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
509 at D/E2,735 rated vessels · 271 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) | 756 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 756 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 652 | 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 |
|---|---|---|---|---|---|
| 50 |
COSCO SHIPPING ZHUO YUE
IMO 9872157
|
61,991 | 2019 |
4.3
|
A |
| 52 |
ELISABETH OLDENDORFF
IMO 9717656
|
38,600 | 2015 |
4.3
|
A |
| 53 |
DELOS DAWN
IMO 9363675
|
52,224 | 2008 |
4.3
|
A |
| 54 |
BAY PEARL
IMO 9460801
|
51,703 | 2011 |
4.3
|
A |
| 56 |
GREEN NAGOYA
IMO 1027366
|
64,998 | 2024 |
4.3
|
A |
| 55 |
DEVBULK DENIZ
IMO 9758301
|
41,500 | 2020 |
4.3
|
A |
| 57 |
WANG FU
IMO 9998066
|
61,676 | 2024 |
4.3
|
A |
| 58 |
ZHONG YUAN HAI YUN KAI TUO
IMO 9837640
|
62,051 | 2018 |
4.4
|
A |
| 59 |
COSCO SHIPPING FOUNTAIN
IMO 9928891
|
61,495 | 2022 |
4.4
|
A |
| 60 |
THOR FEARLESS
IMO 9317341
|
54,881 | 2005 |
4.4
|
A |
| 62 |
PROVIDANA
IMO 9380788
|
58,022 | 2007 |
4.4
|
A |
| 61 |
GREEN KEMI
IMO 9976044
|
64,986 | 2023 |
4.4
|
A |
| 63 |
BBC CERES
IMO 9972490
|
40,600 | 2024 |
4.4
|
A |
| 64 |
OKIANA
IMO 9253868
|
57,599 | 2004 |
4.4
|
A |
| 65 |
HERBERT
IMO 9931551
|
61,762 | 2022 |
4.4
|
A |
| 66 |
DEVBULK DAMLA
IMO 9711717
|
37,322 | 2015 |
4.5
|
A |
| 67 |
AMERICA PEARL
IMO 9659751
|
45,556 | 2014 |
4.5
|
A |
| 68 |
COSCO SHIPPING PENG BO
IMO 9928920
|
61,576 | 2023 |
4.5
|
A |
| 70 |
PIPIT ARROW
IMO 9552898
|
62,980 | 2012 |
4.5
|
A |
| 69 |
GREEN KOTKA
IMO 9976056
|
64,986 | 2023 |
4.5
|
A |
| 71 |
COSCO SHIPPING SINCERE
IMO 9928877
|
61,641 | 2022 |
4.5
|
A |
| 73 |
POSIDANA
IMO 9371086
|
58,022 | 2008 |
4.5
|
A |
| 72 |
COSCO SHIPPING VISION
IMO 9881677
|
61,942 | 2021 |
4.5
|
A |
| 74 |
BBC APOLLO
IMO 9972488
|
40,565 | 2023 |
4.5
|
A |
| 75 |
ZHONG YUAN HAI YUN JIN QU
IMO 9846495
|
62,045 | 2019 |
4.6
|
A |
| 76 |
MANTA NIGAR
IMO 9749843
|
34,391 | 2016 |
4.6
|
A |
| 78 |
BBC PLUTO
IMO 1020459
|
40,459 | 2025 |
4.6
|
A |
| 77 |
SAGA FORTUNE
IMO 9644524
|
56,023 | 2012 |
4.6
|
A |
| 79 |
COSCO SHIPPING FAN RONG
IMO 9928906
|
61,537 | 2022 |
4.6
|
A |
| 80 |
IVS PHINDA
IMO 9700940
|
37,720 | 2014 |
4.6
|
A |
| 81 |
GREEN AANEKOSKI
IMO 9976082
|
64,986 | 2023 |
4.6
|
A |
| 83 |
LUNARA
IMO 9443126
|
33,709 | 2010 |
4.6
|
A |
| 82 |
COSCO SHIPPING CHANG SHENG
IMO 9928918
|
61,567 | 2022 |
4.6
|
A |
| 84 |
SAGA FLORA
IMO 9502348
|
55,807 | 2018 |
4.6
|
A |
| 85 |
SAGA FJORD
IMO 9613862
|
55,596 | 2013 |
4.7
|
A |
| 86 |
IRVINE BAY
IMO 9682928
|
37,920 | 2014 |
4.7
|
A |
| 87 |
SAGA FRIGG
IMO 9613850
|
55,596 | 2013 |
4.7
|
A |
| 88 |
GREEN ITAJAI
IMO 9976446
|
64,998 | 2024 |
4.7
|
A |
| 89 |
DEVBULK SARE
IMO 9544152
|
40,445 | 2012 |
4.7
|
A |
| 90 |
POLSTEAM RUDNO
IMO 9984821
|
37,630 | 2025 |
4.7
|
A |
| 91 |
SPANACO ADVENTURE
IMO 9014078
|
47,076 | 1994 |
4.7
|
A |
| 93 |
COSCO SHIPPING JIN XIU
IMO 9872169
|
62,003 | 2019 |
4.7
|
A |
| 92 |
STRAIT PEARL
IMO 9607576
|
50,630 | 2011 |
4.7
|
A |
| 94 |
BBC SATURN
IMO 9932127
|
40,255 | 2022 |
4.7
|
A |
| 97 |
SSI ENDEAVOUR
IMO 9883053
|
37,910 | 2020 |
4.7
|
A |
| 98 |
BEATRICE
IMO 9865245
|
39,278 | 2019 |
4.7
|
A |
| 96 |
STAR TOSCANA
IMO 9452139
|
51,674 | 2012 |
4.7
|
A |
| 95 |
ORION
IMO 9495935
|
51,679 | 2012 |
4.7
|
A |
| 99 |
SAGA SKY
IMO 9144354
|
47,034 | 1996 |
4.8
|
A |
| 100 |
EAGLE ARROW
IMO 9529592
|
62,967 | 2011 |
4.8
|
A |
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.