Required CII for a given ship-type and year - the benchmark used in the A-E rating thresholds.
Formula
$$ \text{CII}_{req} = a \cdot DWT^{-c} \cdot (1 - Z) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $a, c$ | Ship-type coefficients | - | MEPC.337(76) |
| $Z$ | Reduction factor | - | MEPC.338(76) |
Sources
- MEPC.337(76), MEPC.338(76).