Site items in: Zero-carbon shipping

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2025 is a critical year for the adoption of ammonia fuel in shipping. Here, we preview important upcoming meetings of the International Maritime Organization, what regulatory gaps are being filled by this work, potential candidates for decarbonization measures, and progress in engine development. All this sets the scene for incredible progress to be made in the coming years.

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Already in 2025, we have seen multiple initiatives launched and resources released to contribute to seafarer training ahead of the first ammonia-fueled vessels. Here, we explore the IMO’s first training guidelines, a new bunker training facility in India, and a safe procedures manual for ammonia bunkering developed by Copenhagen Infrastructure Partners.

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With commercial deployment scheduled to start this June, both WinGD and MAN ES’s under-development ammonia fueled engines have reported promising results across performance, ammonia safety and emissions optimisation parameters. MAN ES and MITSUI have also commenced a commercial-scale prototype test of the MITSUI-MAN ES large-bore, low-speed, two-stroke ammonia engine in Tamano, Japan.

Ammonia-powered timber shipping in Norway
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Starting in mid-2027, Norwegian timber exporter Viken AT Market will move part of its timber transport operations to a brand-new hybrid vessel that will run on electricity and ammonia fuel. Vessel developer Skarv Shipping has multiple ammonia-fueled vessels on order from Chinese shipyard Huanghai Shipbuilding.

Paving the way for ammonia as a marine fuel: insights into the IMO’s Interim Guidelines
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To explore the interim fuel guidelines and discuss their implications, we were joined by the IMO and Lloyd’s Register. Properly applied, the new fuel guidelines will ensure that ammonia systems achieve safety standards comparable to those of LNG or other alternative fuel systems, with special provisions made to ensure that ammonia’s hazards are effectively managed well within acceptable risk thresholds.

New green maritime corridor to link Portugal with northern Europe
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Madoqua and Mitsui O.S.K. Lines will lead development of the corridor. Industry partners in the consortium include financiers, terminal operators, Port authorities, alternative fuel producers and offtakers. The transportation of liquified CO2 along the corridor will help establish a supply chain for sequestration of carbon emissions in Norway at Horisont Energi’s Gismarvik CO2 hub.