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Mitsubishi Shipbuilding Co., Ltd., a part of Mitsubishi Heavy Industries (MHI) Group, has finalised the basic design for an ammonia fuel supply system for the X-DF-A engine, an ammonia-fueled large, low-speed two-stroke marine engine currently under development by WinGD, a Swiss designer and licensor of large marine engines.

Mitsubishi Shipbuilding will continue to conduct technical studies with WinGD aimed at commercialisation of the system.

Undertaking technical studies

Mitsubishi Shipbuilding and WinGD concluded a Memorandum of Understanding (MOU) in June 2023 to undertake technical studies on an ammonia fuel supply system (Note), with the aim of contributing to the achievement of a new target set by the International Maritime Organization (IMO) of net zero greenhouse gas (GHG) emissions in the maritime industry by or around 2050.

Mitsubishi Shipbuilding and WinGD concluded a Memorandum of Understanding (MOU) in June 2023

The technical studies conducted by the two companies led to the finalisation of a basic design for an ammonia fuel supply system for engines under development by WinGD. Because ammonia emits no CO2 when combusted, it has attracted attention as a fuel with the potential to contribute significantly to reducing GHG emissions in the maritime industry, and it is expected to be utilised in the future as a source of stable, clean energy.

Marine ammonia handling systems

Mitsubishi Shipbuilding is continuing to develop marine ammonia handling systems, such as fuel supply systems and ammonia gas abatement systems for a wide range of ammonia fuel combustion systems, including the X-DF-A engine.

In addition, by proposing ammonia-fuelled vessels in conjunction with design and engineering for onboard plants comprising multiple ammonia-fueled combustion systems, such as main engines, power generation engines, and boilers, Mitsubishi Shipbuilding will promote the decarbonisation of the maritime industry, realise a carbon-neutral society, and contribute to the reduction of environmental impacts on a global scale.

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