ClassNK to class ammonia-fueled tugboat ‘Sakigake’- World’s first ammonia-fueled vessel for commercial use – August 24, 2024 International Shipping, Maritime, Shipping Line, Trending News TOKYO : ClassNK has classed the ammonia-fueled tugboat ‘Sakigake’ completed by Nippon Yusen Kabushiki Kaisha (NYK Line) and IHI Power Systems Co., Ltd. as an ammonia-fueled vessel. This is the world’s first ammonia-fueled vessel