MOL, Namura, Mitsubishi secure AiP for ammonia-powered carrier

MITSUI O.S.K. Lines (MOL), Namura Shipbuilding, and Mitsubishi Shipbuilding have received approval in principle (AiP) from Nippon Kaiji Kyokai (ClassNK) for their jointly developed large ammonia-powered ammonia carrier.

AiP certification confirms the feasibility of new designs that lack existing regulatory frameworks. It validates the ship's technical and safety aspects, allowing further development.

The vessel, which has been under development since 2021, is designed to support the growing use of ammonia as a zero-carbon fuel and hydrogen carrier. It has larger cargo tanks than very large gas carriers (VLGCs) and very large ammonia carriers (VLACs), allowing for higher transport capacity while maintaining compatibility with existing power plant infrastructure and ammonia supply terminals in Japan.

ClassNK's approval follows a hazard identification study (HAZID) assessing safety measures for handling ammonia's toxicity. The findings were incorporated into the vessel's basic design to ensure compliance with safety and environmental standards. With AiP secured, the project moves toward finalizing its detailed design.

MOL Group aims to achieve net-zero greenhouse gas (GHG) emissions by 2050, in line with its BLUE ACTION 2035 and MOL Group Environmental Vision 2.2. The company is integrating clean energy solutions and alternative fuels to support a low-carbon maritime industry.

The collaboration between MOL, Namura and Mitsubishi Shipbuilding focuses on developing vessels that meet evolving environmental and industry requirements.