General Cargo 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
509 at D/E2,735 rated vessels · 271 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 |
|---|---|---|---|---|---|
| Propeller redesign / replacement | 1,462 | 5–10% | €400k–1,200k | — | vendor claim |
| Rotor sails (per unit) | 756 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 756 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 652 | 1–3% | €80k–250k | — | vendor claim |
| Bulbous bow reprofiling | 566 | 2–6% | €300k–900k | — | vendor claim |
| Shaft generator / PTO | 97 | 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 |
|---|---|---|---|
| KOKODA CHIEF · <25k | E | 15y | 2026 |
| CLAUDIO CUCCO · <25k | E | 40y | 2026 |
| GINO CUCCO · <25k | E | 39y | 2026 |
| GIUSEPPE CUCCO · <25k | E | 49y | 2026 |
| LADY OF CHICHESTER · <25k | E | 56y | 2026 |
| # | Vessel | Size (DWT) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 1851 |
ASLI ELIF
IMO 9349021
|
3,701 | 2005 |
18.0
|
D |
| 1852 |
TC GLORY
IMO 9125700
|
4,657 | 1996 |
18.0
|
D |
| 1853 |
WILSON BRAKE
IMO 9150511
|
3,863 | 1997 |
18.0
|
D |
| 1854 |
MARIT
IMO 9364148
|
7,092 | 2008 |
18.0
|
D |
| 1855 |
SNP STAR
IMO 9345362
|
3,987 | 2006 |
18.0
|
D |
| 1856 |
GLEN
IMO 9125061
|
4,861 | 1996 |
18.0
|
D |
| 1857 |
WILSON LEER
IMO 9150482
|
3,695 | 1996 |
18.0
|
D |
| 1858 |
RIX ONYX
IMO 9508639
|
4,742 | 2010 |
18.0
|
D |
| 1859 |
KAARI
IMO 9434761
|
7,100 | 2009 |
18.0
|
D |
| 1860 |
JELENA
IMO 9519042
|
5,400 | 2012 |
18.0
|
D |
| 1861 |
SILVA
IMO 9237010
|
5,464 | 2001 |
18.0
|
D |
| 1862 |
WILSON BREMEN
IMO 9014717
|
3,932 | 1992 |
18.0
|
D |
| 1863 |
SIEGFRIED LEHMANN
IMO 9325142
|
4,508 | 2005 |
18.0
|
D |
| 1864 |
WILSON GIJON
IMO 9056038
|
3,689 | 1993 |
18.0
|
D |
| 1865 |
WILSON HOLLA
IMO 9229130
|
4,338 | 2002 |
18.0
|
D |
| 1866 |
MANISA GRETA
IMO 9391024
|
8,419 | 2007 |
18.0
|
D |
| 1867 |
MAINTAL
IMO 9280677
|
3,806 | 2006 |
18.1
|
D |
| 1868 |
WILSON SAIMAA
IMO 9313694
|
2,634 | 2005 |
18.1
|
D |
| 1869 |
ERNST HAGEDORN
IMO 9137301
|
2,590 | 1996 |
18.1
|
D |
| 1870 |
BLUE TUNE
IMO 9491927
|
5,262 | 2010 |
18.1
|
D |
| 1871 |
WILSON GAETA
IMO 9171096
|
3,894 | 1998 |
18.1
|
D |
| 1872 |
MERITA
IMO 8422034
|
5,018 | 1985 |
18.1
|
D |
| 1873 |
TANGO RIO
IMO 9205718
|
9,231 | 2000 |
18.1
|
D |
| 1874 |
GULIZAR ANA
IMO 9335355
|
3,300 | 2005 |
18.1
|
D |
| 1875 |
ALESSANDRA LEHMANN
IMO 9290684
|
4,508 | 2004 |
18.1
|
D |
| 1876 |
BBC EAGLE
IMO 9407574
|
10,340 | 2008 |
18.1
|
D |
| 1877 |
TAGUS RIVER
IMO 9368596
|
6,354 | 2007 |
18.1
|
D |
| 1878 |
SEA SPRINTER
IMO 9364019
|
6,355 | 2007 |
18.1
|
D |
| 1879 |
LADY NURAY
IMO 9038373
|
5,357 | 1992 |
18.2
|
D |
| 1880 |
WILSON LUGA
IMO 9156187
|
2,518 | 1996 |
18.2
|
D |
| 1881 |
ARKLOW VENTURE
IMO 9772589
|
5,164 | 2017 |
18.2
|
D |
| 1882 |
HAGLAND CHIEF
IMO 9521344
|
4,450 | 2012 |
18.2
|
D |
| 1883 |
NORDICA HAV
IMO 8324684
|
2,316 | 1983 |
18.2
|
D |
| 1884 |
LADY MARY
IMO 9375836
|
3,612 | 2008 |
18.2
|
D |
| 1885 |
CELINE
IMO 9508653
|
5,463 | 2011 |
18.2
|
D |
| 1886 |
SEA LEADER
IMO 9363998
|
6,355 | 2007 |
18.2
|
D |
| 1887 |
RIX GULF
IMO 9396701
|
5,236 | 2008 |
18.2
|
D |
| 1888 |
BREB COURAGEOUS
IMO 9421178
|
7,801 | 2009 |
18.2
|
D |
| 1889 |
KARMEL
IMO 9290672
|
4,516 | 2004 |
18.3
|
D |
| 1890 |
PALEISGRACHT
IMO 9448346
|
19,496 | 2011 |
18.3
|
D |
| 1891 |
HALLAND
IMO 9436238
|
6,805 | 2008 |
18.3
|
D |
| 1892 |
VASTERBOTTEN
IMO 9436226
|
6,805 | 2008 |
18.3
|
D |
| 1893 |
SUN BIRD
IMO 9415636
|
4,410 | 2009 |
18.3
|
D |
| 1894 |
UNIWIND
IMO 8024155
|
4,500 | 1981 |
18.3
|
D |
| 1895 |
VON ADLER
IMO 9184433
|
4,023 | 2001 |
18.3
|
D |
| 1896 |
WILSON LOVIISA
IMO 9213600
|
2,620 | 2005 |
18.3
|
D |
| 1897 |
HAPPY ROVER
IMO 9139309
|
15,443 | 1997 |
18.3
|
D |
| 1898 |
CALAMAR
IMO 9528512
|
4,030 | 2011 |
18.3
|
D |
| 1899 |
SARDES
IMO 9374387
|
7,515 | 2006 |
18.3
|
D |
| 1900 |
CINDY
IMO 9004499
|
9,597 | 1992 |
18.3
|
D |
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.