Onboard carbon capture for maritime decarbonization
Precise measurement supports reliable CO₂ capture, liquefaction and storage at sea
International shipping faces increasing pressure to reduce greenhouse gas emissions while continuing to operate with existing propulsion systems. Onboard carbon capture and storage (OCCS) offers a near-term solution, but reliable operation at sea requires precise monitoring of exhaust gas composition, solvent condition and key process parameters under harsh marine conditions.
Carbon Ridge and Endress+Hauser: A strong partnership for reliable onboard carbon capture
Onboard carbon capture setting sail: STI Spiga being equipped with the Carbon Ridge system before sea trials
The results
Excellent capture efficiency with a low footprint and high energy efficiency of the system
Compliance with evolving regulations and traceable data for transparent carbon accounting
Flow, level, pressure, temperature and liquid analysis ensure controlled CO₂ transfer, stable operating conditions and continuous monitoring of solvent health
"Carbon Ridge's OCCS is built for real-world performance. Partnership with Endress+Hauser ensures the precision and data integrity needed to drive maritime decarbonization forward with confidence."
Carbon Ridge
Deploying onboard carbon capture systems in maritime shipping involves a combination of technical, operational and regulatory challenges. Space and weight constraints limit how capture units, including compression and liquefaction, and storage can be integrated into existing vessels, making compact and modular designs essential. In addition to these constraints, the following aspects need to be taken into consideration:
Harsh conditions: Vibration, temperature variation and corrosive atmospheres place high demands on system robustness and long‑term reliability
Safety and system integration: OCCS must be safely integrated with propulsion and exhaust systems while meeting maritime safety and classification requirements
Measurement and verification: Emissions reduction must be accurately measured and documented to support monitoring, reporting and verification (MRV)
With Endress+Hauser’s technology, operators gain reliable, traceable data that ensures OCCS operates at peak performance, safeguards compliance with IMO GHG targets and supports transparent carbon accounting.
Realization
Flow measurement to accurately monitor CO2 transfer rates and solvent circulation, even at low flow rates
Level, pressure and temperature monitoring to maintain optimal operating conditions for solvent performance, CO2 compression and liquefaction
Liquid analysis transmitters and sensors with Memosens technology to assess solvent health, detect contamination and schedule timely reclaiming or exchange
Carbon Ridge’s onboard carbon capture solution demonstrates that meaningful emissions reduction in maritime shipping is possible today, even within the sector’s tight operational constraints. By combining a compact, retrofit‑ready system design with stable operation under real marine conditions, the solution offers shipowners a practical pathway to reduce emissions while longer‑term fuel transitions continue to evolve.
Together, Carbon Ridge and Endress+Hauser show how close collaboration between technology providers and instrumentation experts can help translate innovative decarbonization concepts into operationally viable solutions for hard‑to‑abate sectors.
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