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) | 772 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 772 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 668 | 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 |
|---|---|---|---|---|---|
| 501 |
ATLANTIC SPIRIT II
IMO 9594509
|
33,200 | 2012 |
9.3
|
C |
| 502 |
BASEL ATHENA
IMO 9164809
|
20,730 | 1999 |
9.3
|
C |
| 503 |
FISHER
IMO 9177791
|
12,974 | 1999 |
9.3
|
C |
| 504 |
TRANSEUROPE
IMO 9586588
|
25,000 | 2010 |
9.3
|
C |
| 505 |
FIVELBORG
IMO 9419307
|
14,575 | 2010 |
9.4
|
C |
| 506 |
CS FLOURISH
IMO 9438365
|
34,022 | 2010 |
9.4
|
C |
| 507 |
BLAIR MCKEIL
IMO 9546045
|
14,906 | 2010 |
9.4
|
C |
| 508 |
ARKLOW WAVE
IMO 9818931
|
16,861 | 2018 |
9.5
|
C |
| 509 |
XING FU SONG
IMO 9608958
|
27,292 | 2012 |
9.5
|
C |
| 510 |
BC RAEDA
IMO 9487598
|
24,959 | 2011 |
9.5
|
C |
| 511 |
ARKLOW WILLOW
IMO 9818955
|
16,861 | 2019 |
9.5
|
C |
| 512 |
PATAGONMAN
IMO 9521851
|
18,858 | 2012 |
9.6
|
C |
| 513 |
AAL SINGAPORE
IMO 9498365
|
32,134 | 2011 |
9.6
|
C |
| 514 |
APHRODITE I
IMO 9372468
|
10,353 | 2006 |
9.6
|
C |
| 515 |
NORDIC MALMOE
IMO 9602679
|
35,843 | 2012 |
9.6
|
C |
| 516 |
NORD LOTUS
IMO 9742390
|
16,963 | 2015 |
9.6
|
C |
| 517 |
BULKER BEE 10
IMO 9507087
|
13,784 | 2010 |
9.6
|
C |
| 518 |
DA CUI YUN
IMO 9451329
|
28,341 | 2011 |
9.6
|
C |
| 519 |
EKMEN ROYAL
IMO 9165865
|
10,334 | 2005 |
9.6
|
C |
| 521 |
MU DAN SONG
IMO 9608831
|
27,411 | 2012 |
9.6
|
C |
| 520 |
TOI CHALLENGER
IMO 9151515
|
21,146 | 1997 |
9.6
|
C |
| 522 |
SAPIENZA
IMO 9413066
|
18,917 | 2009 |
9.7
|
C |
| 523 |
ADAMAR
IMO 9515280
|
17,660 | 2009 |
9.7
|
C |
| 524 |
COMPADRE
IMO 9506100
|
23,003 | 2009 |
9.7
|
C |
| 525 |
YM SAMSUN
IMO 9584982
|
8,716 | 2011 |
9.7
|
C |
| 526 |
TIBERBORG
IMO 9546473
|
21,301 | 2013 |
9.7
|
C |
| 528 |
KING JOY
IMO 9537472
|
16,807 | 2009 |
9.7
|
C |
| 527 |
ROYAL II
IMO 9355109
|
13,721 | 2007 |
9.7
|
C |
| 529 |
HOPTERIX
IMO 9645841
|
8,813 | 2012 |
9.8
|
C |
| 530 |
MATTEO BR
IMO 9556844
|
25,000 | 2010 |
9.8
|
C |
| 531 |
K.DADAYLI
IMO 9513191
|
9,293 | 2009 |
9.8
|
C |
| 532 |
HANA H
IMO 9143855
|
8,104 | 1998 |
9.8
|
C |
| 533 |
BAHRI DIRIYAH
IMO 9498482
|
32,241 | 2014 |
9.8
|
C |
| 534 |
FWN ATLANTIC
IMO 9931472
|
12,575 | 2023 |
9.8
|
C |
| 535 |
GOLDEN BIRD
IMO 8517580
|
12,342 | 1986 |
9.9
|
C |
| 536 |
SOPHIA I
IMO 9546007
|
12,952 | 2011 |
9.9
|
C |
| 538 |
DANILA BAGROV
IMO 9458420
|
28,309 | 2012 |
9.9
|
C |
| 537 |
FRASERBORG
IMO 9419319
|
14,583 | 2011 |
9.9
|
C |
| 539 |
FENG HUANG SONG
IMO 9416757
|
27,300 | 2009 |
9.9
|
C |
| 540 |
TAAGBORG
IMO 9546461
|
21,338 | 2013 |
10.0
|
C |
| 541 |
FLEVOBORG
IMO 9419292
|
14,603 | 2010 |
10.0
|
C |
| 542 |
CONDOR BILBAO
IMO 9473250
|
17,287 | 2012 |
10.0
|
C |
| 543 |
SIYA
IMO 9442108
|
10,475 | 2007 |
10.1
|
C |
| 545 |
ANNETTA
IMO 9396543
|
11,732 | 2007 |
10.1
|
C |
| 544 |
PEACE
IMO 9553983
|
16,817 | 2012 |
10.1
|
C |
| 548 |
MIKAWA
IMO 9354208
|
14,078 | 2006 |
10.1
|
C |
| 547 |
ADAROSE
IMO 9392107
|
12,497 | 2009 |
10.1
|
C |
| 546 |
ADAPEARL
IMO 9539432
|
12,427 | 2011 |
10.1
|
C |
| 549 |
SIENNA
IMO 9353022
|
8,163 | 2005 |
10.1
|
C |
| 550 |
ARIANNA
IMO 9406702
|
11,731 | 2007 |
10.1
|
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.