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 & 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
24.269g CO₂ / (GT·nm)
Rating
A
Major superior performance. No corrective action required.
Formula, assumptions, and limits
Same reference and d-boundaries as Ro-Pax. Battery-electric domestic ferries with zero fuel burn at sea already achieve A rating by construction - annual CII target is trivially met.