ClassNK issues Approval in Principle (AiP) for Multiple Alternative Fuels Ready (Ammonia/Methanol/LNG) and OCCS Ready Bulk Carrier by Oshima Shipbuilding December 19, 2025 Fuel, International Shipping, Maritime, Ship Building, Shipping Line, Trending News TOKYO: ClassNK has issued approval in principle (AiP) for a concept design of the Multiple Alternative Fuels Ready (Ammonia/Methanol/LNG) and OCCS Ready Bulk Carrier developed by Oshima Shipbuilding Co., Ltd. The certification confirms the