MOL receives AiP for NH3-fuelled gas carrier design

The design is intended to achieve net zero CO2 emissions while underway. The design includes a MITSUI-MAN B&W type S60 two-stroke dual-fuel ammonia engine as the main mover. The engine itself remains under development.  

Ammonia is expected to be used as a ship fuel for decarbonisation since it does not emit CO2 when combusted. Meanwhile, adequate safety measures are imperative as it has been pointed out that ammonia is toxic to humans and corrosive to materials. ClassNK has been involved in projects aiming for zero-emission ships using ammonia fuel in terms of safety assessment, and has issued its “Guidelines for Ships Using Alternative Fuels” as a necessary standard to minimize the risks related to ammonia fuelled ships for the ships, crews, and environment by stipulating requirements for installation, controls, and safety devices. 

ClassNK carried out the review on jointly developed design of the ammonia fuelled medium size gas carrier in line with Part C of its guidelines, and examing the risk assessment through HAZID. Upon cofirming it complies with the prescribed requirements, ClassNK issued the AiP. 

Ken Furuya, Executive Officer, General Manager of Sales Dept., Mitsui E&S Shipbuilding said, ”We, Mitsui O.S.K. Lines, TSUNEISHI SHIPBUILDING and Mitsui E&S shipbuilding, would like to express our appreciation to ClassNK and Lloyd’s Register for the support and cooperation to this joint development project. This AiP is an important mile stone for us. We will continue to make an effort to complete this project successfully. Anticipating an increase in the need for ammonia as a marine fuel and greater demand for transporting it, the three companies are committed to playing a role in society’s overall decarbonization efforts by providing clean ocean transport solutions with the zero emission ocean-going vessels.”