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Ships Add Onboard Carbon Capture
Coverage from Nature, ScienceDirect, and others
Articles
19
Active Days
356
The Topic
Onboard carbon capture and storage is being developed as a possible emissions-reduction option for ships that remain dependent on fossil or transition fuels. Studies indicate that performance depends heavily on vessel design, engine conditions, capture technology, methane emissions, available space, and arrangements for storing and offloading captured CO2. DNV has introduced a common verification framework, but wider adoption still depends on vessel integration, carbon-reception infrastructure, and regulatory recognition.
First Article: 09/11/25
Latest Article: 09/01/26
Summary
- LNG carriers and large tankers appear best suited for early onboard carbon capture because they generally offer more space and favorable operating and energy characteristics.
- Onboard systems can reduce lifecycle greenhouse-gas emissions, but reported benefits vary substantially with vessel operations, system design, methane slip, and fuel-supply emissions.
- Cryogenic and solvent-based systems show strong performance under suitable conditions, while off-design engine operation can sharply reduce capture efficiency or increase energy use.
- Shore-based solvent regeneration may improve the economics and practicality of maritime capture by reducing onboard energy and space requirements.
- DNV-RP-0698 establishes harmonized metrics and third-party verification procedures for measuring onboard capture performance across newbuild and retrofit projects.
- Commercial rollout remains route-specific and pilot-led because captured CO2 must be stored, transported, and received at ports, while IMO crediting rules remain incomplete.
History
The story has shifted away from regulatory pathway-building toward a more operationally grounded assessment of where onboard carbon capture works best and why. The new version adds clearer vessel-segment prioritization and specific technical factors that determine whether the technology is practical.
The story has shifted from technical feasibility to regulatory pathway-building, with EU and IMO signals now making onboard carbon capture look more deployable for compliance use on fossil- and transitional-fuel ships. Standardization is also becoming more concrete around DNV's verification framework, while port access, storage, and traceability remain the main blockers.
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Timeline: 356 Days
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