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 · 274 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 |
|---|---|---|---|---|---|
| 651 |
FWN SPIRIT
IMO 9735220
|
10,546 | 2017 |
11.8
|
C |
| 652 |
ALASKABORG
IMO 9466374
|
17,294 | 2012 |
11.8
|
C |
| 653 |
TANARO RIVER
IMO 9631929
|
7,600 | 2012 |
11.8
|
C |
| 654 |
SELVAAGSUND
IMO 9956862
|
8,534 | 2023 |
11.8
|
C |
| 655 |
IBRAHIM KONAN
IMO 9306328
|
8,107 | 2006 |
11.8
|
C |
| 656 |
VANCOUVERBORG
IMO 9213741
|
9,829 | 2001 |
11.8
|
C |
| 657 |
LADY SEMA
IMO 9233624
|
16,190 | 2001 |
11.8
|
C |
| 658 |
ARUBABORG
IMO 9466295
|
17,407 | 2010 |
11.8
|
C |
| 659 |
DIJKSGRACHT
IMO 9420772
|
17,381 | 2008 |
11.9
|
C |
| 660 |
ORION 7
IMO 9611101
|
6,041 | 2011 |
11.9
|
C |
| 661 |
ARKLOW ARROW
IMO 9851971
|
8,543 | 2021 |
11.9
|
C |
| 662 |
ARKLOW ARCHER
IMO 9851969
|
8,543 | 2020 |
11.9
|
C |
| 663 |
NOORDDIJK
IMO 9591820
|
10,953 | 2011 |
11.9
|
C |
| 664 |
EDENBORG
IMO 9463449
|
11,199 | 2010 |
12.0
|
C |
| 665 |
ERIEBORG
IMO 9463437
|
11,219 | 2009 |
12.0
|
C |
| 666 |
AMERICABORG
IMO 9365659
|
17,356 | 2007 |
12.0
|
C |
| 667 |
STARVIP
IMO 9326495
|
18,615 | 2007 |
12.0
|
C |
| 668 |
MITIQ
IMO 9081306
|
12,760 | 1995 |
12.0
|
C |
| 669 |
ARKLOW BANK
IMO 9638769
|
8,660 | 2014 |
12.0
|
C |
| 670 |
LONGWOOD
IMO 9504138
|
11,023 | 2011 |
12.0
|
C |
| 671 |
LAUNKALNE
IMO 9504114
|
11,048 | 2010 |
12.0
|
C |
| 672 |
AZOV FORWARD
IMO 9736896
|
12,630 | 2019 |
12.1
|
C |
| 673 |
HARTURA
IMO 9546447
|
12,223 | 2009 |
12.1
|
C |
| 674 |
FWN SUN
IMO 9721669
|
10,546 | 2016 |
12.1
|
C |
| 675 |
VIVIAN
IMO 9620358
|
7,636 | 2011 |
12.1
|
C |
| 676 |
YEBA
IMO 9045728
|
8,049 | 2004 |
12.1
|
C |
| 677 |
SELAM
IMO 9418286
|
8,300 | 2008 |
12.1
|
C |
| 678 |
ARKLOW ABBEY
IMO 9851933
|
8,543 | 2019 |
12.1
|
C |
| 679 |
ATLANTA
IMO 9513373
|
12,223 | 2009 |
12.1
|
C |
| 680 |
AL LUQTA
IMO 9294953
|
10,584 | 2004 |
12.1
|
C |
| 681 |
SAVA
IMO 9158082
|
9,752 | 1999 |
12.1
|
C |
| 682 |
STEVIE
IMO 9488035
|
12,767 | 2010 |
12.2
|
C |
| 683 |
TEVFIK BEY
IMO 9383326
|
8,317 | 2007 |
12.2
|
C |
| 684 |
ARKLOW ACCORD
IMO 9851945
|
8,543 | 2020 |
12.2
|
C |
| 685 |
SAIMAAGRACHT
IMO 9288069
|
23,741 | 2005 |
12.2
|
C |
| 686 |
ATLANTICBORG
IMO 9466350
|
17,294 | 2012 |
12.2
|
C |
| 687 |
EEMSBORG
IMO 9423748
|
11,287 | 2009 |
12.2
|
C |
| 688 |
FULMAR S
IMO 9370082
|
13,450 | 2007 |
12.2
|
C |
| 689 |
ARKLOW ARTIST
IMO 9851983
|
8,543 | 2021 |
12.3
|
C |
| 690 |
TRANSOSPREY
IMO 9213090
|
20,396 | 2003 |
12.3
|
C |
| 691 |
CHELSEA-2
IMO 9314442
|
5,457 | 2005 |
12.3
|
C |
| 692 |
VICTORIABORG
IMO 9234276
|
9,826 | 2001 |
12.3
|
C |
| 693 |
CELESTIA
IMO 9258997
|
10,326 | 2002 |
12.3
|
C |
| 694 |
CELIK 1
IMO 9430791
|
7,702 | 2007 |
12.3
|
C |
| 695 |
ESL AUSTRALIA
IMO 9365661
|
17,356 | 2007 |
12.3
|
C |
| 696 |
WHITE STAR
IMO 9381938
|
9,223 | 2007 |
12.3
|
C |
| 697 |
AQUIS PERLA
IMO 9161869
|
10,132 | 1997 |
12.4
|
C |
| 698 |
AZOV CONCORD
IMO 9387748
|
10,173 | 2008 |
12.4
|
C |
| 699 |
DENIZ AKAY
IMO 9349447
|
10,501 | 2010 |
12.4
|
C |
| 700 |
FIONA
IMO 9381419
|
8,109 | 2009 |
12.4
|
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.