Tokyo: ClassNK has recently granted an Approval in Principle (AiP) for a gas carrier that runs on Ammonia fuel. This carrier has been collaboratively developed by TSUNEISHI SHIPBUILDING Co. Ltd., Mitsui O.S.K. Lines Ltd. and Mitsui E&S Shipbuilding Co. Ltd. The utilization of Ammonia as a ship fuel is a promising step towards decarbonization, as it does not produce CO₂ during combustion. However, given the toxicity of Ammonia to humans and its corrosive effects on materials, ensuring adequate safety measures is crucial.

According to reports, ClassNK has been actively involved in projects aimed towards the development of zero-emission ships using Ammonia fuel. As part of ClassNK's efforts to minimize risks associated with Ammonia-fuelled ships for the environment, crew, and vessels, the organization has issued its guidelines for ships running on alternative fuels. The guidelines detail requirements for the installation, controls, and safety devices necessary to ensure compliance with necessary standards.

In line with Part C of its guidelines, ClassNK has reviewed the jointly developed design of a medium-sized gas carrier that uses Ammonia cargo as fuel. As part of the review, ClassNK examined the risk assessment through HAZID and confirmed that the vessel complied with prescribed requirements. As a result, ClassNK issued the AiP, and the vessel aims to achieve net-zero CO₂ emissions while underway.

MOL, TSUNEISHI SHIPBUIDLING, and Mitsui E&S Shipbuilding have recognized the expected surge in demand for Ammonia as a marine fuel and transportation, thus pledging to contribute to the decarbonization movement by providing emission-free ocean transport solutions. As a certification entity, ClassNK takes pride in being part of this significant initiative, which aims to achieve zero CO₂ emissions while in transit. The Approval in Principle (AiP) serves as a remarkable milestone towards concrete efforts in reducing carbon emissions.