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
1,081 at D/E2,510 rated vessels · 463 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 | 1,485 | 1–3% | €80k–250k | — | vendor claim |
| Propeller redesign / replacement | 1,440 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 1,344 | 2–6% | €300k–900k | — | vendor claim |
| Methanol dual-fuel conversion | 965 | 5–15% | €8,000k–20,000k | — | vendor claim |
| LNG dual-fuel conversion | 795 | 15–25% | €15,000k–35,000k | — | vendor claim |
| Shaft generator / PTO | 360 | 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 |
| SEPELU · <25k | E | 26y | 2026 |
| MSC SABRINA III · <25k | E | 37y | 2026 |
| NILEDUTCH LION · 100-200k | E | 18y | 2026 |
| HAMBURG TRADER · <25k | 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 |
|---|---|---|---|---|---|
| 501 |
EVER GOVERN
IMO 9832717
|
20,150 TEU | 2019 |
5.2
|
B |
| 502 |
CMA CGM BUTTERFLY
IMO 9365790
|
9,661 TEU | 2008 |
5.2
|
B |
| 504 |
YM WELLBEING
IMO 9820908
|
14,000 TEU | 2015 |
5.2
|
B |
| 503 |
OOCL VERACRUZ
IMO 9979266
|
5,500 TEU | 2024 |
5.2
|
B |
| 509 |
MSC REEF
IMO 9754965
|
17,664 TEU | 2016 |
5.2
|
B |
| 508 |
MSC AMSTERDAM
IMO 9606338
|
16,652 TEU | 2015 |
5.2
|
B |
| 507 |
EVER MUSE
IMO 9935349
|
15,000 TEU | 2024 |
5.2
|
B |
| 506 |
MSC ELAINE
IMO 9393321
|
8,562 TEU | 2009 |
5.2
|
B |
| 505 |
TIHAMA
IMO 9736107
|
18,800 TEU | 2016 |
5.2
|
B |
| 511 |
HMM SKY
IMO 9976599
|
85,516 | 2024 |
5.2
|
B |
| 513 |
MSC MAYA
IMO 9708679
|
18,400 TEU | 2015 |
5.2
|
B |
| 512 |
MSC JEWEL
IMO 9842073
|
15,000 TEU | 2019 |
5.2
|
B |
| 510 |
MAYA BAY
IMO 9983401
|
2,954 TEU | 2023 |
5.2
|
B |
| 514 |
ALS CERES
IMO 9938303
|
7,165 TEU | 2021 |
5.3
|
B |
| 515 |
CSCL PACIFIC OCEAN
IMO 9695133
|
19,000 TEU | 2014 |
5.3
|
B |
| 516 |
EVER MEED
IMO 9935258
|
15,000 TEU | 2024 |
5.3
|
B |
| 517 |
COSCO SHIPPING ALPS
IMO 9757864
|
13,636 TEU | 2018 |
5.3
|
B |
| 518 |
EVER GENIUS
IMO 9786815
|
20,000 TEU | 2018 |
5.3
|
B |
| 519 |
MSC SOLA
IMO 9401104
|
11,300 TEU | 2008 |
5.3
|
B |
| 521 |
EBBA MAERSK
IMO 9321524
|
11,000 TEU | 2007 |
5.3
|
B |
| 520 |
AL NEFUD
IMO 9708813
|
18,691 TEU | 2015 |
5.3
|
B |
| 523 |
MSC ARIANE
IMO 9484443
|
13,050 TEU | 2012 |
5.3
|
B |
| 522 |
GREENFIELD
IMO 9970026
|
7,200 TEU | 2024 |
5.3
|
B |
| 524 |
CMA CGM ENDURANCE
IMO 9951549
|
7,600 TEU | 2024 |
5.3
|
B |
| 526 |
EVER GLOBE
IMO 9786841
|
20,000 TEU | 2019 |
5.3
|
B |
| 528 |
EVER GIVEN
IMO 9811000
|
20,000 TEU | 2015 |
5.3
|
B |
| 525 |
HMM DRIVE
IMO 9637246
|
13,154 TEU | 2014 |
5.3
|
B |
| 527 |
MSC DITTE
IMO 9754953
|
19,224 TEU | 2016 |
5.3
|
B |
| 529 |
KIEL EXPRESS
IMO 9229855
|
7,179 TEU | 2003 |
5.4
|
B |
| 530 |
MSC FAITH
IMO 9842085
|
15,000 TEU | 2019 |
5.4
|
B |
| 531 |
EVER GENTLE
IMO 9820922
|
20,150 TEU | 2019 |
5.4
|
B |
| 532 |
YM WREATH
IMO 9708473
|
14,198 TEU | 2017 |
5.4
|
B |
| 533 |
EXPRESS BRAZIL
IMO 9443023
|
3,459 TEU | 2010 |
5.4
|
B |
| 534 |
APL TEMASEK
IMO 9631955
|
13,892 TEU | 2013 |
5.4
|
B |
| 537 |
MSC DEILA
IMO 9461415
|
14,000 TEU | 2012 |
5.4
|
B |
| 536 |
COSCO JAPAN
IMO 9448748
|
8,500 TEU | 2010 |
5.4
|
B |
| 535 |
MSC GENOVA
IMO 9461386
|
14,000 TEU | 2010 |
5.4
|
B |
| 538 |
TAMPA TRIUMPH
IMO 9737462
|
13,870 TEU | 2017 |
5.4
|
B |
| 540 |
COSCO INDONESIA
IMO 9448786
|
8,500 TEU | 2010 |
5.4
|
B |
| 541 |
MAERSK SHIVLING
IMO 9728253
|
9,162 TEU | 2016 |
5.4
|
B |
| 539 |
EVER ALOT
IMO 9893955
|
23,888 TEU | 2022 |
5.4
|
B |
| 542 |
MSC GAIA
IMO 9401142
|
10,000 TEU | 2010 |
5.4
|
B |
| 543 |
EVER LAWFUL
IMO 9595498
|
8,000 TEU | 2012 |
5.4
|
B |
| 546 |
ELLY MAERSK
IMO 9321536
|
11,000 TEU | 2007 |
5.4
|
B |
| 545 |
NINGBO EXPRESS
IMO 9229843
|
7,179 TEU | 2002 |
5.4
|
B |
| 544 |
AL RIFFA
IMO 9525912
|
13,296 TEU | 2012 |
5.4
|
B |
| 547 |
MAERSK CHAMBAL
IMO 9525376
|
4,500 TEU | 2012 |
5.5
|
B |
| 549 |
MSC DANIELA
IMO 9399002
|
10,000 TEU | 2008 |
5.5
|
B |
| 548 |
CMA CGM TIGA
IMO 9938418
|
5,500 TEU | 2025 |
5.5
|
B |
| 550 |
MSC KATIE
IMO 9467457
|
12,400 TEU | 2012 |
5.5
|
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.