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 · 461 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 |
|---|---|---|---|---|---|
| 1601 |
GH FOEHN
IMO 9377559
|
2,700 TEU | 2008 |
11.8
|
D |
| 1602 |
MSC SANDY III
IMO 9239733
|
2,462 TEU | 2002 |
11.8
|
D |
| 1603 |
MUSTAFA DAYI
IMO 9365855
|
1,849 TEU | 2011 |
11.8
|
D |
| 1604 |
MAERSK VALPARAISO
IMO 9433054
|
1,740 TEU | 2010 |
11.8
|
D |
| 1605 |
VALENTINA
IMO 9344722
|
1,875 TEU | 2007 |
11.8
|
D |
| 1606 |
SANTA MARTA EXPRESS
IMO 9446104
|
2,550 TEU | 2010 |
11.8
|
D |
| 1607 |
CMA CGM AFRICA TWO
IMO 9451927
|
3,600 TEU | 2010 |
11.8
|
D |
| 1608 |
SAN ALFONSO
IMO 9344667
|
1,819 TEU | 2007 |
11.9
|
D |
| 1609 |
ODYSSEUS
IMO 9315824
|
2,824 TEU | 2006 |
11.9
|
D |
| 1610 |
MAERSK NANSHA
IMO 9385996
|
2,546 TEU | 2008 |
11.9
|
D |
| 1611 |
MSC LEA II
IMO 9162643
|
1,733 TEU | 2000 |
11.9
|
D |
| 1612 |
CAPE BYRON
IMO 9950090
|
1,900 TEU | 2023 |
11.9
|
D |
| 1613 |
LION
IMO 9208356
|
1,716 TEU | 2000 |
11.9
|
D |
| 1614 |
NEXOE MAERSK
IMO 9220885
|
2,226 TEU | 2001 |
11.9
|
D |
| 1615 |
MIEKE SCHULTE
IMO 9694426
|
2,339 TEU | 2015 |
11.9
|
D |
| 1616 |
MAERSK NILE
IMO 9385972
|
2,546 TEU | 2008 |
11.9
|
D |
| 1617 |
GREEN HOPE
IMO 9629160
|
1,700 TEU | 2014 |
12.0
|
D |
| 1618 |
MARIO A
IMO 9337377
|
1,604 TEU | 2007 |
12.0
|
D |
| 1619 |
KOTA NABIL
IMO 9356830
|
1,810 TEU | 2008 |
12.0
|
D |
| 1620 |
SINAR BUKITTINGGI
IMO 9942299
|
1,528 TEU | 2023 |
12.0
|
D |
| 1621 |
CAUCEDO EXPRESS
IMO 9434931
|
2,550 TEU | 2009 |
12.0
|
D |
| 1622 |
TORONTO EXPRESS
IMO 9253727
|
4,402 TEU | 2003 |
12.0
|
D |
| 1623 |
MSC RHIANNON
IMO 9224051
|
2,024 TEU | 2001 |
12.0
|
D |
| 1624 |
MARGARETE SCHULTE
IMO 9302944
|
2,602 TEU | 2006 |
12.0
|
D |
| 1625 |
ITAL WAY
IMO 9950789
|
2,300 TEU | 2024 |
12.0
|
D |
| 1626 |
CMA CGM ORANGE
IMO 9690092
|
2,259 TEU | 2016 |
12.0
|
D |
| 1627 |
MACAO
IMO 9362724
|
1,795 TEU | 2008 |
12.0
|
D |
| 1628 |
CRISTINA A
IMO 9337365
|
1,604 TEU | 2007 |
12.1
|
D |
| 1629 |
MSC YOSHEEN
IMO 9322011
|
1,730 TEU | 2008 |
12.1
|
D |
| 1630 |
RACHEL BORCHARD
IMO 1016587
|
17,484 | 2025 |
12.1
|
D |
| 1631 |
JPO AQUARIUS
IMO 9220316
|
2,470 TEU | 2000 |
12.1
|
D |
| 1632 |
MSC JANIS 3
IMO 9134490
|
2,086 TEU | 1997 |
12.1
|
D |
| 1633 |
MSC ARAINA III
IMO 9345984
|
3,534 TEU | 2008 |
12.1
|
D |
| 1634 |
CMA CGM AFRICA ONE
IMO 9451915
|
3,600 TEU | 2010 |
12.1
|
D |
| 1635 |
MAERSK WAKAYAMA
IMO 9550357
|
1,577 TEU | 2010 |
12.1
|
D |
| 1636 |
SAGAMORE
IMO 9322009
|
1,730 TEU | 2008 |
12.1
|
D |
| 1637 |
CONTAINERSHIPS POLAR
IMO 9814002
|
1,368 TEU | 2019 |
12.1
|
D |
| 1638 |
MSC CLAUDIA
IMO 9113446
|
1,205 TEU | 1996 |
12.1
|
D |
| 1639 |
RIYADH MUKAAB
IMO 9399806
|
2,750 TEU | 2010 |
12.2
|
D |
| 1640 |
MSC SINES R
IMO 9210098
|
3,430 TEU | 2001 |
12.2
|
D |
| 1641 |
VIOLETTA
IMO 9344710
|
1,875 TEU | 2007 |
12.2
|
D |
| 1642 |
ECO PONENTE
IMO 9985966
|
13,661 | 2024 |
12.2
|
D |
| 1643 |
MSC WIND II
IMO 9173135
|
2,169 TEU | 1999 |
12.2
|
D |
| 1644 |
NCL VESTLAND
IMO 9981790
|
1,300 TEU | 2025 |
12.3
|
D |
| 1645 |
CMA CGM AGATHA
IMO 9763722
|
2,338 TEU | 2016 |
12.3
|
D |
| 1646 |
LUCIE SCHULTE
IMO 9301926
|
2,602 TEU | 2006 |
12.3
|
D |
| 1647 |
AS CLAUDIA
IMO 9330549
|
2,824 TEU | 2007 |
12.3
|
D |
| 1648 |
PANDA 005
IMO 9981063
|
1,400 TEU | 2022 |
12.3
|
D |
| 1649 |
VALDIVIA
IMO 9333395
|
1,678 TEU | 2006 |
12.3
|
D |
| 1650 |
AS CARELIA
IMO 9309409
|
2,824 TEU | 2006 |
12.3
|
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.