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
1,081 at D/E2,510 rated vessels · 463 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 | 1,485 | 1–3% | €80k–250k | — | vendor claim |
| Propeller redesign / replacement | 1,440 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 1,344 | 2–6% | €300k–900k | — | vendor claim |
| Methanol dual-fuel conversion | 965 | 5–15% | €8,000k–20,000k | — | vendor claim |
| LNG dual-fuel conversion | 795 | 15–25% | €15,000k–35,000k | — | vendor claim |
| Shaft generator / PTO | 360 | 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 |
| SEPELU · <25k | E | 26y | 2026 |
| MSC SABRINA III · <25k | E | 37y | 2026 |
| NILEDUTCH LION · 100-200k | E | 18y | 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 |
|---|---|---|---|---|---|
| 1751 |
CONTSHIP LEX
IMO 9346562
|
1,100 TEU | 2006 |
17.6
|
E |
| 1752 |
MEDKON CANAKKALE
IMO 9341964
|
698 TEU | 2007 |
17.6
|
E |
| 1753 |
ANINA
IMO 9354351
|
1,008 TEU | 2006 |
17.7
|
E |
| 1754 |
AKACIA
IMO 9315020
|
868 TEU | 2004 |
17.7
|
E |
| 1755 |
ATLANTIC EXPRESS
IMO 9330850
|
1,100 TEU | 2007 |
17.7
|
E |
| 1756 |
ELBSPRING
IMO 9412529
|
880 TEU | 2010 |
17.7
|
E |
| 1757 |
SVENDBORG
IMO 9454230
|
1,085 TEU | 2006 |
17.8
|
E |
| 1758 |
CMA CGM NOUADHIBOU
IMO 9376892
|
1,350 TEU | 2007 |
17.8
|
E |
| 1759 |
JONA SOPHIE
IMO 9144718
|
910 TEU | 1997 |
17.8
|
E |
| 1760 |
MSC CAITLIN
IMO 9169043
|
1,658 TEU | 1998 |
17.8
|
E |
| 1761 |
HANNA
IMO 9376048
|
868 TEU | 2008 |
17.8
|
E |
| 1762 |
NORDIC ITALIA
IMO 9474395
|
1,085 TEU | 2012 |
17.9
|
E |
| 1763 |
MED TEKIRDAG
IMO 9265598
|
1,100 TEU | 2003 |
17.9
|
E |
| 1764 |
MED DENIZLI
IMO 9106493
|
1,055 TEU | 1996 |
17.9
|
E |
| 1765 |
AMINA
IMO 9448683
|
1,085 TEU | 2011 |
17.9
|
E |
| 1766 |
CONTSHIP ECO
IMO 9492751
|
700 TEU | 2008 |
17.9
|
E |
| 1767 |
WEC DE HOOGH
IMO 9315018
|
868 TEU | 2005 |
18.0
|
E |
| 1768 |
CONTSHIP BOX
IMO 9449845
|
1,496 TEU | 2009 |
18.0
|
E |
| 1769 |
NOVA
IMO 9250098
|
966 TEU | 2002 |
18.0
|
E |
| 1770 |
BAKKAFOSS
IMO 9429194
|
880 TEU | 2009 |
18.1
|
E |
| 1771 |
MSC WAVE F
IMO 9232462
|
962 TEU | 2001 |
18.1
|
E |
| 1772 |
EF ELENA
IMO 9368730
|
1,338 TEU | 2007 |
18.2
|
E |
| 1773 |
MED CORLU
IMO 9106479
|
1,055 TEU | 1995 |
18.2
|
E |
| 1774 |
CONTSHIP GIN
IMO 9517434
|
1,350 TEU | 2011 |
18.2
|
E |
| 1775 |
VERA RAMBOW
IMO 9432220
|
1,425 TEU | 2008 |
18.2
|
E |
| 1776 |
MSC ASLI
IMO 9162631
|
1,733 TEU | 2000 |
18.3
|
E |
| 1777 |
SC MEMPHIS
IMO 9324174
|
1,200 TEU | 2005 |
18.3
|
E |
| 1778 |
WEC VERMEER
IMO 9237371
|
868 TEU | 2001 |
18.3
|
E |
| 1779 |
SKYVIEW
IMO 9358890
|
1,300 TEU | 2007 |
18.3
|
E |
| 1780 |
IDA RAMBOW
IMO 9354478
|
1,008 TEU | 2007 |
18.3
|
E |
| 1781 |
MARIELYST
IMO 9448669
|
1,085 TEU | 2010 |
18.4
|
E |
| 1782 |
EVER PRIDE
IMO 9249233
|
1,206 TEU | 2003 |
18.4
|
E |
| 1783 |
BARBARA P
IMO 9144720
|
910 TEU | 1997 |
18.5
|
E |
| 1784 |
MAYFIELD
IMO 9216353
|
1,216 TEU | 2001 |
18.5
|
E |
| 1785 |
TRADEWIND
IMO 9367944
|
907 TEU | 2007 |
18.5
|
E |
| 1786 |
MERITO
IMO 9167942
|
1,104 TEU | 1998 |
18.6
|
E |
| 1787 |
MSC CHARLOTTE
IMO 9330238
|
1,100 TEU | 2007 |
18.7
|
E |
| 1788 |
ATLANTIC SILVER
IMO 9396622
|
1,350 TEU | 2008 |
18.7
|
E |
| 1789 |
NORDIC PORTO
IMO 9448671
|
1,085 TEU | 2011 |
18.7
|
E |
| 1790 |
MSC ABIGAIL F
IMO 9330226
|
1,100 TEU | 2006 |
18.8
|
E |
| 1791 |
WEC FRANS HALS
IMO 9326964
|
862 TEU | 2005 |
18.8
|
E |
| 1792 |
ELBSUN
IMO 9429261
|
880 TEU | 2012 |
18.8
|
E |
| 1793 |
NAVI BALTIC
IMO 9386718
|
1,425 TEU | 2009 |
18.8
|
E |
| 1794 |
OEL INDIA
IMO 9351816
|
620 TEU | 2008 |
18.9
|
E |
| 1795 |
MSC VERA F
IMO 9235610
|
1,100 TEU | 2003 |
19.0
|
E |
| 1796 |
KATHARINA SCHEPERS
IMO 9584865
|
1,036 TEU | 2012 |
19.1
|
E |
| 1797 |
MSC SIGMA F
IMO 9330240
|
1,100 TEU | 2007 |
19.1
|
E |
| 1798 |
BG ORANGE
IMO 9964637
|
1,400 TEU | 2024 |
19.1
|
E |
| 1799 |
MUNKSUND
IMO 9429223
|
880 TEU | 2012 |
19.2
|
E |
| 1800 |
ELBWIND
IMO 9483334
|
1,036 TEU | 2012 |
19.2
|
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.