Japanese classification society ClassNK has awarded approval in principle (AIP) for a new ammonia-fueled tug being developed by local companies Nippon Yusen Kabushiki Kaisha (NYK) and IHI Power Systems.
For this AIP, NYK Line and IHI attempted a design to safely and practically install ammonia fuel-related equipment in a limited space on board by developing an ammonia fuel engine, selecting equipment, and devising the equipment layout in the design. As a result, the companies have achieved the design that address the indicated challenges without changing the size of a conventional tug.
The parties obtained the AIP after a prescribed examination by ClassNK. In the future, the companies will work toward the realisation of a demonstration operation at the Port of Yokohama in FY 2024 through further studies for construction.