CII sensitivity to speed reduction - cubic fuel-speed relationship improves CII but reduces transport work.
Formula
$$ \text{CII ratio} = \left(\frac{v_1}{v_0}\right)^3 \cdot \frac{v_0}{v_1} = \left(\frac{v_1}{v_0}\right)^2 $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $v_0, v_1$ | Baseline and new speeds | kn | voyage plan |
Sources
- IMO MEPC.336(76).