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 2025. 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 |
AS ALVA
IMO 9337030
|
1,853 TEU | 2008 |
13.1
|
D |
| 1702 |
MED CESME
IMO 9256365
|
1,740 TEU | 2003 |
13.1
|
D |
| 1703 |
MSC KATALIN II
IMO 9232656
|
1,730 TEU | 2002 |
13.1
|
D |
| 1704 |
CONTAINERSHIPS NORD
IMO 9813993
|
1,380 TEU | 2015 |
13.1
|
D |
| 1705 |
ECO MAESTRO
IMO 9985942
|
13,675 | 2024 |
13.1
|
D |
| 1706 |
KAPTAN AYTAC A
IMO 9242302
|
1,200 TEU | 2001 |
13.1
|
D |
| 1707 |
MSC SAMU
IMO 9222106
|
2,764 TEU | 2001 |
13.1
|
D |
| 1708 |
MICHEL A
IMO 9379349
|
1,604 TEU | 2007 |
13.1
|
D |
| 1709 |
CMA CGM HAMLET
IMO 9763710
|
1,924 TEU | 2016 |
13.2
|
D |
| 1710 |
NILEDUTCH LION
IMO 9337456
|
8,626 TEU | 2005 |
13.2
|
D |
| 1711 |
SONGA WOLF
IMO 9373498
|
1,732 TEU | 2007 |
13.2
|
D |
| 1712 |
CMA CGM QUEST
IMO 9734159
|
2,210 TEU | 2017 |
13.2
|
D |
| 1713 |
SONGA PUMA
IMO 9399789
|
2,797 TEU | 2009 |
13.2
|
D |
| 1714 |
CMA CGM DAVAO
IMO 9347293
|
1,819 TEU | 2008 |
13.2
|
D |
| 1715 |
MSC JIANI
IMO 9966934
|
1,800 TEU | 2023 |
13.2
|
D |
| 1716 |
MSC CALISTA II
IMO 9306067
|
1,578 TEU | 2005 |
13.3
|
D |
| 1717 |
ECO LEVANT
IMO 9985954
|
13,684 | 2024 |
13.3
|
D |
| 1718 |
MED STAR
IMO 9337028
|
1,800 TEU | 2007 |
13.3
|
D |
| 1719 |
CALYPSO
IMO 9550371
|
1,577 TEU | 2010 |
13.3
|
D |
| 1720 |
CMA CGM FORT SAINT CHARLES
IMO 9809849
|
3,300 TEU | 2019 |
13.3
|
D |
| 1721 |
ESSENCE
IMO 9491496
|
1,436 TEU | 2011 |
13.3
|
D |
| 1722 |
SCORPIUS
IMO 9307279
|
2,572 TEU | 2007 |
13.3
|
D |
| 1723 |
SC MONTREAL
IMO 9311830
|
2,478 TEU | 2004 |
13.3
|
D |
| 1724 |
MSC AGGELIKI II
IMO 9357846
|
1,732 TEU | 2007 |
13.3
|
D |
| 1725 |
MERATUS JAYAWIJAYA
IMO 9305881
|
2,474 TEU | 2005 |
13.3
|
D |
| 1726 |
OSLO TRADER
IMO 9817925
|
1,800 TEU | 2019 |
13.4
|
D |
| 1727 |
CMA CGM MAPUTO
IMO 9491628
|
1,710 TEU | 2011 |
13.4
|
D |
| 1728 |
CMA CGM FORT DE FRANCE
IMO 9809825
|
3,300 TEU | 2019 |
13.4
|
D |
| 1729 |
CMA CGM SAHARA
IMO 9220861
|
2,207 TEU | 2002 |
13.4
|
D |
| 1730 |
EVER COZY
IMO 9904510
|
1,809 TEU | 2021 |
13.5
|
D |
| 1731 |
MSC NITA
IMO 9084607
|
1,512 TEU | 1996 |
13.5
|
E |
| 1732 |
CMA CGM NAVEGANTES
IMO 9303780
|
2,824 TEU | 2006 |
13.5
|
E |
| 1733 |
CMA CGM RED
IMO 9690107
|
2,257 TEU | 2016 |
13.5
|
E |
| 1734 |
KOTA NAZIM
IMO 9390240
|
1,810 TEU | 2008 |
13.6
|
E |
| 1735 |
EMPIRE
IMO 9387425
|
1,440 TEU | 2009 |
13.6
|
E |
| 1736 |
CAPITAINE TUPAIA
IMO 9410301
|
1,713 TEU | 2010 |
13.6
|
E |
| 1737 |
CHARM C
IMO 9383259
|
2,546 TEU | 2009 |
13.6
|
E |
| 1738 |
SOUTH
IMO 9491472
|
1,436 TEU | 2011 |
13.6
|
E |
| 1739 |
X-PRESS KAVERI
IMO 9470765
|
1,577 TEU | 2005 |
13.6
|
E |
| 1740 |
SEASPAN CALICANTO
IMO 9435038
|
2,546 TEU | 2010 |
13.6
|
E |
| 1741 |
FLEUR N
IMO 9509138
|
2,758 TEU | 2012 |
13.6
|
E |
| 1742 |
BG BLUE
IMO 9964625
|
1,400 TEU | 2021 |
13.6
|
E |
| 1743 |
PANDA 004
IMO 9968906
|
1,400 TEU | 2021 |
13.6
|
E |
| 1744 |
CAPT. KATTELMANN
IMO 9330915
|
1,440 TEU | 2006 |
13.6
|
E |
| 1745 |
MSC RICHIKA F
IMO 9386988
|
1,402 TEU | 2008 |
13.7
|
E |
| 1746 |
MSC IRA II
IMO 9323493
|
1,732 TEU | 2007 |
13.7
|
E |
| 1747 |
ZEBRA
IMO 9231157
|
2,622 TEU | 2001 |
13.7
|
E |
| 1748 |
BRUARFOSS
IMO 9822841
|
2,150 TEU | 2020 |
13.7
|
E |
| 1749 |
ECO UMANDE
IMO 9959541
|
1,170 TEU | 2024 |
13.7
|
E |
| 1750 |
KAAN KALKAVAN
IMO 9365879
|
1,849 TEU | 2012 |
13.8
|
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 2025 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.