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 · 551 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 |
|---|---|---|---|---|---|
| 2101 |
K-OCEAN
IMO 9143972
|
700 TEU | 1998 |
23.6
|
E |
| 2102 |
MSC ANNE F
IMO 9347803
|
916 TEU | 2007 |
23.7
|
E |
| 2103 |
ELBCARRIER
IMO 9388510
|
974 TEU | 2007 |
23.7
|
E |
| 2104 |
CT ROTTERDAM
IMO 9395575
|
974 TEU | 2009 |
23.7
|
E |
| 2105 |
CANDELARIA B
IMO 9277395
|
822 TEU | 2003 |
23.7
|
E |
| 2106 |
ATLANTICO
IMO 9641314
|
875 TEU | 2014 |
23.8
|
E |
| 2107 |
HENRIKE SCHEPERS
IMO 9404091
|
793 TEU | 2008 |
23.8
|
E |
| 2108 |
X-PRESS GODAVARI
IMO 9353735
|
917 TEU | 2008 |
23.9
|
E |
| 2109 |
RIDER
IMO 9322566
|
803 TEU | 2006 |
23.9
|
E |
| 2110 |
FENJA
IMO 9287716
|
822 TEU | 2003 |
23.9
|
E |
| 2111 |
NANTO
IMO 9083043
|
749 TEU | 1994 |
24.0
|
E |
| 2112 |
ANDREA
IMO 9333357
|
868 TEU | 2005 |
24.0
|
E |
| 2113 |
BG IRELAND
IMO 9355446
|
962 TEU | 2007 |
24.1
|
E |
| 2114 |
HELGAFELL
IMO 9306017
|
909 TEU | 2005 |
24.1
|
E |
| 2115 |
BF CARODA
IMO 9297618
|
862 TEU | 2004 |
24.1
|
E |
| 2116 |
FREYA
IMO 9219874
|
658 TEU | 2000 |
24.2
|
E |
| 2117 |
BERNHARD SCHEPERS
IMO 9492505
|
1,036 TEU | 2011 |
24.2
|
E |
| 2118 |
ILHA DA MADEIRA
IMO 9202077
|
712 TEU | 1999 |
24.2
|
E |
| 2119 |
NJORD
IMO 9349227
|
809 TEU | 2007 |
24.3
|
E |
| 2120 |
MIRROR
IMO 9328041
|
803 TEU | 2007 |
24.3
|
E |
| 2121 |
EF AVA
IMO 9389306
|
698 TEU | 2008 |
24.3
|
E |
| 2122 |
RIJNBORG
IMO 9355812
|
1,700 TEU | 2007 |
24.4
|
E |
| 2123 |
ADMIRAL MOON
IMO 9437220
|
990 TEU | 2008 |
24.4
|
E |
| 2124 |
MSC SAGITTARIUS F
IMO 9491616
|
957 TEU | 2012 |
24.4
|
E |
| 2125 |
JORK RULER
IMO 9328027
|
803 TEU | 2006 |
24.4
|
E |
| 2126 |
SANTUCA B
IMO 9287687
|
822 TEU | 2003 |
24.4
|
E |
| 2127 |
SAMSKIP INNOVATOR
IMO 9436214
|
803 TEU | 2011 |
24.5
|
E |
| 2128 |
MSC LENA F
IMO 9347762
|
916 TEU | 2006 |
24.5
|
E |
| 2129 |
PANDA 002
IMO 9328053
|
803 TEU | 2007 |
24.6
|
E |
| 2130 |
SPIRIT
IMO 9302255
|
809 TEU | 2005 |
24.7
|
E |
| 2131 |
VERONICA B
IMO 9436305
|
812 TEU | 2011 |
24.7
|
E |
| 2132 |
K-RIVER
IMO 9138355
|
700 TEU | 1997 |
24.8
|
E |
| 2133 |
ENCOUNTER
IMO 9255775
|
750 TEU | 2004 |
24.9
|
E |
| 2134 |
EMILIA
IMO 9197521
|
700 TEU | 2010 |
24.9
|
E |
| 2135 |
ALEXANDER
IMO 9347798
|
957 TEU | 2006 |
25.1
|
E |
| 2136 |
ENFORCER
IMO 9255737
|
750 TEU | 2003 |
25.2
|
E |
| 2137 |
ADMIRAL SUN
IMO 9437244
|
990 TEU | 2008 |
25.2
|
E |
| 2138 |
RANGER
IMO 9322542
|
803 TEU | 2005 |
25.2
|
E |
| 2139 |
AURORA
IMO 9234989
|
868 TEU | 2001 |
25.2
|
E |
| 2140 |
MACARENA B
IMO 9277400
|
822 TEU | 2003 |
25.2
|
E |
| 2141 |
CMA CGM NADOR
IMO 9396696
|
1,036 TEU | 2007 |
25.2
|
E |
| 2142 |
ELBSPRINTER
IMO 9349215
|
809 TEU | 2007 |
25.3
|
E |
| 2143 |
BF ESPERANZA
IMO 9252785
|
862 TEU | 2003 |
25.3
|
E |
| 2144 |
CONTSHIP IVY
IMO 9371402
|
925 TEU | 2007 |
25.4
|
E |
| 2145 |
MEDKON FUN
IMO 9308613
|
890 TEU | 2006 |
25.4
|
E |
| 2146 |
MAIKE D
IMO 9226372
|
660 TEU | 2000 |
25.4
|
E |
| 2147 |
SVEN-D
IMO 9302243
|
809 TEU | 2005 |
25.4
|
E |
| 2148 |
LILA CANADA
IMO 9332717
|
1,118 TEU | 2006 |
25.4
|
E |
| 2149 |
PONTA DO SOL
IMO 9141613
|
374 TEU | 1997 |
25.4
|
E |
| 2150 |
ELISABETH
IMO 9219862
|
658 TEU | 2000 |
25.5
|
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 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.