Slow-Steaming GHG - CII Rating Sensitivity
CII sensitivity to speed reduction - cubic fuel-speed relationship improves CII but reduces transport work.
Fuel per voyage ratio
0.735 -
CII change
-26.5%
Formula, assumptions, and limits
Net: CII ∝ v². 12 kn vs 14 kn → CII improves ~27 %. Slow-steaming is the fastest CII lever; often moves ship from D → C rating.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Baseline and new speeds | kn | voyage plan |