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Friday, March 13, 2020 

Classification Society ClassNK has granted Approval in Principle (AiP) based on its Rule Part N - which adopts the IGC Code and its Guidelines for Ships Using Low-Flashpoint Fuels - to Daihatsu Diesel for a concept design of an LPG reformed gas fuelled coastal LPG carrier developed in cooperation with Iino Gas Transport, Osaka Gas, Izumi Steel Works, and Miura Shipbuilding in terms of safety assessments.

The Vessel is designed to be equipped with an LPG reformer developed jointly by Daihatsu Diesel and Osaka Gas, and a dual fuel engine developed by Daihatsu Diesel. The LPG Reformer is designed to convert LPG into synthetic methane gas equivalent to the kind found in LNG. Due to being mainly composed of propane and butane, LPG is susceptible to knocking (abnormal combustion), making it difficult to use as a fuel for lean burn gas engines and dual fuel engines. Converting LPG into synthetic methane gas with the LPG Reformer prior to fuelling the engine, can restrain the risks of knocking. Operational performance of the engine is expected to be equivalent to that observed when using LNG as fuel.

ClassNK Senior EVP T. Shigemi said: “We have cautiously confirmed the design’s safety and are proud to be involved with this project. LPG is starting to become an option in the maritime industry and we have high expectations for the possible benefits that its use may bring in terms of environmental safety and efficiency.”

Daihatsu Diesel President S. Kinoshita said: "We have developed dual-fuel engines from the view point of global warming prevention, and this LPG reformer will provide more options for customers. We would like to make further efforts toward a zero carbon society. I thank ClassNK and our partners for their efforts and cooperation in making the concept design and safety assessment."

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