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 |
|---|---|---|---|---|---|
| 801 |
AAL DAMPIER
IMO 9521540
|
18,707 | 2011 |
12.1
|
B |
| 802 |
ABILITY
IMO 9145645
|
17,440 | 1998 |
12.1
|
B |
| 803 |
WHITE STAR
IMO 9381938
|
9,223 | 2007 |
12.1
|
B |
| 804 |
ARKLOW ABBEY
IMO 9851933
|
8,543 | 2019 |
12.1
|
B |
| 805 |
SELVAAGSUND
IMO 9956862
|
8,534 | 2023 |
12.1
|
B |
| 806 |
ARKLOW ARCHER
IMO 9851969
|
8,543 | 2020 |
12.1
|
B |
| 808 |
ZEA SERVANT
IMO 9741126
|
12,302 | 2018 |
12.1
|
B |
| 807 |
ESL EUROPA
IMO 9333553
|
17,300 | 2007 |
12.1
|
B |
| 809 |
ECO TREASURE
IMO 9938690
|
9,072 | 2024 |
12.1
|
B |
| 810 |
PINDO
IMO 9504138
|
11,023 | 2011 |
12.1
|
B |
| 811 |
EKMEN TRANS
IMO 9204348
|
6,687 | 1999 |
12.1
|
B |
| 812 |
SPIKEN
IMO 9988504
|
5,080 | 2024 |
12.2
|
B |
| 813 |
ESL AMERICA
IMO 9347035
|
17,349 | 2006 |
12.2
|
B |
| 815 |
ARKLOW BEACON
IMO 9638795
|
8,662 | 2014 |
12.2
|
B |
| 814 |
DENIZ AKAY
IMO 9349447
|
10,501 | 2010 |
12.2
|
B |
| 816 |
KLARA
IMO 9115896
|
3,270 | 1995 |
12.2
|
B |
| 817 |
MARIO C
IMO 9364526
|
13,422 | 2019 |
12.2
|
B |
| 819 |
ARKLOW MEADOW
IMO 9440277
|
14,998 | 2010 |
12.2
|
B |
| 818 |
BOHA WITTENBERGEN
IMO 9014676
|
3,600 | 1992 |
12.2
|
B |
| 820 |
BBC TOKYO
IMO 9971434
|
13,418 | 2025 |
12.2
|
B |
| 821 |
TRIO CAN BERAT
IMO 8922254
|
4,245 | 1992 |
12.2
|
B |
| 822 |
EVA
IMO 9435105
|
12,764 | 2008 |
12.2
|
B |
| 823 |
OCEAN FORCE
IMO 8821814
|
12,150 | 1990 |
12.2
|
B |
| 825 |
ARNEBORG
IMO 9333539
|
17,356 | 2006 |
12.3
|
B |
| 824 |
AYADA
IMO 9268863
|
7,020 | 2005 |
12.3
|
B |
| 826 |
EMS LIBERTY
IMO 1022299
|
4,700 | 2024 |
12.3
|
B |
| 827 |
SABAHAT SONAY
IMO 9370525
|
14,888 | 2007 |
12.3
|
B |
| 828 |
TOI CHALLENGER
IMO 9151515
|
21,146 | 1998 |
12.3
|
B |
| 829 |
KAIE
IMO 9504102
|
11,198 | 2010 |
12.3
|
B |
| 830 |
YM AMAZON
IMO 9622758
|
11,500 | 2013 |
12.3
|
B |
| 831 |
BOLTEN PANORAMA
IMO 9495583
|
26,449 | 2012 |
12.3
|
B |
| 833 |
TOYA
IMO 9368106
|
3,385 | 2005 |
12.3
|
B |
| 832 |
KSL AMARA
IMO 9644744
|
13,077 | 2013 |
12.3
|
B |
| 834 |
ALASKABORG
IMO 9466374
|
17,294 | 2012 |
12.3
|
B |
| 836 |
GOLDEN LION
IMO 9363974
|
6,315 | 2006 |
12.3
|
B |
| 835 |
KEITH
IMO 9736195
|
12,234 | 2019 |
12.3
|
B |
| 837 |
AYSTAR
IMO 9257204
|
3,276 | 2001 |
12.3
|
B |
| 838 |
SUOMIGRACHT
IMO 9288057
|
23,661 | 2004 |
12.3
|
B |
| 841 |
VESTANHAV
IMO 9504152
|
10,089 | 2012 |
12.3
|
B |
| 840 |
EBROBORG
IMO 9463451
|
11,197 | 2010 |
12.3
|
B |
| 839 |
DA ZHI
IMO 9608439
|
29,495 | 2014 |
12.3
|
B |
| 842 |
TQ MERSIN
IMO 1052270
|
12,060 | 2008 |
12.4
|
B |
| 844 |
ARKLOW ARROW
IMO 9851971
|
8,543 | 2021 |
12.4
|
B |
| 843 |
ANDESBORG
IMO 9466324
|
17,294 | 2011 |
12.4
|
B |
| 846 |
LADY LEYLA
IMO 9106986
|
11,366 | 1995 |
12.4
|
B |
| 845 |
ADALADY
IMO 9664160
|
13,559 | 2013 |
12.4
|
B |
| 847 |
ECO TITAN
IMO 9933793
|
9,000 | 2023 |
12.4
|
B |
| 849 |
FWN SUN
IMO 9721669
|
10,557 | 2016 |
12.4
|
B |
| 848 |
AMURBORG
IMO 9466336
|
17,294 | 2011 |
12.4
|
B |
| 850 |
ANOUK
IMO 9196266
|
3,171 | 2000 |
12.4
|
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.