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Mitsubishi Shipbuilding receives Approval in Principle (AiP) from ClassNK for its Onboard Carbon Capture and Storage (OCCS) system, designed to capture and store CO₂ emitted by ships.
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OCCS captures, liquefies, and stores CO₂, utilizing MHI Group’s proven onshore CO₂ capture technologies adapted for marine applications.
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The system supports the decarbonization of ships, an increasingly critical objective in the global maritime industry.
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Mitsubishi Shipbuilding accelerates development to bring the OCCS system to market, reinforcing its commitment to energy transition and sustainable maritime practices.
Tokyo, April 10, 2025 – Mitsubishi Shipbuilding Co., Ltd., a subsidiary of the Mitsubishi Heavy Industries (MHI) Group, has successfully obtained Approval in Principle (AiP) from Nippon Kaiji Kyokai (ClassNK) for its Onboard Carbon Capture and Storage (OCCS) system. The system is designed to capture, liquefy, and store CO₂ emissions produced by ships, contributing to global decarbonization efforts in the maritime sector.
Adapting Onshore CO₂ Technologies for Marine Use
The OCCS system, which is generating attention within the industry, utilizes MHI’s expertise in CO₂ capture technologies developed for onshore applications. By integrating exhaust gas pretreatment, CO₂ liquefaction, and storage technologies, Mitsubishi Shipbuilding has effectively adapted these technologies for onboard use. The system is positioned as a viable solution for reducing greenhouse gas (GHG) emissions in ships, supporting global sustainability targets.
Fostering Decarbonization in the Shipping Industry
As part of MHI Group’s energy transition strategy, Mitsubishi Shipbuilding is committed to contributing to the decarbonization of the maritime industry. The group aims to leverage its marine engineering capabilities and expertise in shipbuilding to further advance this technology and bring it to market.
Commitment to Global Maritime Sustainability
With the rising urgency for emission reductions in the shipping sector, Mitsubishi Shipbuilding plans to continue accelerating the development of the OCCS system. This system aims to play a vital role in mitigating the environmental impact of ships and assisting the maritime industry in meeting regulatory and environmental standards.
Through this initiative, Mitsubishi Shipbuilding underscores its dedication to global efforts in reducing GHG emissions, helping the shipping industry move toward a more sustainable future.
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Source: Mitsubishi Heavy Industries
