Navalyze · Market view · Segment
General cargo ships, 2023
1,231 general cargo ships reported to THETIS-MRV for 2023, emitting 5.1 Mt of CO₂. Efficiency is measured as g CO₂/dwt·nm.
The segment at a glance
Median ship
20.7
g CO₂/dwt·nm
Fuel per mile
60 kg
Median ship
Average speed
10.5 kn
Median ship, distance over hours at sea
Hours at sea
2,040
Median ship, EU-scope voyages (23% of the year)
CO₂ at berth
5.7%
Share emitted alongside in EU ports
Ships burning LNG
4
of 1,045 benchmarked
Operators
The 2023 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
- Bureau Veritas29.6% / 20.9%
- DNV26.8% / 21.4%
- Verifavia7.5% / 12.0%
- ABS5.7% / 6.7%
- RINA5.4% / 5.9%
- China Classification Society5.3% / 7.0%
- Dromon Bureau of Shipping4.9% / 7.8%
- Lloyd's Register3.4% / 4.1%
- EnvService3.0% / 2.0%
- ClassNK2.7% / 4.6%
- 7 others5.8% / 7.7%
How fuel is measured
Each ship's monitoring plan names one or more of the four MRV methods.
A · Bunker delivery notes
74%
Fuel bought, corrected by tank soundings
B · Bunker tank monitoring
24%
Tank readings on board
C · Flow meters
11%
Meters on the fuel lines to engines and boilers
D · Direct measurement
0%
CO₂ measured in the exhaust
Most common combinations
- A68%
- B17%
- C6%
- A + B4%
- B + C3%
- A + C2%
- A + B + C1%
Share of 1,168 emission reports that name a method; a report can name several.
Notes
- Medians and rankings use 1,045 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.