NYK commences conversion to Ammonia Fuel for Pioneering Tugboat November 1, 2023 International Shipping, Fuel, LNG, Shipping Line, Trending News Commencing modification to sail the World’s first ammonia-fueled vessel TOKYO : NYK has commenced conversion of the liquefied natural gas (LNG) fueled tugboat Sakigake to an ammonia-fueled tugboat at the Oppama factory of Keihin