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Passenger Ferry CII

CII for short-sea passenger ferries. Uses the Ro-Pax reference line even for pax-dominated ships (IMO treats ferries, Ro-Pax, and passenger-only interchangeably under the roro_passenger CII class).

Ship typeFerry

Ship & voyage

Fuel

Short-sea fleet increasingly battery-electric or hybrid - Norwegian and Danish fjord ferries lead the switch.

Attained CII
16.624g CO₂ / (GT·nm)
Required CII
22.082g CO₂ / (GT·nm)
Rating
A
Major superior performance. No corrective action required.

Formula, assumptions, and limits

CIIrequired=2023⋅GT−0.460⋅(1−Z)\text{CII}_\text{required} = 2023 \cdot \text{GT}^{-0.460} \cdot (1 - Z)
SymbolMeaningUnit
GTGTGross tonnage
ZZAnnual reductionfraction

Source: IMO MEPC.353(78), MEPC.338(76) as amended by MEPC.400(83), and MEPC.354(78)

In short

CII for short-sea passenger ferries using the MEPC.353(78) roro-passenger reference line.

Learn the theory Specialised Ship Types: Ro-ro, Reefer, Heavy-Lift