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 · 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 |
|---|---|---|---|---|---|
| 1951 |
BF LETICIA
IMO 9266542
|
862 TEU | 2003 |
23.3
|
E |
| 1952 |
KRISTIN SCHEPERS
IMO 9404089
|
803 TEU | 2008 |
23.3
|
E |
| 1953 |
MED CERKEZKOY
IMO 9147215
|
1,076 TEU | 1998 |
23.3
|
E |
| 1954 |
ELBCARRIER
IMO 9388510
|
974 TEU | 2007 |
23.3
|
E |
| 1955 |
MSC TALIA F
IMO 9308601
|
916 TEU | 2005 |
23.3
|
E |
| 1956 |
NCL IKORNNES
IMO 9347798
|
957 TEU | 2006 |
23.4
|
E |
| 1957 |
ALEXANDRA A
IMO 9356684
|
1,000 TEU | 2011 |
23.4
|
E |
| 1958 |
MSC LUNA F
IMO 9308625
|
916 TEU | 2006 |
23.6
|
E |
| 1959 |
BF ESPERANZA
IMO 9252785
|
862 TEU | 2003 |
23.7
|
E |
| 1960 |
CONTSHIP MED
IMO 9306249
|
1,100 TEU | 2004 |
23.7
|
E |
| 1961 |
BF CARODA
IMO 9297618
|
862 TEU | 2004 |
23.8
|
E |
| 1962 |
ADMIRAL SUN
IMO 9437244
|
990 TEU | 2008 |
23.8
|
E |
| 1963 |
ELBSPRINTER
IMO 9349215
|
809 TEU | 2007 |
23.8
|
E |
| 1964 |
ANITA A
IMO 9532343
|
704 TEU | 2009 |
23.9
|
E |
| 1965 |
WEC VAN EYCK
IMO 9365984
|
809 TEU | 2009 |
23.9
|
E |
| 1966 |
WEC VAN RUYSDAEL
IMO 9287792
|
812 TEU | 2004 |
23.9
|
E |
| 1967 |
SAMSKIP EXPRESS
IMO 9323479
|
803 TEU | 2006 |
23.9
|
E |
| 1968 |
INGA A
IMO 9020352
|
1,139 TEU | 1993 |
23.9
|
E |
| 1969 |
X-PRESS AGILITY
IMO 9483671
|
1,036 TEU | 2010 |
23.9
|
E |
| 1970 |
MSC OLGA F
IMO 9336359
|
1,118 TEU | 2006 |
23.9
|
E |
| 1971 |
LINDA
IMO 9354325
|
907 TEU | 2007 |
24.0
|
E |
| 1972 |
WEC MAJORELLE
IMO 9134153
|
700 TEU | 1996 |
24.0
|
E |
| 1973 |
PANDA 002
IMO 9328053
|
803 TEU | 2007 |
24.1
|
E |
| 1974 |
MAIKE D
IMO 9226372
|
660 TEU | 2000 |
24.1
|
E |
| 1975 |
CANDELARIA B
IMO 9277395
|
822 TEU | 2003 |
24.1
|
E |
| 1976 |
MSC ANNE F
IMO 9347803
|
916 TEU | 2007 |
24.1
|
E |
| 1977 |
EF AVA
IMO 9389306
|
698 TEU | 2008 |
24.2
|
E |
| 1978 |
BERNHARD SCHEPERS
IMO 9492505
|
1,036 TEU | 2011 |
24.2
|
E |
| 1979 |
HELGAFELL
IMO 9306017
|
909 TEU | 2005 |
24.3
|
E |
| 1980 |
CHRISTINA
IMO 9429211
|
877 TEU | 2010 |
24.3
|
E |
| 1981 |
WEC BOUMEESTER
IMO 9150080
|
624 TEU | 1997 |
24.4
|
E |
| 1982 |
CONTSHIP RAY
IMO 9388338
|
1,080 TEU | 2008 |
24.5
|
E |
| 1983 |
SOLONG
IMO 9322554
|
803 TEU | 2005 |
24.5
|
E |
| 1984 |
JORK RULER
IMO 9328027
|
803 TEU | 2006 |
24.6
|
E |
| 1985 |
SAMSKIP INNOVATOR
IMO 9436214
|
803 TEU | 2011 |
24.6
|
E |
| 1986 |
MEANDI
IMO 9328039
|
803 TEU | 2006 |
24.6
|
E |
| 1987 |
HAMBURG TRADER
IMO 9316098
|
1,118 TEU | 2005 |
24.7
|
E |
| 1988 |
X-PRESS GODAVARI
IMO 9353735
|
917 TEU | 2008 |
24.8
|
E |
| 1989 |
NINA A
IMO 9440605
|
698 TEU | 2008 |
24.8
|
E |
| 1990 |
MSC NINA F
IMO 9308584
|
916 TEU | 2005 |
24.8
|
E |
| 1991 |
NORDIC HAMBURG
IMO 9514755
|
1,036 TEU | 2010 |
24.9
|
E |
| 1992 |
DREAM
IMO 9322578
|
804 TEU | 2006 |
24.9
|
E |
| 1993 |
VEGA VELA
IMO 9306823
|
1,118 TEU | 2005 |
24.9
|
E |
| 1994 |
CONTSHIP FUN
IMO 9308613
|
890 TEU | 2006 |
24.9
|
E |
| 1995 |
LUCY BORCHARD
IMO 9390824
|
228 TEU | 2006 |
24.9
|
E |
| 1996 |
CONTSHIP JOY
IMO 9349174
|
925 TEU | 2007 |
24.9
|
E |
| 1997 |
GRETA
IMO 9404821
|
698 TEU | 2008 |
24.9
|
E |
| 1998 |
FREYA
IMO 9219874
|
658 TEU | 2000 |
25.0
|
E |
| 1999 |
BF PERCH
IMO 9437218
|
990 TEU | 2007 |
25.0
|
E |
| 2000 |
PAFILIA
IMO 9322853
|
712 TEU | 2006 |
25.1
|
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.