HLVs fall under the MEPC.337 general-cargo reference. Operational profile includes DP positioning, ballasting, and crane power so the aux fuel share is unusually high.
Formula
$$ \text{CII}_\text{required} = 31948 \cdot \text{DWT}^{-0.793} \cdot (1 - Z) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $DWT$ | Deadweight | t | tonnage certificate |
| $Z$ | Annual reduction | fraction | MEPC.338(76) |
Shares general-cargo d-boundaries (0.83, 0.94, 1.06, 1.19).
Sources
- IMO MEPC.337/338/339(76).