• Incorporating CO2 that is captured from HFO combustion onboard vessels into concrete production results in the highest GHG emissions savings of the different utilisation pathways explored, as it partially displaces the need for carbon-intensive cement ashore • Post-capture transport and permanent storage of CO2 add minimal GHG emissions • The cost of avoided carbon for OCCS with permanent storage is between USD 269-405/tCO2 for a 40% gross capture on an MR tanker / Singapore, 6 May 2025 – A comprehensive life cycle assessment (LCA) conducted by the Global Centre for Maritime Decarbonisation (GCMD) quantifies OCCS’s potential to provide GHG emissions savings.The study, named COLOSSUS (Carbon capture, offloading, onshore storage, utilisation and permanent storage), provides an in-depth analysis of GHG emissions and costs associated with OCCS across the entire carbon value chain, accounting for emissions from fuel production, transport and use, to CO2 capture onboard the vessel and its final disposition. (....)