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
1,079 at D/E2,510 rated vessels · 443 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 | 1,640 | 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 | 933 | 5–15% | €8,000k–20,000k | — | vendor claim |
| LNG dual-fuel conversion | 763 | 15–25% | €15,000k–35,000k | — | vendor claim |
| Shaft generator / PTO | 348 | 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 |
| C LION · 100-200k | E | 21y | 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 |
|---|---|---|---|---|---|
| 500 |
SEASPAN AMAZON
IMO 9630391
|
10,100 TEU | 2014 |
6.1
|
B |
| 502 |
APL SALALAH
IMO 9462029
|
10,700 TEU | 2012 |
6.1
|
B |
| 503 |
CSCL SATURN
IMO 9467299
|
14,074 TEU | 2011 |
6.1
|
B |
| 505 |
TUCAPEL
IMO 9569970
|
8,004 TEU | 2012 |
6.1
|
B |
| 504 |
MSC LAUREN
IMO 9467407
|
12,400 TEU | 2011 |
6.1
|
B |
| 506 |
MAERSK CALABAR
IMO 9525302
|
4,500 TEU | 2008 |
6.2
|
B |
| 507 |
APL BARCELONA
IMO 9462043
|
10,700 TEU | 2012 |
6.2
|
B |
| 508 |
APL COLUMBUS
IMO 9597525
|
9,200 TEU | 2010 |
6.2
|
B |
| 509 |
MSC EUGENIA
IMO 9785469
|
11,500 TEU | 2022 |
6.2
|
B |
| 511 |
MSC RENEE
IMO 9465306
|
13,102 TEU | 2012 |
6.2
|
B |
| 510 |
POTOMAC EXPRESS
IMO 9349526
|
6,435 TEU | 2008 |
6.2
|
B |
| 512 |
MSC RACHELE
IMO 9290282
|
8,238 TEU | 2005 |
6.2
|
B |
| 513 |
NORTHERN JAVELIN
IMO 9465095
|
8,814 TEU | 2009 |
6.2
|
B |
| 515 |
CMA CGM NILE
IMO 9732589
|
9,400 TEU | 2015 |
6.2
|
B |
| 514 |
MAYA BAY
IMO 9983401
|
2,954 TEU | 2022 |
6.2
|
B |
| 516 |
CMA CGM FORT JAMES
IMO 9966764
|
7,600 TEU | 2024 |
6.2
|
B |
| 517 |
MSC REGULUS
IMO 9465291
|
13,102 TEU | 2012 |
6.2
|
B |
| 519 |
CSCL MERCURY
IMO 9467275
|
14,074 TEU | 2011 |
6.2
|
B |
| 518 |
MSC VEGA
IMO 9465265
|
13,102 TEU | 2012 |
6.2
|
B |
| 520 |
CSCL STAR
IMO 9466867
|
14,074 TEU | 2011 |
6.2
|
B |
| 522 |
MSC BRANKA
IMO 9720495
|
9,400 TEU | 2016 |
6.3
|
B |
| 521 |
MSC DUBAI VII
IMO 9444285
|
6,310 TEU | 2007 |
6.3
|
B |
| 523 |
CMA CGM PEGASUS
IMO 9399210
|
11,400 TEU | 2010 |
6.3
|
B |
| 524 |
MH PERSEUS
IMO 9967433
|
7,092 TEU | 2021 |
6.3
|
B |
| 525 |
BUDAPEST EXPRESS
IMO 9450430
|
8,749 TEU | 2010 |
6.3
|
B |
| 528 |
MSC SOFIA PAZ
IMO 9695028
|
9,000 TEU | 2013 |
6.3
|
B |
| 527 |
MSC SAVONA
IMO 9460356
|
14,036 TEU | 2010 |
6.3
|
B |
| 526 |
COPIAPO
IMO 9687526
|
8,714 TEU | 2014 |
6.3
|
B |
| 529 |
ONE REASSURANCE
IMO 9952696
|
7,000 TEU | 2023 |
6.3
|
B |
| 530 |
MSC MARIA SAVERIA
IMO 9467421
|
12,400 TEU | 2011 |
6.3
|
B |
| 531 |
MAERSK GUAYAQUIL
IMO 9727871
|
10,100 TEU | 2015 |
6.3
|
B |
| 533 |
MSC JUDITH
IMO 9299549
|
8,089 TEU | 2006 |
6.3
|
B |
| 532 |
MSC ALIYA
IMO 9842097
|
14,272 TEU | 2019 |
6.3
|
B |
| 534 |
MAERSK CONGO
IMO 9525340
|
4,500 TEU | 2008 |
6.3
|
B |
| 535 |
CMA CGM GEMINI
IMO 9410791
|
11,400 TEU | 2011 |
6.3
|
B |
| 539 |
VALENCE
IMO 9628180
|
8,800 TEU | 2011 |
6.3
|
B |
| 538 |
CMA CGM MUSSET
IMO 9406611
|
6,554 TEU | 2010 |
6.3
|
B |
| 537 |
MSC TORONTO
IMO 9299525
|
8,089 TEU | 2006 |
6.3
|
B |
| 536 |
MSC LAGOS X
IMO 9605152
|
9,403 TEU | 2013 |
6.3
|
B |
| 542 |
MSC DAMLA
IMO 9250983
|
6,402 TEU | 2002 |
6.3
|
B |
| 543 |
TEMPANOS
IMO 9447897
|
8,004 TEU | 2011 |
6.3
|
B |
| 541 |
ZIM MOONSTONE
IMO 9968073
|
7,000 TEU | 2024 |
6.3
|
B |
| 544 |
CMA CGM KHAO SOK
IMO 9925837
|
5,900 TEU | 2023 |
6.3
|
B |
| 540 |
MSC EMANUELA
IMO 9399052
|
13,798 TEU | 2010 |
6.3
|
B |
| 545 |
ONE ORPHEUS
IMO 9313008
|
9,040 TEU | 2008 |
6.3
|
B |
| 547 |
MSC ASYA
IMO 9339296
|
9,178 TEU | 2008 |
6.4
|
B |
| 546 |
CMA CGM BENJAMIN FRANKLIN
IMO 9706891
|
17,859 TEU | 2015 |
6.4
|
B |
| 550 |
MSC NITYA B
IMO 9778117
|
11,010 TEU | 2017 |
6.4
|
B |
| 549 |
MSC PARIS
IMO 9301483
|
8,204 TEU | 2006 |
6.4
|
B |
| 548 |
SPEED
IMO 9475698
|
13,100 TEU | 2012 |
6.4
|
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.