Class certifies ammonia marine safety room

The ammonia-fuelled vessel is currently being developed by a consortium that includes NYK and Nihon Shipyard Co., Ltd. (NSY).

MRS is Class notation demonstrating a ship is equipped with excellent ammonia safety measures for the machinery room. MRS also confirms the vessel meets the highest safety measures under the guidelines for ammonia-fuelled ships.
 
The consortium to which NYK and NSY belong is aiming for AFMGC delivery by the end of November 2026. The 40,000 cu metre vessel is being built by Japan Marine United Corporation’s Ariake Shipyard with planned delivery date in November 2026.

 The vessel development is under the Green Innovation Fund Project by Japan’s New Energy and Industrial Technology Development Organisation (NEDO).

It is essential to have toxicity measures to keep the crew safe, such as a design to avoid ammonia leakage from piping and tanks. To overcome toxicity, the consortium has conducted a risk assessment reviewed by ClassNK, risk assessments and safety measures from a user’s point of view led by NYK’s engineers, and a study of the ship’s specifications to realise the world’s highest level of safety.
 
The minimum design requirements for using ammonia safely on board are regulated in the ammonia-fuelled ship guidelines issued by ClassNK.

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