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 | 1,466 | 5–10% | €400k–1,200k | — | vendor claim |
| Rotor sails (per unit) | 789 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 789 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 681 | 1–3% | €80k–250k | — | vendor claim |
| Bulbous bow reprofiling | 570 | 2–6% | €300k–900k | — | vendor claim |
| Shaft generator / PTO | 102 | 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 |
|---|---|---|---|---|---|
| 751 |
TRANSBAY
IMO 9187033
|
17,539 | 1999 |
12.8
|
D |
| 752 |
MANISA SOFIA
IMO 9428396
|
12,500 | 2011 |
12.8
|
D |
| 753 |
VIRGINIABORG
IMO 9234290
|
9,861 | 2001 |
12.8
|
D |
| 754 |
GOTLAND
IMO 9480136
|
17,409 | 2011 |
12.8
|
D |
| 755 |
JOY EXPRESS
IMO 9378254
|
9,693 | 2006 |
12.8
|
D |
| 756 |
ALAMOSBORG
IMO 9466348
|
17,294 | 2011 |
12.8
|
D |
| 757 |
ESL EUROPA
IMO 9333553
|
17,300 | 2007 |
12.8
|
D |
| 758 |
FREYJA W
IMO 9754422
|
12,245 | 2018 |
12.9
|
D |
| 759 |
FWN STAR
IMO 9721645
|
10,546 | 2015 |
12.9
|
D |
| 760 |
ARKLOW MUSE
IMO 9509487
|
15,008 | 2013 |
12.9
|
D |
| 761 |
ALBANYBORG
IMO 9466300
|
17,294 | 2010 |
12.9
|
D |
| 762 |
FRIEDRICH
IMO 9594298
|
8,690 | 2012 |
12.9
|
D |
| 763 |
FRIGG W
IMO 9754410
|
12,247 | 2017 |
12.9
|
D |
| 764 |
SAMPOGRACHT
IMO 9288071
|
23,741 | 2005 |
12.9
|
D |
| 765 |
MICK
IMO 9736183
|
12,234 | 2019 |
12.9
|
D |
| 766 |
QAMUTIK
IMO 9081289
|
12,760 | 1994 |
12.9
|
D |
| 767 |
COE LUISA
IMO 9435026
|
12,669 | 2008 |
13.0
|
D |
| 768 |
ARKLOW MOOR
IMO 9509475
|
14,998 | 2011 |
13.0
|
D |
| 769 |
EKMEN GLORY
IMO 9384186
|
8,555 | 2007 |
13.0
|
D |
| 770 |
AMIRA JOY
IMO 9558452
|
8,500 | 2009 |
13.0
|
D |
| 771 |
KEITH
IMO 9736195
|
12,234 | 2019 |
13.0
|
D |
| 772 |
VESTANHAV
IMO 9504152
|
9,927 | 2012 |
13.0
|
D |
| 773 |
GWEN
IMO 9402067
|
12,693 | 2008 |
13.0
|
D |
| 774 |
UAL HARRIER
IMO 9594303
|
8,690 | 2012 |
13.0
|
D |
| 775 |
BLUE CAPRAMAR
IMO 9641845
|
7,799 | 2012 |
13.0
|
D |
| 776 |
ZEA SERVANT
IMO 9741126
|
12,302 | 2018 |
13.1
|
D |
| 777 |
ORIS JUL
IMO 9116084
|
8,258 | 1996 |
13.1
|
D |
| 778 |
KELLY
IMO 9255622
|
9,857 | 2004 |
13.1
|
D |
| 779 |
NUNALIK
IMO 9466996
|
12,662 | 2009 |
13.1
|
D |
| 780 |
ANKA BLUE
IMO 9317808
|
8,181 | 2005 |
13.1
|
D |
| 781 |
MSC SHEILA F
IMO 9180968
|
16,211 | 1999 |
13.1
|
D |
| 782 |
MARIO C
IMO 9364526
|
13,422 | 2019 |
13.1
|
D |
| 783 |
CHARLIE
IMO 9736236
|
12,234 | 2022 |
13.1
|
D |
| 784 |
UAL HOUSTON
IMO 9542348
|
8,703 | 2012 |
13.1
|
D |
| 785 |
DZ YANTAI
IMO 9247405
|
17,539 | 2001 |
13.1
|
D |
| 786 |
ARKLOW BRAVE
IMO 9638800
|
8,661 | 2015 |
13.2
|
D |
| 787 |
ARKLOW MANOR
IMO 9440241
|
14,998 | 2009 |
13.2
|
D |
| 788 |
ARISTO
IMO 9229116
|
9,682 | 2000 |
13.2
|
D |
| 789 |
EKMEN SKY
IMO 9384174
|
8,523 | 2006 |
13.2
|
D |
| 790 |
FINN II
IMO 9534468
|
10,049 | 2012 |
13.2
|
D |
| 791 |
ONEGO CAPRI
IMO 9245275
|
10,273 | 2002 |
13.2
|
D |
| 792 |
SPAARNEGRACHT
IMO 9202558
|
21,402 | 2000 |
13.2
|
D |
| 793 |
UAL AFRICA
IMO 9529243
|
8,327 | 2011 |
13.3
|
D |
| 794 |
SUOMIGRACHT
IMO 9288057
|
23,660 | 2004 |
13.3
|
D |
| 795 |
AMSTELBORG
IMO 9333527
|
17,356 | 2006 |
13.3
|
D |
| 796 |
TIDE NAVIGATOR
IMO 9526083
|
8,284 | 2011 |
13.3
|
D |
| 797 |
ESL AMERICA
IMO 9347035
|
17,349 | 2006 |
13.3
|
D |
| 798 |
EKMEN STAR
IMO 9218193
|
7,580 | 2001 |
13.3
|
D |
| 799 |
AZORESBORG
IMO 9466051
|
17,407 | 2010 |
13.3
|
D |
| 800 |
SEAWAY K
IMO 9177777
|
13,347 | 1999 |
13.3
|
D |
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.