduct ammonia bunkering trials

ITOCHU plans to conduct demonstration trials in collaboration with MOL, supplying ammonia fuel to dual-fuel Capesize bulkers within the port of Singapore during the last quarter of 2027.

Published

2 weeks ago

May 22, 2026

Admin

ITOCHU orders world’s first ammonia bunkering vessel for Singapore demonstration project

ITOCHU Corporation (ITOCHU) on Wednesday (20 May) announced that the Maritime and Port Authority of Singapore (MPA) has granted authorisation to ZETA Bunkering Pte Ltd (ZETA), a wholly owned subsidiary of ITOCHU, to conduct ammonia bunkering trials in Singapore.

The authorisation was granted following MPA’s review of ZETA’s submissions, which included comprehensive safety studies, risk assessments, and business plans for ammonia bunkering in Singapore.

The ammonia bunkering trials to be conducted under this authorisation will serve to verify the technical readiness, operational protocols, infrastructure, and technologies, to assess and inform the development of safe and environmentally sustainable ammonia bunkering practices in Singapore. The authorisation was issued on 27 April and will become effective on 15 May for a trial period up to two years subject to MPA’s prevailing regulatory framework.

In June 2025, as part of ITOCHU’s integrated project for developing and owning of ammonia-fuelled vessels and the establishment of a global supply chain for ammonia as marine fuel, ITOCHU placed an order for the world’s first newbuilding ammonia bunker vessel, through Clean Ammonia Bunkering Shipping Pte Ltd, a wholly owned subsidiary of ITOCHU. The vessel is being constructed by Sasaki Shipbuilding, will be flagged under the Singapore Registry of Shipping and is expected to be delivered in September 2027.

The authorisation will accelerate ITOCHU’s initiatives to decarbonise international shipping. Specifically, ITOCHU plans to conduct demonstration trials in collaboration with Mitsui O.S.K. Lines, Ltd. (MOL), supplying ammonia fuel from the ammonia bunker vessel to dual-fuel Capesize bulkers, jointly owned by CMB.TECH NV (Belgium) and MOL, and chartered by MOL, within the port of Singapore during the last quarter of 2027, subject to the relevant regulatory approvals.

Through these demonstrations and subsequent ammonia bunkering trial operations under the authorisation, ITOCHU will work closely with MPA and other maritime stakeholders to develop infrastructure, technologies, and operational standards for ammonia bunkering that prioritise safety and environmental sustainability. ITOCHU will also formulate detailed implementation plans, conduct risk assessments, and establish emergency response measures, ensuring that safety and environmental protection remain paramount.

These trials will enable ITOCHU to establish safe and sustainable ship-to-ship bunkering operations using ammonia as marine fuel, with the aim of commercialising the ammonia bunkering business in Singapore and at major maritime hubs worldwide.

Photo credit: ITOCHU Corporation
Published: 22 May, 2026