Navalyze

Navalyze · Market view · Segment

Container ships, 2023

1,928 container ships reported to THETIS-MRV for 2023, emitting 36.3 Mt of CO₂. Efficiency is measured as g CO₂/t·nm.

The segment at a glance

Median ship
19.4
g CO₂/t·nm
Fuel per mile
165 kg
Median ship
Average speed
13.2 kn
Median ship, distance over hours at sea
Hours at sea
2,728
Median ship, EU-scope voyages (31% of the year)
CO₂ at berth
4.2%
Share emitted alongside in EU ports
Ships burning LNG
46
of 1,899 benchmarked

Operators

The 2023 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.

0.25×0.5×segment median2×4×
  • <10k t47.6 g CO₂/t·nm
  • 10–30k t23.7 g CO₂/t·nm
  • 30–60k t14.9 g CO₂/t·nm
  • 60–100k t10.5 g CO₂/t·nm
  • >100k t6.83 g CO₂/t·nm

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
  • DNV46.0% / 49.0%
  • ABS25.1% / 23.6%
  • ClassNK7.5% / 5.2%
  • China Classification Society5.1% / 2.9%
  • EnvService3.3% / 3.3%
  • RINA3.2% / 2.9%
  • Korean Register2.2% / 2.0%
  • Dromon Bureau of Shipping2.1% / 3.0%
  • Lloyd's Register2.0% / 2.4%
  • Bureau Veritas1.3% / 2.6%
  • 6 others2.3% / 3.2%

How fuel is measured

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

A · Bunker delivery notes
39%
Fuel bought, corrected by tank soundings
B · Bunker tank monitoring
33%
Tank readings on board
C · Flow meters
53%
Meters on the fuel lines to engines and boilers
D · Direct measurement
0%
CO₂ measured in the exhaust

Most common combinations

  • A34%
  • C30%
  • B + C20%
  • B12%
  • A + C3%
  • A + B1%
  • A + B + C0%

Share of 1,897 emission reports that name a method; a report can name several.

Notes

  • Medians and rankings use 1,899 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.