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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
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Formula, assumptions, and limits

CIIrequired=7540GT0.587(1Z)\text{CII}_\text{required} = 7540 \cdot \text{GT}^{-0.587} \cdot (1 - Z)
SymbolMeaningUnit
GTGTGross tonnage
ZZAnnual reductionfraction

Source: IMO MEPC.337/338/339(76)

In short

CII for short-sea passenger ferries using the MEPC.337 roro-passenger reference line.

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