Case study: Ammonia-Fueled Vessels

Driving Decarbonization Across Maritime Logistics

Ammonia is currently used primarily as a raw material for fertilizers, and its maritime transport volume remains limited. However, it is increasingly recognized as a clean energy source that generates no CO₂ emissions when combusted. Demand for ammonia is expected to grow as it finds new applications in power generation fuel transitions and as a hydrogen carrier. It is considered a promising solution for achieving carbon neutrality by 2050.

Mitsubishi Shipbuilding, a member of the Mitsubishi Heavy Industries (MHI) Group, is committed to decarbonizing maritime logistics by developing large-scale ammonia carriers. These vessels feature Mitsubishi Shipbuilding’s ammonia fuel supply system, MAmmoSS®, which enables the safe use of ammonia as a primary fuel and significantly improves operational efficiency. This design reduces greenhouse gas emissions from the vessel and increases transport efficiency with a larger capacity compared to conventional large LPG and ammonia carriers.

MHI Group is also developing a broad range of technologies to support the use of ammonia as fuel.Through these initiatives, we have established a strong portfolio of intellectual property, covering essential technologies such as specialized fuel supply systems and advanced safety functions for ammonia-fueled vessels.

Leveraging these capabilities, we deliver ammonia-fueled vessels tailored to customer requirements and provide integrated engineering solutions for onboard systems. These integrated systems include main engines, power generation units, boilers, and ammonia cracking units. By providing these solutions to partners worldwide, we are helping to advance maritime decarbonization, support the transition to a carbon-neutral society, and reduce environmental impact globally.