MOL, Mitsui acquire approval for ammonia-powered carrier

Mitsui & Co. and Mitsui O.S.K. Lines (MOL) have received approval in principle (AiP) from Japanese classification society ClassNK for the design of a large ammonia-powered bulk carrier, the companies said on January 27.

Mitsui and MOL jointly determined the size and specifications of the vessel, and both companies entrusted Mitsubishi Shipbuilding Co. for design of the vessel. The AiP covers a 210,000 dwt capesize bulker.

The design calls for a main engine fuelled by ammonia, which emits no CO₂ when burned, thereby achieving zero CO2 emissions during the voyage, the companies said.

The vessel will also feature two ammonia fuel tanks on deck to maximise the cruising range for various routes and to make effective use of cargo space. Furthermore, ClassNK is scheduled to conduct a risk assessment to confirm that no unacceptable risks exist at the basic design stage and to identify items to be considered in the detailed design, which will incorporate safety measures fully taking into account the toxicity of ammonia, and other factors.

Mitsui and MOL said they will promote the expansion of net-zero emission ocean-going vessels and play a role in society's overall efforts to achieve decarbonisation.