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 2024. 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 · 269 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) | 766 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 766 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 662 | 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 |
|---|---|---|---|---|---|
| 801 |
KWINTEBANK
IMO 9234288
|
9,857 | 2002 |
13.3
|
D |
| 802 |
SNOEKGRACHT
IMO 9202546
|
21,404 | 2000 |
13.4
|
D |
| 803 |
FWN SKY
IMO 9721633
|
10,521 | 2015 |
13.4
|
D |
| 804 |
O7 VEGA S
IMO 9484247
|
9,862 | 2011 |
13.4
|
D |
| 805 |
INDUSTRIAL SWIFT
IMO 9741152
|
12,337 | 2017 |
13.4
|
D |
| 806 |
YM AMAZON
IMO 9622758
|
10,978 | 2013 |
13.4
|
D |
| 807 |
ONEGO MERCHANT
IMO 9238363
|
8,930 | 2002 |
13.4
|
D |
| 808 |
ONEGO ELBE
IMO 9438573
|
11,087 | 2008 |
13.4
|
D |
| 809 |
DOLFIJNGRACHT
IMO 9420825
|
17,967 | 2009 |
13.4
|
D |
| 810 |
ARA ROTTERDAM
IMO 9549566
|
13,524 | 2012 |
13.4
|
D |
| 811 |
SPIEGELGRACHT
IMO 9197911
|
21,402 | 2000 |
13.4
|
D |
| 812 |
CONDOR MAGALLANES
IMO 9539365
|
19,024 | 2011 |
13.4
|
D |
| 813 |
SIF W
IMO 9754434
|
12,237 | 2018 |
13.4
|
D |
| 814 |
MANISA AMELIA
IMO 9933456
|
8,892 | 2023 |
13.4
|
D |
| 815 |
URA
IMO 9436252
|
7,502 | 2009 |
13.4
|
D |
| 816 |
M/V MEGAN
IMO 8913320
|
12,231 | 1993 |
13.4
|
D |
| 817 |
SIDER LONDON
IMO 9528706
|
14,121 | 2009 |
13.4
|
D |
| 818 |
HAPPY DYNAMIC
IMO 9551973
|
18,043 | 2011 |
13.4
|
D |
| 819 |
INDUSTRIAL MOMENTUM
IMO 9534432
|
10,049 | 2010 |
13.4
|
D |
| 820 |
YANGZE VENUS
IMO 9428401
|
12,094 | 2013 |
13.5
|
D |
| 821 |
ESEN
IMO 9235488
|
8,959 | 2000 |
13.5
|
D |
| 822 |
NASSAUBORG
IMO 9248564
|
20,530 | 2006 |
13.5
|
D |
| 823 |
SIVUMUT
IMO 9501253
|
12,747 | 2010 |
13.5
|
D |
| 824 |
GARIP BABA
IMO 9564970
|
8,639 | 2010 |
13.5
|
D |
| 825 |
HAPPY DELTA
IMO 9551935
|
18,276 | 2011 |
13.5
|
D |
| 826 |
KFS MERYEM ANA
IMO 9575888
|
10,700 | 2010 |
13.5
|
D |
| 827 |
LADY RUBINA
IMO 9370109
|
13,464 | 2008 |
13.5
|
D |
| 828 |
BBC VOLGA
IMO 9436329
|
17,303 | 2009 |
13.6
|
D |
| 829 |
YI HUI ZHI HAI
IMO 9628697
|
12,313 | 2013 |
13.6
|
D |
| 830 |
SINGELGRACHT
IMO 9197375
|
21,311 | 2000 |
13.6
|
D |
| 831 |
BBC PLATA
IMO 9291975
|
12,837 | 2005 |
13.6
|
D |
| 832 |
ARKLOW MARSH
IMO 9440253
|
14,998 | 2010 |
13.6
|
D |
| 833 |
ANNABELLA
IMO 8919788
|
11,117 | 1991 |
13.6
|
D |
| 834 |
SUAVE
IMO 9306299
|
8,708 | 2005 |
13.6
|
D |
| 835 |
INDUSTRIAL URSULA
IMO 9435117
|
12,743 | 2008 |
13.6
|
D |
| 836 |
SLOTERGRACHT
IMO 9197947
|
21,402 | 2000 |
13.6
|
D |
| 837 |
ARKLOW BREEZE
IMO 9638812
|
8,661 | 2015 |
13.6
|
D |
| 838 |
STATENGRACHT
IMO 9288045
|
21,253 | 2004 |
13.6
|
D |
| 839 |
TRANSUND
IMO 9213088
|
16,612 | 2002 |
13.7
|
D |
| 840 |
ZEYCAN ANA
IMO 9564994
|
8,649 | 2010 |
13.7
|
D |
| 841 |
TEMA
IMO 9428786
|
8,270 | 2007 |
13.7
|
D |
| 842 |
BBC MAINE
IMO 9357200
|
12,792 | 2007 |
13.7
|
D |
| 843 |
LADY LUCIANA
IMO 9320520
|
11,576 | 2005 |
13.7
|
D |
| 844 |
RONNIE
IMO 9736224
|
12,234 | 2021 |
13.7
|
D |
| 845 |
SH EXPRESS
IMO 9085443
|
8,177 | 1994 |
13.7
|
D |
| 846 |
BOHWA PIONEER
IMO 9565869
|
8,767 | 2010 |
13.7
|
D |
| 847 |
LADY SHAM
IMO 9171383
|
9,802 | 2001 |
13.7
|
D |
| 848 |
HAPPY DIAMOND
IMO 9551947
|
18,148 | 2011 |
13.7
|
D |
| 849 |
IJZERBORG
IMO 9456733
|
12,032 | 2010 |
13.7
|
D |
| 850 |
NACC ALICUDI
IMO 9586435
|
7,694 | 2011 |
13.8
|
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 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.