Navalyze · Market view · Segment
Ro-ro ships, 2021
225 ro-ro ships reported to THETIS-MRV for 2021, emitting 5.5 Mt of CO₂. Efficiency is measured as g CO₂/t·nm.
Ro-ro ships report CO₂ per tonne-mile of cargo carried, so ships running part-empty score worse.
The segment at a glance
Operators
The 2021 public files do not name the companies managing each ship, so operator rankings start in 2024.
Efficiency by ship size
Bigger ships move a tonne of cargo for less fuel, so ships are compared within size bands. Each row is drawn against the segment median.
- Q1: ~935 t278 g CO₂/t·nm
- Q2: ~2,222 t156 g CO₂/t·nm
- Q3: ~3,338 t103 g CO₂/t·nm
- Q4: ~4,981 t73.2 g CO₂/t·nm
- Q5: ~6,661 t62.2 g CO₂/t·nm
Q1 to Q5 split the fleet into fifths by average cargo carried, derived from the published ratios.
Who verifies the reports
Accredited verifiers check each ship's MRV report. Their share of the segment's ships and CO₂.
- DNV27.7% / 36.0%
- RINA25.7% / 18.7%
- Lloyd's Register20.7% / 15.1%
- Verifavia18.3% / 18.7%
- Bureau Veritas5.5% / 5.3%
- Korean Register0.7% / 1.3%
- ClassNK0.6% / 2.7%
- ABS0.6% / 0.9%
- EMICERT0.2% / 0.4%
- Dromon Bureau of Shipping0.1% / 0.4%
- 1 others0.0% / 0.4%
How fuel is measured
Each ship's monitoring plan names one or more of the four MRV methods.
Most common combinations
- A41%
- C32%
- B9%
- A + C6%
- B + C5%
- A + B5%
- A + B + C1%
Share of 211 emission reports that name a method; a report can name several.
Notes
- Medians and rankings use 219 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.