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
1,079 at D/E2,510 rated vessels · 443 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 | 1,640 | 1–3% | €80k–250k | — | vendor claim |
| Propeller redesign / replacement | 1,427 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 1,330 | 2–6% | €300k–900k | — | vendor claim |
| Methanol dual-fuel conversion | 933 | 5–15% | €8,000k–20,000k | — | vendor claim |
| LNG dual-fuel conversion | 763 | 15–25% | €15,000k–35,000k | — | vendor claim |
| Shaft generator / PTO | 348 | 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 |
| C LION · 100-200k | E | 21y | 2026 |
| HAMBURG TRADER · <25k | 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 |
|---|---|---|---|---|---|
| 1701 |
NORDIC ISTRIA
IMO 9474383
|
1,085 TEU | 2011 |
15.7
|
E |
| 1702 |
DANIEL A
IMO 9238064
|
1,221 TEU | 2001 |
15.8
|
E |
| 1703 |
CMA CGM SINNAMARY
IMO 9845673
|
2,296 TEU | 2020 |
15.8
|
E |
| 1704 |
AYDOGAN
IMO 9149897
|
1,730 TEU | 1999 |
15.9
|
E |
| 1705 |
CONTSHIP DAY
IMO 9509786
|
1,496 TEU | 2010 |
15.9
|
E |
| 1706 |
KARLA A
IMO 9297577
|
1,676 TEU | 2004 |
15.9
|
E |
| 1707 |
TAMANRASSET
IMO 9760615
|
1,700 TEU | 2017 |
16.0
|
E |
| 1708 |
GERDA
IMO 9432232
|
1,421 TEU | 2009 |
16.1
|
E |
| 1709 |
MOLIVA
IMO 9454034
|
951 TEU | 2014 |
16.1
|
E |
| 1710 |
AS SELINA
IMO 9516789
|
1,400 TEU | 2012 |
16.1
|
E |
| 1711 |
CMA CGM GULF EXPRESS
IMO 9239874
|
1,641 TEU | 2002 |
16.2
|
E |
| 1712 |
OOCL RAUMA
IMO 9462794
|
1,425 TEU | 2009 |
16.2
|
E |
| 1713 |
MSC MARYLENA II
IMO 9169031
|
1,388 TEU | 1998 |
16.3
|
E |
| 1714 |
RMS MEL
IMO 9387607
|
698 TEU | 2008 |
16.3
|
E |
| 1715 |
CMA CGM KAILAS
IMO 9339545
|
1,858 TEU | 2006 |
16.4
|
E |
| 1716 |
AS FABIANA
IMO 9395109
|
1,284 TEU | 2007 |
16.4
|
E |
| 1717 |
WARNOW MASTER
IMO 9449833
|
1,496 TEU | 2006 |
16.4
|
E |
| 1718 |
SC MEDFORD
IMO 9275103
|
1,200 TEU | 2004 |
16.4
|
E |
| 1719 |
ATLANTIC NORTH
IMO 9236597
|
1,129 TEU | 2002 |
16.4
|
E |
| 1720 |
THETIS D
IMO 9372274
|
1,421 TEU | 2009 |
16.4
|
E |
| 1721 |
RACHEL BORCHARD
IMO 9212010
|
1,216 TEU | 2000 |
16.5
|
E |
| 1722 |
MSC ESHA F
IMO 9004231
|
923 TEU | 1993 |
16.5
|
E |
| 1723 |
MSC MIA SUMMER II
IMO 9169067
|
1,388 TEU | 1999 |
16.5
|
E |
| 1724 |
HEINRICH EHLER
IMO 9372200
|
1,421 TEU | 2008 |
16.5
|
E |
| 1725 |
BG RED
IMO 9976965
|
1,400 TEU | 2022 |
16.6
|
E |
| 1726 |
CMA CGM BLOSSOM
IMO 9962524
|
1,096 TEU | 2023 |
16.6
|
E |
| 1727 |
CMA CGM KOUROU
IMO 9845659
|
2,296 TEU | 2020 |
16.6
|
E |
| 1728 |
DHANU
IMO 9122473
|
1,730 TEU | 2001 |
16.7
|
E |
| 1729 |
MEDKON MERSIN
IMO 9430040
|
232 TEU | 2008 |
16.7
|
E |
| 1730 |
MSC HOGGAR
IMO 9286449
|
858 TEU | 2004 |
16.8
|
E |
| 1731 |
WEC JAN STEEN
IMO 9354416
|
868 TEU | 2007 |
16.9
|
E |
| 1732 |
HALSTED
IMO 9337262
|
2,824 TEU | 2007 |
16.9
|
E |
| 1733 |
RMS TEAM
IMO 9282170
|
1,096 TEU | 2004 |
16.9
|
E |
| 1734 |
JAN
IMO 9477335
|
1,338 TEU | 2009 |
16.9
|
E |
| 1735 |
MARBURG
IMO 9387592
|
1,025 TEU | 2009 |
16.9
|
E |
| 1736 |
MSC ELKE F
IMO 9318773
|
956 TEU | 2005 |
17.0
|
E |
| 1737 |
BURAK BAYRAKTAR
IMO 9260536
|
858 TEU | 2002 |
17.0
|
E |
| 1738 |
CONTSHIP JET
IMO 9348625
|
1,267 TEU | 2007 |
17.1
|
E |
| 1739 |
MICHIGAN
IMO 9437139
|
1,296 TEU | 2008 |
17.1
|
E |
| 1740 |
ALEXANDER B
IMO 9328649
|
1,223 TEU | 2006 |
17.1
|
E |
| 1741 |
FIONA
IMO 9149885
|
1,730 TEU | 1998 |
17.1
|
E |
| 1742 |
ALANA
IMO 9297589
|
1,008 TEU | 2004 |
17.1
|
E |
| 1743 |
BALTIC SHARK
IMO 9315032
|
868 TEU | 2004 |
17.4
|
E |
| 1744 |
ATLANTIC WEST
IMO 9396610
|
1,345 TEU | 2008 |
17.4
|
E |
| 1745 |
JONATHAN P
IMO 9357872
|
1,732 TEU | 2006 |
17.4
|
E |
| 1746 |
MSC ROMINA II
IMO 9449821
|
1,496 TEU | 2009 |
17.4
|
E |
| 1747 |
MSC ORTOLAN II
IMO 9401685
|
1,740 TEU | 2009 |
17.5
|
E |
| 1748 |
UNI-PHOENIX
IMO 9202170
|
1,618 TEU | 1998 |
17.5
|
E |
| 1749 |
BALLATA
IMO 9327578
|
1,118 TEU | 2006 |
17.5
|
E |
| 1750 |
YM INVENTIVE
IMO 9319105
|
1,805 TEU | 2004 |
17.5
|
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.