Mitsubishi Shipbuilding Receives Approval for Onboard Carbon Capture System

Mitsubishi Shipbuilding, a part of Japanese Mitsubishi Heavy Industries (MHI) Group, has acquired approval in principle (AiP) from compatriot classification society Nippon Kaiji Kyokai (ClassNK) for its onboard carbon capture and storage system (OCCS).

The OCCS captures, liquefies, and stores CO2 after pretreatment of the exhaust gas emitted from ships. This innovative system is a step towards reducing carbon emissions in the maritime industry.

Mitsubishi Shipbuilding developed the OCCS by utilizing CO2 capture technologies of MHI as core technology and combining it with exhaust gas pretreatment, CO2 liquefaction, storage, and handling technologies.

The company is committed to accelerating the development of the OCCS to bring it to market and contribute to the advancement of the maritime industries in Japan and around the world.

Other Developments

In addition to the OCCS, Mitsubishi Shipbuilding has made significant strides in sustainable shipping practices. In collaboration with Nippon Gas Line, the company obtained ClassNK’s AiP for a low-pressure type liquefied CO2 (LCO2) carrier for coastal transportation in 2025.

Furthermore, the shipbuilder recently secured orders for three methanol-powered roll-on/roll-off (RoRo) cargo ships from three compatriot shipping companies. These vessels will be constructed at the Enoura plant of MHI’s Shimonoseki Shipyard & Machinery Works in Yamaguchi prefecture and are scheduled for delivery from fiscal 2028.

With these initiatives, Mitsubishi Shipbuilding is paving the way for sustainable and environmentally friendly practices in the maritime industry, showcasing its commitment to innovation and sustainability.