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 · 275 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) | 763 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 763 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 659 | 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 |
|---|---|---|---|---|---|
| 451 |
PUFFIN S
IMO 9164811
|
20,738 | 1999 |
8.7
|
B |
| 452 |
DA JI
IMO 9768538
|
28,612 | 2016 |
8.7
|
B |
| 453 |
LADY JAMILA
IMO 9316983
|
33,427 | 2007 |
8.7
|
B |
| 454 |
GREY FOX
IMO 9594470
|
33,290 | 2011 |
8.7
|
B |
| 455 |
IRMA S
IMO 9385063
|
32,295 | 2008 |
8.7
|
B |
| 457 |
OBIRIX
IMO 9504267
|
9,848 | 2008 |
8.8
|
B |
| 456 |
STELLINA
IMO 9674933
|
26,051 | 2014 |
8.8
|
B |
| 458 |
BAHAR-K
IMO 8884555
|
8,815 | 1993 |
8.8
|
B |
| 460 |
AAL GUNSAN
IMO 9393589
|
25,747 | 2010 |
8.8
|
B |
| 459 |
ANGELINA
IMO 9168154
|
29,519 | 1997 |
8.8
|
B |
| 461 |
MAXIMA
IMO 9882061
|
14,345 | 2021 |
8.8
|
B |
| 462 |
BERKAY N
IMO 9524827
|
12,046 | 2008 |
8.8
|
B |
| 464 |
AAL KOBE
IMO 9498444
|
32,043 | 2012 |
8.8
|
B |
| 463 |
SIDER MOMPOX
IMO 9656553
|
14,703 | 2014 |
8.8
|
B |
| 465 |
AAL KEMBLA
IMO 9498353
|
31,000 | 2011 |
8.8
|
B |
| 466 |
LILAC ROLLER
IMO 9509712
|
33,200 | 2011 |
8.8
|
B |
| 467 |
XIA MEN ZE AN
IMO 9638628
|
27,264 | 2013 |
8.8
|
B |
| 468 |
LADY AYSE
IMO 9227871
|
16,239 | 2001 |
8.8
|
B |
| 469 |
QI LIN SONG
IMO 9416771
|
27,307 | 2010 |
8.9
|
B |
| 470 |
CENGIZ AMCA
IMO 9616096
|
11,051 | 2013 |
8.9
|
B |
| 471 |
ASH ADRIATIC
IMO 9614830
|
11,396 | 2012 |
8.9
|
B |
| 472 |
AAL PUSAN
IMO 9498389
|
32,279 | 2012 |
8.9
|
B |
| 474 |
UMS-ARCTURUS
IMO 9164794
|
20,731 | 1998 |
8.9
|
B |
| 473 |
LAKE ST. CLAIR
IMO 9315549
|
27,740 | 2005 |
8.9
|
B |
| 476 |
TRANSARCTIC
IMO 9674921
|
26,052 | 2013 |
8.9
|
B |
| 475 |
CHIPOLBROK PACIFIC
IMO 9710177
|
31,615 | 2015 |
8.9
|
B |
| 477 |
HAJE HALIMEH
IMO 8214889
|
13,286 | 1983 |
8.9
|
C |
| 478 |
TRANSOCEAN
IMO 9644251
|
22,983 | 2012 |
8.9
|
C |
| 480 |
MOHAMAD Y
IMO 8107000
|
11,990 | 1982 |
9.0
|
C |
| 479 |
AAL GENOA
IMO 9393553
|
25,733 | 2010 |
9.0
|
C |
| 481 |
MUAZZEZ K
IMO 9758961
|
12,549 | 2016 |
9.0
|
C |
| 483 |
NAGUAL
IMO 9380829
|
37,277 | 2005 |
9.0
|
C |
| 482 |
HAYRIYE ANA
IMO 9557953
|
8,383 | 2009 |
9.0
|
C |
| 484 |
AAL MELBOURNE
IMO 9498456
|
32,128 | 2013 |
9.0
|
C |
| 485 |
BOHWA AMOY
IMO 9300958
|
10,084 | 2005 |
9.0
|
C |
| 486 |
LADY SACHA
IMO 9299460
|
27,638 | 2004 |
9.0
|
C |
| 487 |
SANTORINI
IMO 9181493
|
24,175 | 1998 |
9.1
|
C |
| 489 |
MATSUMAE
IMO 9401336
|
13,801 | 2007 |
9.1
|
C |
| 488 |
BEATRIX
IMO 9419280
|
14,603 | 2009 |
9.1
|
C |
| 491 |
BULKER BEE 11
IMO 9507075
|
13,625 | 2011 |
9.2
|
C |
| 490 |
MEKELE
IMO 9617416
|
28,066 | 2010 |
9.2
|
C |
| 492 |
ARKLOW WIND
IMO 9818943
|
16,861 | 2019 |
9.2
|
C |
| 493 |
CORNELIA
IMO 9216597
|
24,516 | 2001 |
9.2
|
C |
| 494 |
LADY MERAL
IMO 9311311
|
32,131 | 2005 |
9.2
|
C |
| 495 |
ULUSOY-8
IMO 9458250
|
22,303 | 2008 |
9.2
|
C |
| 498 |
LIAN HUA SONG
IMO 9608829
|
27,412 | 2011 |
9.2
|
C |
| 497 |
PACIFIC VICTOR
IMO 9458456
|
28,309 | 2014 |
9.2
|
C |
| 496 |
LAKE ONTARIO
IMO 9283538
|
27,783 | 2004 |
9.2
|
C |
| 499 |
LAKE ERIE
IMO 9283540
|
27,781 | 2004 |
9.3
|
C |
| 500 |
GAZIBEY
IMO 9121912
|
17,786 | 1998 |
9.3
|
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.