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
516 at D/E2,735 rated vessels · 242 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 | 1,466 | 5–10% | €400k–1,200k | — | vendor claim |
| Rotor sails (per unit) | 631 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 631 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Bulbous bow reprofiling | 572 | 2–6% | €300k–900k | — | vendor claim |
| Turbocharger cut-out | 530 | 1–3% | €80k–250k | — | vendor claim |
| Shaft generator / PTO | 101 | 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 |
|---|---|---|---|
| PACIFIC INTEGRITY · <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 |
|---|---|---|---|---|---|
| 652 |
HERMANA
IMO 9545948
|
12,463 | 2010 |
10.6
|
B |
| 651 |
CARTAGENA
IMO 9521863
|
18,809 | 2012 |
10.6
|
B |
| 653 |
AQUIS PERLA
IMO 9161869
|
10,132 | 1997 |
10.7
|
B |
| 654 |
AZORESBORG
IMO 9466051
|
17,407 | 2010 |
10.7
|
B |
| 655 |
GOLDEN SEA
IMO 9173355
|
15,962 | 1997 |
10.7
|
B |
| 656 |
LAUNKALNE
IMO 9504114
|
11,048 | 2010 |
10.7
|
B |
| 658 |
BALTIC CRYSTAL
IMO 9963487
|
6,458 | 2023 |
10.7
|
B |
| 657 |
TANARO RIVER
IMO 9631929
|
7,600 | 2012 |
10.7
|
B |
| 659 |
VELA
IMO 9149938
|
6,207 | 1996 |
10.7
|
B |
| 661 |
CHELSEA-1
IMO 9495612
|
6,135 | 2008 |
10.7
|
B |
| 660 |
FWN ATLANTIC
IMO 9931472
|
12,575 | 2023 |
10.7
|
B |
| 662 |
MSC SHEILA F
IMO 9180968
|
18,479 | 1999 |
10.7
|
B |
| 663 |
BBC KHERSON
IMO 9812016
|
12,435 | 2022 |
10.7
|
B |
| 664 |
ATA 2
IMO 9387669
|
6,300 | 2006 |
10.7
|
B |
| 667 |
BBC DENMARK
IMO 9605891
|
25,039 | 2012 |
10.8
|
B |
| 666 |
BBC SINGAPORE
IMO 9964431
|
13,418 | 2024 |
10.8
|
B |
| 665 |
ADAMOON
IMO 9521758
|
19,582 | 2011 |
10.8
|
B |
| 668 |
HAYRIYE ANA
IMO 9557953
|
8,383 | 2009 |
10.8
|
B |
| 669 |
BBC BREMEN
IMO 9971446
|
13,406 | 2025 |
10.8
|
B |
| 670 |
HARTURA
IMO 9546447
|
12,223 | 2009 |
10.8
|
B |
| 672 |
SIMONA
IMO 9437763
|
6,060 | 2007 |
10.8
|
B |
| 671 |
ONEGO ISLE
IMO 9626156
|
11,183 | 2012 |
10.8
|
B |
| 673 |
ESLEM
IMO 9148154
|
3,452 | 1997 |
10.8
|
B |
| 674 |
SCALA
IMO 9370628
|
6,826 | 2006 |
10.8
|
B |
| 675 |
LARISSA 1
IMO 9154268
|
17,064 | 1999 |
10.8
|
B |
| 676 |
ENAS H
IMO 9610822
|
10,034 | 2011 |
10.9
|
B |
| 677 |
ELBEBORG
IMO 9568249
|
12,004 | 2011 |
10.9
|
B |
| 679 |
VIVIAN
IMO 9620358
|
7,636 | 2011 |
10.9
|
B |
| 678 |
JORIX
IMO 9419802
|
8,191 | 2006 |
10.9
|
B |
| 680 |
ARUBABORG
IMO 9466295
|
17,407 | 2010 |
10.9
|
B |
| 681 |
HOSEI FORTUNE
IMO 9542879
|
12,916 | 2009 |
10.9
|
B |
| 682 |
K.DADAYLI
IMO 9513191
|
9,293 | 2009 |
10.9
|
B |
| 683 |
CENGIZ AMCA
IMO 9616096
|
11,051 | 2013 |
10.9
|
B |
| 685 |
BBC SANTIAGO
IMO 9964429
|
13,405 | 2024 |
10.9
|
B |
| 684 |
K HAK
IMO 9532848
|
12,611 | 2009 |
10.9
|
B |
| 686 |
SANDRA
IMO 9549669
|
13,549 | 2009 |
10.9
|
B |
| 687 |
EEBORG
IMO 9568328
|
11,901 | 2012 |
10.9
|
B |
| 688 |
BBC ROSTOV
IMO 9964443
|
12,422 | 2024 |
10.9
|
B |
| 689 |
BBC NORWAY
IMO 9593658
|
24,976 | 2012 |
11.0
|
B |
| 690 |
ERIEBORG
IMO 9463437
|
11,217 | 2009 |
11.0
|
B |
| 691 |
ISMAIL S
IMO 9546007
|
12,232 | 2011 |
11.0
|
B |
| 692 |
T-MED
IMO 9163142
|
6,830 | 1997 |
11.0
|
B |
| 693 |
COSKUNLAR 2
IMO 8943351
|
2,276 | 1998 |
11.0
|
B |
| 694 |
STARVIP
IMO 9326495
|
18,500 | 2007 |
11.0
|
B |
| 695 |
HAKKI AYKIN
IMO 9045730
|
6,962 | 2004 |
11.0
|
B |
| 697 |
BOHWA QUANZHOU
IMO 9311244
|
13,276 | 2004 |
11.0
|
B |
| 696 |
ALGRACE
IMO 9154270
|
17,064 | 1999 |
11.0
|
B |
| 699 |
BOZKURT
IMO 9171371
|
10,555 | 2000 |
11.0
|
B |
| 698 |
BBC FINLAND
IMO 9593684
|
24,983 | 2012 |
11.0
|
B |
| 700 |
ADELHEID BR
IMO 9387621
|
10,860 | 2006 |
11.1
|
B |
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.