Calculate attained CII and the A–E rating band for a given calendar year - the operational carbon-intensity check introduced 2023-01-01.
Formula
$$ \text{CII} = \frac{\sum F_i \cdot C_F}{DWT \cdot D} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $F_i$ | Annual fuel consumption | t/yr | IMO DCS |
| $C_F$ | Fuel carbon factor | tCO₂/tfuel | MEPC.364(79) |
| $DWT$ | Deadweight | dwt | tonnage certificate |
Sources
- MEPC.336(76) / MEPC.337(76).