IMO DCS / CII | Annual fuel and activity data; attained/required CII and A–E rating | CO₂, distance, DWT/GT capacity selection and vessel-specific CII rating for 12 ship types | Noon-report HFO/MGO + user-supplied capacity/vessel type | All fuel types, SEEMP linkage, Administration verification and GISIS submission are not completed in the current workflow. |
|---|
EU MRV | Voyage monitoring; annual CO₂/CH₄/N₂O report and accredited verification | Period fuel, distance and internal CO₂ summary | Noon report; BDN is checked only for a fuel-coverage warning | Per-voyage MRV scoping, CH₄/N₂O, monitoring-plan workflow and THETIS-MRV submission are absent. |
|---|
EU ETS | Allowance surrender obligation from verified in-scope GHG | User-supplied scope ratio × CO₂ × annual phase-in factor | Internal CO₂ total and manual 0–1 scope ratio | CH₄/N₂O required in 2026, automatic voyage scope, company aggregation and Union Registry workflow are absent. |
|---|
FuelEU | Complete WtW CO₂eq intensity, target and compliance balance | Approximate CO₂-based WtW indicator for HFO/MGO | Noon-report fuel mass + default LHV/WtT factors | CH₄ slip, N₂O, pathway/certification, OPS, full voyage scope, verifier and FuelEU Database workflow are absent. |
|---|