Container Ship 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
1,080 at D/E2,510 rated vessels · 549 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 |
|---|---|---|---|---|---|
| Turbocharger cut-out | 1,641 | 1–3% | €80k–250k | — | vendor claim |
| Propeller redesign / replacement | 1,427 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 1,330 | 2–6% | €300k–900k | — | vendor claim |
| Methanol dual-fuel conversion | 934 | 5–15% | €8,000k–20,000k | — | vendor claim |
| LNG dual-fuel conversion | 764 | 15–25% | €15,000k–35,000k | — | vendor claim |
| Shaft generator / PTO | 354 | 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 |
|---|---|---|---|
| HANSA AFRICA · 25-60k | E | 16y | 2026 |
| MSC ANNAMARIA · <25k | E | 1y | 2026 |
| SEPELU · <25k | E | 26y | 2026 |
| MSC SABRINA III · <25k | E | 37y | 2026 |
| C LION · 100-200k | E | 21y | 2026 |
Note: Container/ro-ro cargo ship vessels are excluded from this ranking — their CII type is a per-vessel flag-state determination, so no valid comparison metric exists for them.
| # | Vessel | Size (TEU) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 401 |
CMA CGM PELLEAS
IMO 9365788
|
9,661 TEU | 2008 |
5.0
|
A |
| 400 |
NORFOLK EXPRESS
IMO 9665592
|
13,806 TEU | 2013 |
5.0
|
A |
| 406 |
CMA CGM ANTOINE DE SAINT EXUPERY
IMO 9776418
|
20,954 TEU | 2018 |
5.0
|
A |
| 405 |
AL MURAYKH
IMO 9708863
|
18,800 TEU | 2015 |
5.0
|
A |
| 404 |
MSC AMBRA
IMO 9839480
|
23,756 TEU | 2020 |
5.0
|
A |
| 403 |
COSCO SHIPPING GALAXY
IMO 9795634
|
20,988 TEU | 2019 |
5.0
|
A |
| 409 |
MAERSK CLEVELAND
IMO 9936408
|
15,500 TEU | 2023 |
5.0
|
A |
| 408 |
ONE FREEDOM
IMO 9934357
|
15,000 TEU | 2022 |
5.0
|
A |
| 407 |
MAERSK SAN CLEMENTE
IMO 9699189
|
9,000 TEU | 2013 |
5.0
|
A |
| 410 |
COSCO SHIPPING HIMALAYAS
IMO 9757840
|
14,568 TEU | 2017 |
5.0
|
A |
| 412 |
MSC FEBE
IMO 9839478
|
23,756 TEU | 2019 |
5.0
|
A |
| 411 |
APL RAFFLES
IMO 9631979
|
17,292 TEU | 2013 |
5.0
|
A |
| 413 |
MSC PALOMA
IMO 9441001
|
14,036 TEU | 2010 |
5.0
|
A |
| 415 |
COSCO SHIPPING KILIMANJARO
IMO 9757852
|
14,568 TEU | 2017 |
5.0
|
A |
| 414 |
HMM FOREST
IMO 9998470
|
100,902 | 2025 |
5.0
|
A |
| 416 |
UMM QARN
IMO 9732333
|
14,993 TEU | 2016 |
5.0
|
A |
| 418 |
EVER AEON
IMO 9943279
|
24,004 TEU | 2021 |
5.0
|
A |
| 417 |
CHARLESTON EXPRESS
IMO 9665645
|
13,806 TEU | 2014 |
5.0
|
A |
| 420 |
YM WIDTH
IMO 9708447
|
14,078 TEU | 2016 |
5.0
|
A |
| 419 |
APL CHANGI
IMO 9631981
|
17,292 TEU | 2013 |
5.0
|
A |
| 421 |
YM WELLHEAD
IMO 9684665
|
14,080 TEU | 2015 |
5.0
|
A |
| 425 |
SAN MARCO MAERSK
IMO 9622215
|
9,669 TEU | 2013 |
5.0
|
A |
| 427 |
EVER ALOT
IMO 9893955
|
23,888 TEU | 2022 |
5.0
|
A |
| 424 |
AL MASHRAB
IMO 9732319
|
14,993 TEU | 2016 |
5.0
|
A |
| 423 |
MSC DIANA
IMO 9755933
|
19,472 TEU | 2016 |
5.0
|
A |
| 422 |
MSC ORION
IMO 9857157
|
15,000 TEU | 2020 |
5.0
|
A |
| 426 |
ATLANTA EXPRESS
IMO 9667162
|
13,806 TEU | 2014 |
5.0
|
A |
| 431 |
SAN AUGUSTIN MAERSK
IMO 9622239
|
9,669 TEU | 2013 |
5.0
|
A |
| 430 |
HYUNDAI JUPITER
IMO 9725134
|
9,162 TEU | 2016 |
5.0
|
A |
| 432 |
YM TROPHY
IMO 9789996
|
11,850 TEU | 2022 |
5.0
|
A |
| 429 |
MSC MARA
IMO 9932892
|
15,934 TEU | 2021 |
5.0
|
A |
| 434 |
COSCO SHIPPING STAR
IMO 9795658
|
21,237 TEU | 2019 |
5.0
|
A |
| 433 |
CMA CGM KERGUELEN
IMO 9702132
|
17,554 TEU | 2015 |
5.0
|
A |
| 428 |
HMM PRIDE
IMO 9637260
|
13,050 TEU | 2014 |
5.0
|
A |
| 436 |
MSC MINA
IMO 9839260
|
23,656 TEU | 2019 |
5.1
|
B |
| 435 |
EVER MASS
IMO 9935234
|
15,000 TEU | 2024 |
5.1
|
B |
| 441 |
CMA CGM EVERGLADE
IMO 9894985
|
15,000 TEU | 2022 |
5.1
|
B |
| 440 |
BARZAN
IMO 9708851
|
19,870 TEU | 2015 |
5.1
|
B |
| 442 |
MSC LUCIANA
IMO 9398383
|
11,668 TEU | 2009 |
5.1
|
B |
| 439 |
EVER GOLDEN
IMO 9811012
|
20,000 TEU | 2015 |
5.1
|
B |
| 443 |
CMA CGM BRAZIL
IMO 9860245
|
15,128 TEU | 2020 |
5.1
|
B |
| 438 |
CMA CGM ADONIS
IMO 9882528
|
15,000 TEU | 2022 |
5.1
|
B |
| 437 |
HOUSTON EXPRESS
IMO 9667150
|
13,806 TEU | 2014 |
5.1
|
B |
| 445 |
OOCL INDONESIA
IMO 9776224
|
21,413 TEU | 2018 |
5.1
|
B |
| 444 |
CMA CGM CENTAURUS
IMO 9410777
|
11,400 TEU | 2010 |
5.1
|
B |
| 447 |
MSC TOGO
IMO 9974486
|
8,300 TEU | 2025 |
5.1
|
B |
| 446 |
MSC KAYLEY
IMO 9927299
|
15,264 TEU | 2023 |
5.1
|
B |
| 450 |
COSCO SHIPPING ROSE
IMO 9785809
|
13,800 TEU | 2018 |
5.1
|
B |
| 449 |
EVER MEGA
IMO 9935260
|
15,500 TEU | 2021 |
5.1
|
B |
| 448 |
MAERSK CINCINNATI
IMO 9936410
|
15,500 TEU | 2024 |
5.1
|
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.