CII calculator › Ro-ro passenger ship — high-speed craft (SOLAS chapter X)
Ro-ro passenger ship — high-speed craft (SOLAS chapter X) CII calculator
Work out the attained and required Carbon Intensity Indicator (CII) of a ro-ro passenger ship — high-speed craft (SOLAS chapter X) and its A–E rating for any year from 2023 to 2030. Capacity for this ship type is gross tonnage (GT), so the CII is in grams of CO₂ per GT·nautical mile.
Required CII by ship size, 2023–2030
Required CII in g CO₂/(GT·nm) for example sizes. The required value tightens each year by the reduction factor Z.
| GT | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 |
|---|---|---|---|---|---|---|---|---|
| Z | 5% | 7% | 9% | 11% | 13.625% | 16.25% | 18.875% | 21.5% |
| 5,000 | 79.26 | 77.59 | 75.92 | 74.25 | 72.06 | 69.87 | 67.68 | 65.49 |
| 8,000 | 63.85 | 62.50 | 61.16 | 59.81 | 58.05 | 56.29 | 54.52 | 52.76 |
Reference line
The 2019 reference value is a × Capacity−c with these parameters from IMO resolution MEPC.353(78), Table 1:
| Size | Capacity used | a | c |
|---|---|---|---|
| All sizes | GT | 4196 | 0.46 |
Rating boundaries
MEPC.354(78) gives no rating boundaries for high-speed craft, so the calculator shows the required CII but cannot assign an A–E rating.
See how the CII is calculated.