Container Ship Emissions & Retrofit Radar
Ships ranked by AER (Annual Efficiency Ratio) — grams of CO₂ emitted per tonne of deadweight carried one nautical mile (g CO₂/dwt·nm), the IMO carbon-intensity metric behind the CII rating — from official EU MRV emissions data for reporting year 2024. Lower is greener. Pick a segment and size class to see the greenest vessels first.
CII band distribution
1,080 at D/E2,510 rated vessels · 553 of the D/E set dock within 12 months
Docking pipeline — D/E vessels per quarter
Windows estimated from the class-expiry docking model, not bookings.
Top eligible retrofit measures for this segment
| Measure | Eligible | CO₂ reduction | Capex band | Payback | Confidence |
|---|---|---|---|---|---|
| Turbocharger cut-out | 1,612 | 1–3% | €80k–250k | — | vendor claim |
| Propeller redesign / replacement | 1,443 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 1,346 | 2–6% | €300k–900k | — | vendor claim |
| Methanol dual-fuel conversion | 903 | 5–15% | €8,000k–20,000k | — | vendor claim |
| LNG dual-fuel conversion | 744 | 15–25% | €15,000k–35,000k | — | vendor claim |
| Shaft generator / PTO | 370 | 3–6% | €500–1,500/kW | — | vendor claim |
Capex bands are indicative vendor/literature priors. Payback appears once price parameters are configured.
Retrofit opportunity in this segment
Retrofit prospects — worst band first
| Vessel | Band | Age | Drop year |
|---|---|---|---|
| HANSA AFRICA · 25-60k | E | 16y | 2026 |
| MSC ANNAMARIA · <25k | E | 1y | 2026 |
| SEPELU · <25k | E | 26y | 2026 |
| MSC SABRINA III · <25k | E | 37y | 2026 |
| C LION · 100-200k | E | 21y | 2026 |
Note: Container/ro-ro cargo ship vessels are excluded from this ranking — their CII type is a per-vessel flag-state determination, so no valid comparison metric exists for them.
| # | Vessel | Size (TEU) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 1801 |
ALEXANDER L
IMO 9431343
|
1,368 TEU | 2011 |
19.2
|
E |
| 1802 |
ELBWAVE
IMO 9504035
|
1,000 TEU | 2011 |
19.3
|
E |
| 1803 |
LARS D
IMO 9252797
|
862 TEU | 2003 |
19.3
|
E |
| 1804 |
ELBSTROM
IMO 9369007
|
974 TEU | 2008 |
19.4
|
E |
| 1805 |
ISABELLA B
IMO 9483358
|
1,036 TEU | 2012 |
19.4
|
E |
| 1806 |
ELBSKY
IMO 9412531
|
1,025 TEU | 2011 |
19.4
|
E |
| 1807 |
CONTSHIP TOP
IMO 9395616
|
1,080 TEU | 2008 |
19.5
|
E |
| 1808 |
HENNEKE RAMBOW
IMO 9354430
|
868 TEU | 2007 |
19.6
|
E |
| 1809 |
JAGUAR
IMO 9127007
|
1,122 TEU | 1996 |
19.7
|
E |
| 1810 |
BEATE
IMO 9333345
|
868 TEU | 2005 |
19.7
|
E |
| 1811 |
MITO
IMO 9319571
|
1,118 TEU | 2006 |
19.7
|
E |
| 1812 |
NORDICA
IMO 9483695
|
1,036 TEU | 2011 |
19.7
|
E |
| 1813 |
ARIES J
IMO 9514767
|
1,036 TEU | 2011 |
19.8
|
E |
| 1814 |
CONTSHIP ACE
IMO 9348637
|
1,267 TEU | 2008 |
19.9
|
E |
| 1815 |
LILA CANADA
IMO 9332717
|
1,118 TEU | 2006 |
19.9
|
E |
| 1816 |
KILIA
IMO 9412517
|
1,025 TEU | 2010 |
20.0
|
E |
| 1817 |
SC PHILLY
IMO 9330276
|
1,100 TEU | 2007 |
20.0
|
E |
| 1818 |
HEINRICH
IMO 9584475
|
1,036 TEU | 2012 |
20.0
|
E |
| 1819 |
