DNV verifies Carbon Ridge onboard carbon capture system in tanker pilot

June 03, 2026

(WO) — DNV has verified the performance of an onboard carbon capture and storage (OCCS) system developed by Carbon Ridge following a five-month pilot installation aboard a Scorpio Tankers vessel. 

The pilot, conducted on the 109,999-dwt product tanker STI Spiga, evaluated Carbon Ridge's centrifugal OCCS technology during normal commercial operations. According to DNV's assessment, the system achieved peak CO₂ capture rates exceeding 98%, with more than half of recorded observations falling within a range of 86% to 98%.

DNV conducted the evaluation using its Recommended Practice for performance verification of onboard carbon capture and storage systems, reviewing the pilot's methodology, calculations and reported performance data.

The trial marks the first maritime deployment of a centrifugal onboard carbon capture system and represents the first time DNV has independently verified performance under its OCCS framework.

“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, Chief Executive Officer and Founder of Carbon Ridge.

The pilot installation was completed aboard STI Spiga during a scheduled shipyard visit in Turkey before the vessel returned to commercial service. Carbon Ridge said the results will support future deployment and scaling of the technology across additional vessels.

“Independently verified carbon capture rates will be vital to building out a commercially viable business model for OCCS,” said Chara Georgopoulou, Head of Onboard Carbon Capture at DNV Maritime.

The project reflects growing industry interest in onboard carbon capture technologies as shipowners evaluate options to reduce emissions and comply with evolving environmental requirements.

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