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 · 223 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) | 752 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 752 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 648 | 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 |
|---|---|---|---|---|---|
| 551 |
OCEAN SKY
IMO 9354064
|
18,951 | 2006 |
10.2
|
C |
| 552 |
SOPTERIX
IMO 9645839
|
8,820 | 2012 |
10.2
|
C |
| 553 |
ARKLOW WOOD
IMO 9818967
|
16,861 | 2020 |
10.2
|
C |
| 554 |
WESER STAHL
IMO 9186687
|
47,257 | 1999 |
10.2
|
C |
| 555 |
BINNUR C
IMO 9261023
|
31,829 | 2003 |
10.2
|
C |
| 556 |
HOSEI SAKURA
IMO 9673197
|
16,949 | 2014 |
10.2
|
C |
| 557 |
SIGMA
IMO 9350537
|
10,131 | 2005 |
10.2
|
C |
| 558 |
FULDABORG
IMO 9559092
|
14,592 | 2012 |
10.3
|
C |
| 559 |
OCEAN DREAM
IMO 9519511
|
11,939 | 2009 |
10.3
|
C |
| 560 |
LADY HATICE
IMO 9413078
|
18,930 | 2009 |
10.3
|
C |
| 561 |
GEMINI CAPO
IMO 9662485
|
10,813 | 2012 |
10.3
|
C |
| 562 |
KAPITAN SHYRIAGIN
IMO 9137234
|
6,258 | 1999 |
10.3
|
C |
| 563 |
BUYUFIX
IMO 9538957
|
8,488 | 2010 |
10.3
|
C |
| 564 |
IMMENSITY
IMO 9171395
|
10,979 | 2002 |
10.3
|
C |
| 565 |
KUBROSLI Y
IMO 8000836
|
11,990 | 1981 |
10.3
|
C |
| 566 |
ORUBA
IMO 9430624
|
10,611 | 2007 |
10.4
|
C |
| 567 |
CARTAGENA
IMO 9521863
|
18,809 | 2012 |
10.4
|
C |
| 568 |
ARIF AMCA
IMO 9616084
|
11,086 | 2012 |
10.4
|
C |
| 569 |
VLIEBORG
IMO 9554781
|
11,914 | 2012 |
10.4
|
C |
| 570 |
MUHARREM DADAYLI
IMO 9558581
|
13,449 | 2010 |
10.4
|
C |
| 571 |
SELECTA
IMO 9424807
|
14,030 | 2007 |
10.4
|
C |
| 572 |
FWN ARCTIC
IMO 9931484
|
12,563 | 2023 |
10.4
|
C |
| 573 |
TIMBERLAND
IMO 9204790
|
20,406 | 2000 |
10.5
|
C |
| 574 |
FINNBORG
IMO 9419321
|
14,614 | 2011 |
10.5
|
C |
| 575 |
SIDER COLOMBIA
IMO 9656541
|
14,720 | 2013 |
10.5
|
C |
| 576 |
HELENE JULIE
IMO 9287314
|
13,988 | 2004 |
10.5
|
C |
| 577 |
ADAMOON
IMO 9521758
|
19,582 | 2011 |
10.6
|
C |
| 578 |
ALUNA
IMO 9590773
|
11,287 | 2011 |
10.6
|
C |
| 579 |
SANDRA
IMO 9549669
|
13,549 | 2009 |
10.6
|
C |
| 580 |
ELBEBORG
IMO 9568249
|
12,004 | 2011 |
10.6
|
C |
| 581 |
CAN S
IMO 9640889
|
13,559 | 2013 |
10.6
|
C |
| 582 |
LIDER HALIL
IMO 9462275
|
10,264 | 2020 |
10.6
|
C |
| 583 |
BEGONIA S
IMO 9445540
|
12,119 | 2007 |
10.7
|
C |
| 584 |
VOLGABORG
IMO 9631072
|
11,941 | 2013 |
10.7
|
C |
| 585 |
CSL FLEXVIK
IMO 9521825
|
18,003 | 2012 |
10.7
|
C |
| 586 |
EIRA
IMO 9225299
|
19,625 | 2001 |
10.7
|
C |
| 587 |
VERACRUZ
IMO 9521849
|
19,596 | 2012 |
10.7
|
C |
| 588 |
JORIX
IMO 9419802
|
8,191 | 2006 |
10.8
|
C |
| 589 |
ICDAS-5
IMO 9829916
|
15,621 | 2019 |
10.8
|
C |
| 590 |
ALPPILA
IMO 9381706
|
20,499 | 2011 |
10.8
|
C |
| 591 |
KEMET STAR
IMO 9154282
|
17,033 | 1999 |
10.8
|
C |
| 592 |
ELLA
IMO 9894105
|
9,268 | 2021 |
10.8
|
C |
| 593 |
HERMANA
IMO 9545948
|
12,463 | 2010 |
10.9
|
C |
| 594 |
BBC GEORGIA
IMO 9357224
|
12,797 | 2008 |
10.9
|
C |
| 595 |
TONAL
IMO 9576129
|
7,852 | 2010 |
10.9
|
C |
| 596 |
EXEBORG
IMO 9650482
|
11,950 | 2013 |
10.9
|
C |
| 597 |
ENAS H
IMO 9610822
|
10,034 | 2011 |
10.9
|
C |
| 598 |
ADAVEGA
IMO 9539339
|
12,427 | 2010 |
10.9
|
C |
| 599 |
WO LONG SONG
IMO 9416783
|
27,000 | 2010 |
10.9
|
C |
| 600 |
LEDA
IMO 9648178
|
6,171 | 2013 |
10.9
|
C |
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.