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
1,079 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 |
|---|---|---|---|---|---|
| 1501 |
SIARGAO
IMO 9944742
|
1,781 TEU | 2023 |
10.8
|
D |
| 1502 |
ERATO
IMO 9472103
|
2,546 TEU | 2011 |
10.8
|
D |
| 1503 |
TONGALA
IMO 9278105
|
4,253 TEU | 2004 |
10.8
|
D |
| 1504 |
MSC ANNICK
IMO 9169122
|
4,038 TEU | 1998 |
10.8
|
D |
| 1505 |
CORELLI
IMO 9126766
|
1,119 TEU | 1996 |
10.8
|
D |
| 1506 |
MSC ASSUNTA III
IMO 9243590
|
2,754 TEU | 2004 |
10.8
|
D |
| 1507 |
MSC PROSPERITY II
IMO 9256418
|
1,262 TEU | 2003 |
10.8
|
D |
| 1508 |
EVER CHART
IMO 9950777
|
1,800 TEU | 2024 |
10.8
|
D |
| 1509 |
MAERSK INCHEON
IMO 9329629
|
3,534 TEU | 2007 |
10.9
|
D |
| 1510 |
EM KEA
IMO 9334351
|
3,091 TEU | 2007 |
10.9
|
D |
| 1511 |
CMA CGM SAN ANTONIO
IMO 9294173
|
2,824 TEU | 2005 |
10.9
|
D |
| 1512 |
MSC ANISHA R.
IMO 9227297
|
4,112 TEU | 2002 |
10.9
|
D |
| 1513 |
EVER CHAMP
IMO 9950765
|
1,800 TEU | 2023 |
10.9
|
D |
| 1514 |
BERNARD A
IMO 9415959
|
1,604 TEU | 2009 |
10.9
|
D |
| 1515 |
CMA CGM LEBU
IMO 9443463
|
4,249 TEU | 2010 |
10.9
|
D |
| 1516 |
MSC MILA 3
IMO 9062996
|
2,078 TEU | 1995 |
10.9
|
D |
| 1517 |
LORRAINE
IMO 9311763
|
2,742 TEU | 2006 |
10.9
|
D |
| 1518 |
TAMPA I
IMO 9196840
|
6,252 TEU | 2000 |
10.9
|
D |
| 1519 |
CARMEL I
IMO 9395927
|
4,330 TEU | 2010 |
10.9
|
D |
| 1520 |
MATHILDE SCHULTE
IMO 9676709
|
2,300 TEU | 2015 |
11.0
|
D |
| 1521 |
MSC CHIQUITA III
IMO 9336189
|
2,546 TEU | 2007 |
11.0
|
D |
| 1522 |
MSC AGNA II
IMO 9509774
|
1,496 TEU | 2009 |
11.0
|
D |
| 1523 |
LETO
IMO 9311880
|
3,091 TEU | 2006 |
11.0
|
D |
| 1524 |
MSC FALCON III
IMO 9299032
|
2,478 TEU | 2004 |
11.0
|
D |
| 1525 |
INDEPENDENT FUTURE
IMO 9246712
|
3,091 TEU | 2005 |
11.0
|
D |
| 1526 |
CONTAINERSHIPS ARCTIC
IMO 9818400
|
1,380 TEU | 2015 |
11.1
|
D |
| 1527 |
DIMITRIS C
IMO 9210074
|
3,430 TEU | 2001 |
11.1
|
D |
| 1528 |
MSC TIAN III
IMO 9359715
|
2,401 TEU | 2007 |
11.1
|
D |
| 1529 |
MSC RESILIENT III
IMO 9240873
|
2,602 TEU | 2002 |
11.1
|
D |
| 1530 |
CAPE FERROL
IMO 9359325
|
1,440 TEU | 2008 |
11.1
|
D |
| 1531 |
ZIM IBERIA
IMO 9431719
|
4,256 TEU | 2009 |
11.1
|
D |
| 1532 |
MSC JULIA R.
IMO 9227338
|
4,112 TEU | 2002 |
11.1
|
D |
| 1533 |
CMA CGM AFRICA FOUR
IMO 9451965
|
3,718 TEU | 2010 |
11.1
|
D |
| 1534 |
VELA
IMO 9406180
|
4,254 TEU | 2009 |
11.1
|
D |
| 1535 |
CONTSHIP PEP II
IMO 9470961
|
1,970 TEU | 2010 |
11.1
|
D |
| 1536 |
PIONEER IV
IMO 9449120
|
3,635 TEU | 2012 |
11.1
|
D |
| 1537 |
TOMRIZ A
IMO 9126754
|
1,119 TEU | 1995 |
11.1
|
D |
| 1538 |
MSC CANCUN IV
IMO 9403396
|
4,330 TEU | 2009 |
11.1
|
D |
| 1539 |
PUERTO LIMON EXPRESS
IMO 9434943
|
2,556 TEU | 2009 |
11.1
|
D |
| 1540 |
MSC ZONDA III
IMO 9436472
|
3,534 TEU | 2008 |
11.1
|
D |
| 1541 |
SPARTEL TRADER
IMO 9243203
|
3,237 TEU | 2000 |
11.1
|
D |
| 1542 |
CHIQUITA EXPRESS
IMO 9304758
|
2,490 TEU | 2005 |
11.1
|
D |
| 1543 |
GSL ELIZABETH
IMO 9308429
|
2,700 TEU | 2006 |
11.1
|
D |
| 1544 |
ETE N
IMO 9509126
|
2,758 TEU | 2012 |
11.2
|
D |
| 1545 |
SASKIA A
IMO 9315927
|
2,824 TEU | 2007 |
11.2
|
D |
| 1546 |
MSC RHIANNON
IMO 9224051
|
2,024 TEU | 2001 |
11.2
|
D |
| 1547 |
NAVIOS DOMINO
IMO 9478494
|
4,250 TEU | 2008 |
11.2
|
D |
| 1548 |
GERHARD SCHULTE
IMO 9328481
|
3,400 TEU | 2006 |
11.2
|
D |
| 1549 |
MSC MANASVI II
IMO 9347724
|
1,440 TEU | 2006 |
11.2
|
D |
| 1550 |
SEATRADE CHILE
IMO 9976202
|
1,781 TEU | 2024 |
11.2
|
D |
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.