ELI A
IMO 9326976
|
868 TEU | 2005 |
20.1
|
E |
| 1820 |
AS SARA
IMO 9410272
|
1,713 TEU | 2010 |
20.1
|
E |
| 1821 |
NIEVES B
IMO 9483683
|
1,036 TEU | 2011 |
20.1
|
E |
| 1822 |
HELENA SCHEPERS
IMO 9584487
|
1,036 TEU | 2012 |
20.1
|
E |
| 1823 |
ZIM NEW ZEALAND
IMO 9366471
|
1,155 TEU | 2007 |
20.2
|
E |
| 1824 |
CONTSHIP NEW
IMO 9373905
|
1,118 TEU | 2007 |
20.2
|
E |
| 1825 |
VISITOR
IMO 9297606
|
862 TEU | 2004 |
20.2
|
E |
| 1826 |
PERSEUS
IMO 9371414
|
925 TEU | 2008 |
20.2
|
E |
| 1827 |
AKHISAR
IMO 9237149
|
600 TEU | 2000 |
20.3
|
E |
| 1828 |
SONATA
IMO 9316103
|
1,118 TEU | 2006 |
20.3
|
E |
| 1829 |
KATHERINE BORCHARD
IMO 9246530
|
862 TEU | 2004 |
20.3
|
E |
| 1830 |
PHOENIX J
IMO 9504047
|
1,036 TEU | 2010 |
20.3
|
E |
| 1831 |
BG JADE
IMO 9803687
|
1,004 TEU | 2018 |
20.3
|
E |
| 1832 |
WES GESA
IMO 9504061
|
1,000 TEU | 2012 |
20.3
|
E |
| 1833 |
ELBSAILOR
IMO 9448695
|
1,085 TEU | 2012 |
20.3
|
E |
| 1834 |
CHARLOTTA
IMO 9429209
|
877 TEU | 2009 |
20.4
|
E |
| 1835 |
LEYLA KALKAVAN
IMO 9126924
|
1,145 TEU | 1997 |
20.4
|
E |
| 1836 |
ATLANTIC MERCHANT
IMO 9378929
|
1,118 TEU | 2008 |
20.4
|
E |
| 1837 |
CMA CGM NADOR
IMO 9396696
|
1,036 TEU | 2007 |
20.4
|
E |
| 1838 |
WEC VERMEER
IMO 9237371
|
868 TEU | 2001 |
20.5
|
E |
| 1839 |
LOLA B
IMO 9353723
|
917 TEU | 2007 |
20.5
|
E |
| 1840 |
BG SAPPHIRE
IMO 9803699
|
1,004 TEU | 2018 |
20.5
|
E |
| 1841 |
ELBTRADER
IMO 9388534
|
974 TEU | 2008 |
20.5
|
E |
| 1842 |
ZIM AUSTRALIA
IMO 9366445
|
1,155 TEU | 2007 |
20.5
|
E |
| 1843 |
NCL AVERØY
IMO 9326990
|
868 TEU | 2006 |
20.5
|
E |
| 1844 |
CACHALOT
IMO 9212022
|
1,216 TEU | 2000 |
20.5
|
E |
| 1845 |
MAUREN
IMO 9306251
|
1,118 TEU | 2005 |
20.6
|
E |
| 1846 |
ANDANTE
IMO 9354387
|
868 TEU | 2007 |
20.6
|
E |
| 1847 |
SSF LILY
IMO 9318266
|
1,155 TEU | 2005 |
20.6
|
E |
| 1848 |
DAGMAR
IMO 9354399
|
868 TEU | 2006 |
20.7
|
E |
| 1849 |
ADMIRAL MOON
IMO 9437220
|
990 TEU | 2008 |
20.7
|
E |
| 1850 |
TITAN
IMO 9126998
|
1,122 TEU | 1996 |
20.7
|
E |
Which engines power the greenest fleets?
The main engine is the single largest CO₂ source on board — typically well over 80% of a ship's emissions come from propulsion. We aggregated this ranking the other way around: every engine design is scored by the measured carbon intensity of the vessels carrying it, licensee-built units merged under their design brand. The verdict from the 2024 data — modern dual-fuel designs like MAN B&W's ME-GI and WinGD's X-DF families, together with EGR/SCR-abated and ultra-long-stroke G-type engines, consistently power the most emission-friendly ships in service.
AER (Annual Efficiency Ratio) = annual CO₂ emissions ÷ (deadweight × distance sailed), the IMO carbon-intensity metric used for CII ratings. It is built only from measured CO₂, distance and deadweight — not the self-reported cargo transport-work figure, which is unreliable. Implausible outliers (top 2% per segment) are excluded. Grade A–E reflects each vessel's rank within its segment. Source: EMSA THETIS-MRV.