CII: 2027-2030 Reduction Factors and New SEEMP Granularity
New Appendix IX fields and 2027–2030 CII factors apply by ship type and scope: transport work does not universally mean cargo ton-miles and Part III follows its rolling three-year plan.
Operational Explanation
New Appendix IX fields and 2027–2030 CII factors apply by ship type and scope: transport work does not universally mean cargo ton-miles and Part III follows its rolling three-year plan.
Regulatory Reference
MEPC.385(81) Appendix IX; MEPC.395(82); MEPC.400(83) Z factors.
Scope of Application
Z: 2026 11%; 2027 13.625%; 2028 16.250%; 2029 18.875%; 2030 21.500%.
Procedure / How to Complete It
- Update Part II/data systems for applicable fields.
- Distinguish 1 August 2025 entry into force from 1 January 2025 early application.
- Use transport-work metric applicable to ship type.
- Maintain Part III required CII and next three-year implementation plan.
- Update by cycle, modifications, corrective actions or Administration/RO direction.
Practical Example
A passenger category uses its prescribed data/metric, not cargo ton-miles by formula.
What Typically Goes Wrong
Writing universal transport work (ton-miles) or attributing a standalone 31 December 2025 Part III deadline to MEPC.385/401.
Common Mistakes Mistake Library
| Mistake | Consequence | How to Avoid It |
|---|---|---|
| Writing universal transport work (ton-miles) or attributing a standalone 31 December 2025 Part III deadline to MEPC.385/401. | Non-compliant decision or treatment | Follow the approved arrangement and applicable sources |
What the PSCO Checks
Operational Tips
- Separate current requirement, class/maker, SMS and voluntary guidance.
- Do not improvise tests, thresholds or intervals.
- Record deviations and corrective action.
Preparation checklist
- Appendix IX fields
- Ship-type metric
- Dates distinct
- Z factors
- Rolling Part III
FAQ
Related Topics
Last substantive revision of this page: 31 August 2026 · page fingerprint c3d5e588e1bb