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 |
|---|---|---|---|---|---|
| 2001 |
RIX SPIRIT
IMO 9136204
|
4,084 | 1996 |
19.2
|
E |
| 2002 |
FRISIAN INO
IMO 9463877
|
2,570 | 2012 |
19.2
|
E |
| 2003 |
FOKKO UKENA
IMO 9375812
|
3,627 | 2007 |
19.2
|
E |
| 2004 |
RIX LAKE
IMO 9109043
|
3,400 | 1995 |
19.2
|
E |
| 2005 |
HAGLAND BOSS
IMO 9171058
|
3,694 | 1997 |
19.2
|
E |
| 2006 |
HAPPY STAR
IMO 9661259
|
18,062 | 2014 |
19.2
|
E |
| 2007 |
SARAH-B
IMO 9119622
|
2,300 | 1995 |
19.2
|
E |
| 2008 |
FRI PORSGRUNN
IMO 9196199
|
3,792 | 2000 |
19.2
|
E |
| 2009 |
WILSON ELBE
IMO 9060675
|
2,665 | 1993 |
19.2
|
E |
| 2010 |
FLUVIUS TAVY
IMO 9501710
|
4,200 | 2009 |
19.2
|
E |
| 2011 |
AMISIA
IMO 9361378
|
6,059 | 2008 |
19.2
|
E |
| 2012 |
CELTIC RAIDER
IMO 9361330
|
4,537 | 2007 |
19.2
|
E |
| 2013 |
ELENORA
IMO 9184421
|
4,023 | 2000 |
19.2
|
E |
| 2014 |
SPANACO PROGRESS
IMO 9306433
|
7,601 | 2007 |
19.2
|
E |
| 2015 |
THEBE
IMO 9199696
|
2,500 | 2000 |
19.2
|
E |
| 2016 |
WILSON HUSUM
IMO 9017379
|
4,219 | 1998 |
19.2
|
E |
| 2017 |
AURUM
IMO 9248552
|
16,558 | 2005 |
19.2
|
E |
| 2018 |
INCRA
IMO 9195858
|
5,050 | 2000 |
19.2
|
E |
| 2019 |
DANITA
IMO 9341108
|
7,018 | 2005 |
19.2
|
E |
| 2020 |
HAGLAND SAGA
IMO 9238404
|
4,530 | 2003 |
19.2
|
E |
| 2021 |
MAI LEHMANN
IMO 9196175
|
4,135 | 1999 |
19.3
|
E |
| 2022 |
BBC OPAL
IMO 9506758
|
14,288 | 2011 |
19.3
|
E |
| 2023 |
DIEZEBORG
IMO 9225586
|
8,819 | 2000 |
19.3
|
E |
| 2024 |
BBC BERGEN
IMO 9437153
|
8,000 | 2011 |
19.3
|
E |
| 2025 |
TITAN PEARL
IMO 9589217
|
6,522 | 2010 |
19.3
|
E |
| 2026 |
MEMNUNE K
IMO 9576703
|
4,487 | 2010 |
19.3
|
E |
| 2027 |
WILSON HANSA
IMO 9583859
|
4,616 | 2013 |
19.3
|
E |
| 2028 |
SELENE PRAHM
IMO 9100059
|
2,422 | 1994 |
19.3
|
E |
| 2029 |
HAMMER
IMO 9168441
|
4,902 | 1998 |
19.3
|
E |
| 2030 |
KRISLIN
IMO 9312377
|
5,208 | 2005 |
19.3
|
E |
| 2031 |
SAFFET AGA
IMO 9376282
|
3,738 | 2007 |
19.3
|
E |
| 2032 |
MIA MARIA
IMO 9518218
|
3,748 | 2012 |
19.3
|
E |
| 2033 |
MAUREEN S
IMO 8707783
|
3,999 | 1987 |
19.3
|
E |
| 2034 |
ABERDEEN
IMO 9313723
|
3,614 | 2009 |
19.3
|
E |
| 2035 |
ARINDA JOY
IMO 9512422
|
8,072 | 2009 |
19.4
|
E |
| 2036 |
WILSON ODRA
IMO 9177882
|
2,455 | 1999 |
19.4
|
E |
| 2037 |
ANTWERP
IMO 9375848
|
3,600 | 2008 |
19.4
|
E |
| 2038 |
DREAM S
IMO 9199385
|
4,629 | 2000 |
19.4
|
E |
| 2039 |
NYSTEIN
IMO 9137284
|
2,489 | 1995 |
19.4
|
E |
| 2040 |
ELENA L
IMO 9195901
|
4,956 | 2001 |
19.4
|
E |
| 2041 |
KATARIINA
IMO 9467213
|
4,114 | 2011 |
19.4
|
E |
| 2042 |
OSTERBOTTEN
IMO 9247120
|
5,880 | 2002 |
19.5
|
E |
| 2043 |
INANDI
IMO 8332100
|
3,465 | 1984 |
19.5
|
E |
| 2044 |
COE MIEKE
IMO 8912481
|
2,172 | 1990 |
19.5
|
E |
| 2045 |
MAJ RICHARD WINTERS
IMO 9210309
|
7,725 | 2000 |
19.5
|
E |
| 2046 |
BAL BULK
IMO 8912493
|
2,165 | 1990 |
19.5
|
E |
| 2047 |
LUISA
IMO 9471616
|
17,113 | 2008 |
19.6
|
E |
| 2048 |
BENIGANE
IMO 9455600
|
11,818 | 2008 |
19.6
|
E |
| 2049 |
WILSON WISLA
IMO 9156175
|
2,517 | 1996 |
19.6
|
E |
| 2050 |
MUSTAFA YAGCI
IMO 9314545
|
5,874 | 2006 |
19.6
|
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.