Site items in: Zero-carbon shipping

Onboard cracking, fuel storage and adhering to emissions standards: highlights from the MariNH3 conference
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At last month’s MariNH3 conference in Nottingham, a series of keynotes laid out the opportunities and challenges ahead for marine ammonia fuel. Onboard ammonia cracking technologies are moving through testing phases and closer to commercialisation, vessel designers are working through the unique challenges of carrying ammonia fuel onboard, and emissions mitigation technology (in combination with adherence to existing Tier 3 standards) will be necessary to ensure that ammonia-powered vessels are more environmentally-friendly than conventional counterparts.

Ammonia marine fuel supply systems: Wärtsilä and Amogy
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Wärtsilä Gas Solutions will now provide the ammonia fuel supply and cargo handling systems for all six of EXMAR’s dual-fuel vessels being built in South Korea. Meanwhile, Amogy and Mitsubishi have completed concept designs for two onboard systems: a powertrain combining ammonia cracking and hydrogen fuel cell for ships, and a hydrogen supply facility to provide hydrogen as pilot fuel to an ammonia-fueled engine.

Marine engines ordered, construction contracts signed
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WinGD’s X‑DF‑A dual-fuel engines have been ordered by Singapore-based shipping giant AET for deployment onboard new Aframax tankers, being built in China. Fishing vessels operators Vardin and Framherji have ordered Wärtsilä 25 engines for a series of three fishing trawlers that will operate in the Faroe Islands. In construction news, CMB.TECH will build the Yara Eyde vessel for Yara and North Sea Container Line in China, with vessel delivery scheduled for mid-2026.

Lloyd’s Register: vessel AiP and development updates
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Several ammonia-centric vessel designs were granted AiP at the recent Posidonia shipping exhibition in Greece. Lloyd’s Register approved designs including the world’s largest Very Large Ammonia Carrier, a container vessel and a gas carrier propelled by Amogy’s ammonia-to-power technology, a NOX-compliant container vessel featuring a MAN ammonia engine, and an ammonia-powered Very Large Ore Carrier. Lloyd’s Register also recently approved H2SITE’s onboard ammonia cracking technology.

Ammonia-fueled vessels: shipyard orders and new concepts
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Eastern Pacific Shipping’s on-order very large ammonia carriers (VLACs) will be registered in Singapore, thanks to a new partnership with the Maritime and Port Authority. Trafigura has announced the first of its ammonia-fueled, medium gas carriers will be delivered from South Korea in 2027. In Japan, K LINE and MAN are leading a 5-party collaboration to develop ammonia fueled-engines and deploy them in 200,000 dwt bulk carriers. We also explore ammonia-fueled Aframaxes in Malaysia, a concept study for a large-volume, coastal ammonia carrier in Japan, and a new salmon fishing vessel design in Norway.

Marine ammonia engines: working towards deployment in Japan
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MAN Energy Solutions has announced one of the first deployments of its ammonia two-stroke engine will take place in Japan. Mitsui E&S will construct the MAN B&W 7S60ME dual-fuel engine, with Imabari Shipbuilding to then install it aboard a Newcastlemax bulk carrier, along with an integrated SCR catalytic converter to treat engine NOX emissions. The news underscores significant momentum for the deployment of marine ammonia engines, with Wärtsilä, WinGD and Mitsubishi Shipbuilding also engaged in ongoing projects.