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
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 |
|---|---|---|---|---|---|
| 51 |
COSCO SHIPPING FAN RONG
IMO 9928906
|
61,537 | 2022 |
4.4
|
A |
| 52 |
SAGA FORTUNE
IMO 9644524
|
56,023 | 2012 |
4.5
|
A |
| 53 |
GREEN KOTKA
IMO 9976056
|
68,003 | 2023 |
4.5
|
A |
| 55 |
COSCO SHIPPING GRACE
IMO 9928865
|
61,613 | 2021 |
4.5
|
A |
| 54 |
GREEN HELSINKI
IMO 9976068
|
68,022 | 2023 |
4.5
|
A |
| 56 |
BAY PEARL
IMO 9460801
|
51,703 | 2011 |
4.5
|
A |
| 57 |
GREEN RAUMA
IMO 9976070
|
68,010 | 2023 |
4.5
|
A |
| 58 |
BBC MERCURY
IMO 9965588
|
39,869 | 2023 |
4.6
|
A |
| 59 |
DEVBULK DENIZ
IMO 9758301
|
41,500 | 2020 |
4.6
|
A |
| 60 |
TAWA ARROW
IMO 9401879
|
54,274 | 2008 |
4.6
|
A |
| 61 |
DEVBULK SERVET
IMO 9756250
|
41,500 | 2020 |
4.6
|
A |
| 63 |
OSAKANA
IMO 9253870
|
57,624 | 2004 |
4.6
|
A |
| 62 |
HALOPHYLA
IMO 9613329
|
57,440 | 2013 |
4.6
|
A |
| 64 |
SSI FURIOUS
IMO 9960174
|
37,973 | 2023 |
4.6
|
A |
| 65 |
WECO LAURA
IMO 9877327
|
38,575 | 2020 |
4.6
|
A |
| 66 |
IVS PHINDA
IMO 9700940
|
37,720 | 2014 |
4.6
|
A |
| 68 |
TENCA ARROW
IMO 9385489
|
72,863 | 2009 |
4.7
|
A |
| 67 |
SSI PROVIDENCE
IMO 9883065
|
37,899 | 2020 |
4.7
|
A |
| 69 |
SAGA FRIGG
IMO 9613850
|
55,596 | 2013 |
4.7
|
A |
| 70 |
BBC VENUS
IMO 9965590
|
39,827 | 2023 |
4.7
|
A |
| 71 |
COSCO SHIPPING HONOR
IMO 9881653
|
62,013 | 2020 |
4.7
|
A |
| 72 |
GREEN AANEKOSKI
IMO 9976082
|
64,986 | 2023 |
4.8
|
A |
| 73 |
SAGA MONAL
IMO 9117739
|
56,801 | 1996 |
4.8
|
A |
| 75 |
DEVBULK SADIYE
IMO 9711705
|
37,322 | 2015 |
4.8
|
A |
| 74 |
SAGA FUTURE
IMO 9613836
|
55,596 | 2012 |
4.8
|
A |
| 76 |
NANDU ARROW
IMO 9529580
|
62,960 | 2011 |
4.8
|
A |
| 77 |
OCEAN PEARL
IMO 9401829
|
52,365 | 2009 |
4.8
|
A |
| 79 |
CHANNEL PEARL
IMO 9644550
|
50,633 | 2012 |
4.8
|
A |
| 78 |
SAGA ADVENTURE
IMO 9317406
|
46,627 | 2005 |
4.8
|
A |
| 80 |
AFRICAN GROUSE
IMO 9755737
|
37,700 | 2015 |
4.8
|
A |
| 81 |
GREEN KEMI
IMO 9976044
|
64,986 | 2023 |
4.8
|
A |
| 82 |
GREEN MUNGUBA
IMO 9976496
|
64,997 | 2024 |
4.8
|
A |
| 83 |
SSI ENDURANCE
IMO 9932971
|
37,973 | 2022 |
4.8
|
A |
| 84 |
CITRIODORA
IMO 9613305
|
57,440 | 2013 |
4.9
|
A |
| 85 |
ATLAS S
IMO 9491575
|
34,478 | 2011 |
4.9
|
A |
| 86 |
PANAMANA
IMO 9401805
|
58,022 | 2010 |
4.9
|
A |
| 87 |
STAR TOSCANA
IMO 9452139
|
51,674 | 2012 |
4.9
|
A |
| 88 |
MAPLE ARROW
IMO 9652569
|
55,889 | 2014 |
4.9
|
A |
| 89 |
DEVBULK CANSEN
IMO 9703459
|
36,706 | 2014 |
4.9
|
A |
| 90 |
OSHIMANA
IMO 9249295
|
53,151 | 2003 |
4.9
|
A |
| 91 |
SAGA FREYA
IMO 9502336
|
55,807 | 2017 |
4.9
|
A |
| 92 |
SSI ERDOGAN BEY
IMO 9401946
|
50,780 | 2010 |
4.9
|
A |
| 93 |
LAKE PEARL
IMO 9401984
|
51,687 | 2010 |
5.0
|
A |
| 94 |
RIVER PEARL
IMO 9363663
|
52,224 | 2008 |
5.0
|
A |
| 95 |
POSIDANA
IMO 9371086
|
58,022 | 2008 |
5.0
|
A |
| 97 |
SAGA ODYSSEY
IMO 9401788
|
46,500 | 2008 |
5.0
|
A |
| 96 |
SAGA FJORD
IMO 9613862
|
55,596 | 2013 |
5.0
|
A |
| 100 |
DRINA S
IMO 9635743
|
38,037 | 2012 |
5.0
|
A |
| 99 |
FJORD PEARL
IMO 9460796
|
51,703 | 2011 |
5.0
|
A |
| 98 |
BEATRICE
IMO 9865245
|
39,278 | 2019 |
5.0
|
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 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.