DNV confirms Carbon Ridge’s centrifugal OCCS system reaches peak CO2 capture rate of 98% in International Shipping News 05/06/2026 An assessment from global classification society DNV, using its Recommended Practice for performance verification of onboard carbon capture and storage (OCCS), has confirmed Carbon Ridge’s centrifugal onboard carbon capture system can reach CO2 capture rates of as high as 98%. This is the first maritime deployment of a centrifugal OOCS system, which during the testing was set up to capture and treat a part of the emissions stream generated by a LR2 product tanker owned by Scorpio Tankers Inc. The results were reached using data gathered over a scheduled five-month pilot period, which commenced in July 2025 at Besiktas Shipyard in Turkey, on the 109,999 dwt, 2015-built STI Spiga as the vessel undertook regular commercial operations. DNV reviewed and validated the associated methodologies, calculations, and reported performance metrics and based on the data provided was able to corroborate peak CO2 capture rates of over 98%, with 55% of the observations falling within a range of 86–98%. “This evaluation under DNV’s Recommended Practice validates the capability of Carbon Ridge’s modular centrifugal OCCS technology to significantly reduce the emissions of existing and newbuild vessels,” said Chase Dwyer, Carbon Ridge CEO & Founder. “The initial data and learnings from the STI Spiga trial further underpin our ambitions to scale Carbon Ridge’s OCCS across the global fleet. This work would not be possible without industry partners like Scorpio Tankers Inc supporting the deployment of these critical technologies.” Chara Georgopoulou, Head of Onboard Carbon Capture, DNV Maritime, said: “Independently verified carbon capture rates will be vital to building out a commercially viable business model for OCCS. At DNV we are applying our new OCCS verification Recommended Practice to make sure performance reporting can be accurately and consistently