ClassNK issues approval in principle (AiP) for hydrogen-fueled vessel October 20, 2023 International Shipping, Maritime, Shipping Line, Trending News TOKYO : ClassNK has issued an Approval in Principle (AiP) for a parcel layout concept for a hydrogen-fueled multi-purpose vessel developed by Mitsui O.S.K. Lines, Ltd. (MOL), MOL Drybulk Ltd. (MOL Drybulk), Onomichi Dockyard
