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 2024. 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 |
|---|---|---|---|---|---|
| 602 |
MSC NOA
IMO 9398228
|
6,500 TEU | 2009 |
6.6
|
B |
| 601 |
NINGBO EXPRESS
IMO 9229843
|
7,179 TEU | 2002 |
6.6
|
B |
| 600 |
MAERSK FELIXSTOWE
IMO 9969041
|
5,920 TEU | 2023 |
6.6
|
B |
| 604 |
CMA CGM TOKYO
IMO 9629380
|
6,622 TEU | 2013 |
6.6
|
B |
| 605 |
EVER LUCENT
IMO 9629067
|
8,488 TEU | 2011 |
6.6
|
B |
| 606 |
MSC ADELAIDE
IMO 9618290
|
8,800 TEU | 2013 |
6.6
|
B |
| 609 |
CAUTIN
IMO 9687538
|
9,326 TEU | 2014 |
6.6
|
B |
| 608 |
SANTOS EXPRESS
IMO 9777632
|
10,818 TEU | 2017 |
6.6
|
B |
| 607 |
MSC RIKKU
IMO 9393319
|
8,600 TEU | 2009 |
6.6
|
B |
| 610 |
MSC CASSANDRE
IMO 9785471
|
11,500 TEU | 2022 |
6.6
|
B |
| 613 |
MSC ABY
IMO 9166778
|
7,226 TEU | 1999 |
6.6
|
B |
| 612 |
MAERSK CUBANGO
IMO 9525481
|
4,500 TEU | 2012 |
6.6
|
B |
| 611 |
ZIM AMBER
IMO 9967952
|
7,000 TEU | 2023 |
6.6
|
B |
| 617 |
ONE MANEUVER
IMO 9475648
|
6,724 TEU | 2011 |
6.7
|
B |
| 616 |
CMA CGM BEIRA
IMO 9302956
|
2,602 TEU | 2006 |
6.7
|
B |
| 615 |
VALIANT
IMO 9628178
|
8,800 TEU | 2013 |
6.7
|
B |
| 614 |
SANTA CATARINA
IMO 9444730
|
7,090 TEU | 2007 |
6.7
|
B |
| 618 |
CMA CGM FORT BOURBON
IMO 9966752
|
7,600 TEU | 2024 |
6.7
|
B |
| 619 |
MAERSK GIBRALTAR
IMO 9739692
|
10,100 TEU | 2016 |
6.7
|
B |
| 621 |
APL VANCOUVER
IMO 9597472
|
9,200 TEU | 2013 |
6.7
|
B |
| 620 |
KUALA LUMPUR EXPRESS
IMO 9343730
|
8,606 TEU | 2008 |
6.7
|
B |
| 622 |
TIRUA
IMO 9612882
|
8,000 TEU | 2012 |
6.7
|
B |
| 625 |
MAERSK KINLOSS
IMO 9333022
|
6,200 TEU | 2008 |
6.7
|
B |
| 624 |
MSC FIE X
IMO 9120853
|
7,226 TEU | 1997 |
6.7
|
B |
| 623 |
MAERSK SELETAR
IMO 9315197
|
5,648 TEU | 2007 |
6.7
|
B |
| 627 |
OOCL CHONGQING
IMO 9622629
|
13,200 TEU | 2013 |
6.7
|
B |
| 626 |
NAVIOS CONSTELLATION
IMO 9408877
|
10,000 TEU | 2011 |
6.7
|
B |
| 628 |
ISTANBUL EXPRESS
IMO 9723277
|
9,040 TEU | 2016 |
6.7
|
B |
| 629 |
CMA CGM LAMARTINE
IMO 9409194
|
6,500 TEU | 2010 |
6.7
|
B |
| 634 |
MSC FLAVIA
IMO 9467433
|
12,400 TEU | 2012 |
6.7
|
B |
| 633 |
MSC YUKTA X
IMO 9146467
|
7,226 TEU | 1995 |
6.7
|
B |
| 632 |
MSC SANDRA
IMO 9203954
|
4,340 TEU | 2000 |
6.7
|
B |
| 631 |
MSC ELMA
IMO 9735218
|
9,400 TEU | 2016 |
6.7
|
B |
| 630 |
KOTKA
IMO 9085534
|
6,418 TEU | 1996 |
6.7
|
B |
| 636 |
EBBA MAERSK
IMO 9321524
|
11,000 TEU | 2007 |
6.7
|
B |
| 635 |
MSC MELINE
IMO 9702077
|
8,800 TEU | 2015 |
6.7
|
B |
| 638 |
MSC MARIA ELENA
IMO 9304423
|
9,200 TEU | 2006 |
6.7
|
B |
| 637 |
JAZAN
IMO 9349540
|
6,435 TEU | 2008 |
6.7
|
B |
| 639 |
XIN SHANGHAI
IMO 9307231
|
9,574 TEU | 2006 |
6.7
|
B |
| 640 |
MSC DESIREE
IMO 9745665
|
9,400 TEU | 2017 |
6.7
|
B |
| 642 |
MAERSK COLOMBO
IMO 9525390
|
4,500 TEU | 2012 |
6.7
|
B |
| 641 |
VALUE
IMO 9628166
|
8,800 TEU | 2013 |
6.7
|
B |
| 643 |
MSC MARGRIT
IMO 9465318
|
13,100 TEU | 2012 |
6.7
|
B |
| 645 |
ALTAMIRA EXPRESS
IMO 9407146
|
5,041 TEU | 2009 |
6.8
|
B |
| 644 |
OSAKA EXPRESS
IMO 9320697
|
8,606 TEU | 2007 |
6.8
|
B |
| 649 |
APL NEW YORK
IMO 9597484
|
9,200 TEU | 2013 |
6.8
|
B |
| 648 |
SANTA URSULA
IMO 9430387
|
7,114 TEU | 2007 |
6.8
|
B |
| 647 |
BREMEN EXPRESS
IMO 9343728
|
8,606 TEU | 2008 |
6.8
|
B |
| 646 |
CALLAO EXPRESS
IMO 9777606
|
10,818 TEU | 2016 |
6.8
|
B |
| 650 |
MSC ABIDJAN
IMO 9618264
|
8,800 TEU | 2013 |
6.8
|
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 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.