Navalyze

Navalyze · Market view · Segment

Ro-pax ships, 2022

413 ro-pax ships reported to THETIS-MRV for 2022, emitting 14.1 Mt of CO₂. Efficiency is measured as g CO₂/pax·nm and, for freight, g CO₂/t·nm freight.

Ro-pax ships carry passengers and freight, and THETIS reports CO₂ per transport work for each: per passenger-mile and per tonne-mile of freight. A freight-heavy ferry looks poor per passenger and good per tonne, a passenger-heavy one the other way round, so both are shown. Passenger figures stay the benchmark for allowance gaps.

The segment at a glance

Median ship, per passenger
626
g CO₂/pax·nm
Median ship, per freight tonne
253
g CO₂/t·nm freight
Fuel per mile
157 kg
Median ship
Average speed
16.0 kn
Median ship, distance over hours at sea
Hours at sea
4,197
Median ship, EU-scope voyages (48% of the year)
CO₂ at berth
7.4%
Share emitted alongside in EU ports
Ships burning LNG
11
of 394 benchmarked

Operators

The 2022 public files do not name the companies managing each ship, so operator rankings start in 2024.

Who verifies the reports

Accredited verifiers check each ship's MRV report. Their share of the segment's ships and CO₂.

Share of CO₂Share of ships
  • RINA39.5% / 32.5%
  • DNV28.0% / 31.0%
  • Verifavia19.9% / 19.9%
  • Bureau Veritas6.0% / 5.8%
  • Lloyd's Register2.7% / 4.8%
  • EMICERT1.6% / 2.9%
  • MRVControl AB1.5% / 1.2%
  • ICS Verification Services0.7% / 1.5%
  • ClassNK0.2% / 0.5%

How fuel is measured

Each ship's monitoring plan names one or more of the four MRV methods.

A · Bunker delivery notes
48%
Fuel bought, corrected by tank soundings
B · Bunker tank monitoring
38%
Tank readings on board
C · Flow meters
31%
Meters on the fuel lines to engines and boilers
D · Direct measurement
0%
CO₂ measured in the exhaust

Most common combinations

  • A36%
  • C24%
  • B23%
  • A + B9%
  • B + C5%
  • A + C2%
  • A + B + C0%

Share of 410 emission reports that name a method; a report can name several.

Notes

  • Medians and rankings use 394 full-year reports with fuel; part-year and zero-fuel reports count towards totals only.
  • THETIS reports time at sea on EU-scope voyages only, not time in port. CO₂ at berth is the closest measure of port activity it publishes.
  • Speed and distance are derived from the published ratios; THETIS has no distance column.