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.

Segment rank (2024)

#1,419 of 2,098 container ships

CO₂ intensity

11.0 g CO₂/dwt·nm

vs segment average (10.38)

+6% higher

Bulk Carrier Container Ship Oil Tanker Chemical Tanker Gas Carrier LNG Carrier General Cargo Vehicle Carrier Refrigerated Cargo Ro-Ro Cargo

CII band distribution

1,079 at D/E

A 312B 412C 707D 598E 481

2,510 rated vessels · 443 of the D/E set dock within 12 months

Docking pipeline — D/E vessels per quarter

'27 Q1

'27 Q2

'27 Q3

'27 Q4

115

'28 Q1

'28 Q2

'28 Q3

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

623

D/E vessels with at least one eligible measure

€3,176–7,513M

capex range, top measure per vessel (623 of 623 with computable scaling)

1.44–2.55 Mt

annual CO₂ reduction available (vendor-claimed ranges × reported emissions)

Retrofit prospects — worst band first

Vessel	Band	Age	Drop year	Req. reduction 2030	Dock window
HANSA AFRICA · 25-60k	E	16y	2026	78%	Jan 2028
MSC ANNAMARIA · <25k	E	1y	2026	72%	Dec 2027
SEPELU · <25k	E	26y	2026	69%	Aug 2028
C LION · 100-200k	E	21y	2026	59%	Mar 2028
HAMBURG TRADER · <25k	E	21y	2026	55%	Feb 2027

See all 2,510 rated container ships with exposure and dock windows. Sign in →

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.

Sort 🌱 Greenest first 🔧 Least efficient first — retrofit candidates

Size (TEU)

All sizes < 3,000 TEU 3k – 8k TEU 8k – 14k TEU > 14,000 TEU

Year

2025 2024

2,076

vessels ranked

2.25

greenest (g CO₂/dwt·nm)

8.41

segment median

#	Vessel	Size (TEU)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
1401	CMA CGM ALIAGA IMO 9323039	3,586 TEU	2008	247 m	STX - 9 K80MC-C	10.9	D
1402	MELCHIOR SCHULTE IMO 9676723	2,339 TEU	2015	189 m	Doosan - 6G60ME-C9	10.9	D
1403	MSC ANISHA R. IMO 9227297	4,112 TEU	2002	281 m	Sulzer - 9RTA96C	11.0	D
1404	EGY CROWN IMO 9216107	1,129 TEU	2000	159 m	MAN - 7S50MC	11.0	D
1405	CMA CGM WHITE IMO 9756092	2,257 TEU	2016	185 m	Hudong Heavy Machinery - MAN B&W 6G60ME-C9.5	11.0	D
1406	TORONTO EXPRESS IMO 9253727	4,402 TEU	2003	294 m	8K90MC-C	11.0	D
1407	NEXOE MAERSK IMO 9220885	2,226 TEU	2001	199 m	Sulzer - 7RTA84C	11.0	D
1408	LETO IMO 9311880	3,091 TEU	2006	220 m	MAN - 7K80MC-C	11.0	D
1409	MSC JULIA R. IMO 9227338	4,112 TEU	2002	281 m	Sulzer - 9RTA96C	11.0	D
1410	AS SILJE IMO 9813826	1,750 TEU	2019	172 m	Hudong Heavy Machinery - 6RT-flex58T-E	11.0	D
1411	OOCL MONTREAL IMO 9253739	4,402 TEU	2003	294 m	8K90MC-C	11.0	D
1412	MSC RADIANT III IMO 9235402	2,452 TEU	2001	208 m	Sulzer - 6RTA72U	11.1	D
1413	CMA CGM AMERICA IMO 9295971	4,043 TEU	2006	268 m	Sulzer - 10RTA96C	11.1	D
1414	CMA CGM ISKENDERUN IMO 9321902	3,586 TEU	2007	247 m	STX - 9 K80MC-C	11.1	D
1415	CMA CGM LOUGA IMO 9745550	2,487 TEU	2018	195 m	MAN - 6G60ME-C9	11.1	D
1416	VALENTINA IMO 9344722	1,853 TEU	2007	179 m	MAN - 6L70ME-C	11.1	D
1417	CMA CGM SAN ANTONIO IMO 9294173	2,824 TEU	2005	222 m	MAN - 7K80MC-C	11.1	D
1418	CINZIA A IMO 9226516	2,452 TEU	2001	200 m	Hyundai - 7 L 70 MC	11.1	D
1419	ZHONG GU NAN HAI IMO 9842310	1,908 TEU	2019	172 m	Wärtsilä - 6RT-flex58T-E	11.1	D
1420	STANLEY A IMO 9303807	2,824 TEU	2003	222 m	Hyundai - 7K80MC-C	11.1	D
1421	MSC KATYA R. IMO 9227302	4,112 TEU	2002	281 m	Sulzer - 9RTA96C	11.1	D
1422	CONTAINERSHIPS BOREALIS IMO 9866249	1,380 TEU	2015	170 m	Wärtsilä - 7RT-flex50DF	11.1	D
1423	ECO OSTRO IMO 9959565	1,170 TEU	2024	148 m	5S50ME-C9-LGIM-coEGR	11.1	D
1424	MARGARETE SCHULTE IMO 9302944	2,602 TEU	2006	210 m	STX - 8 S 70 MC-C	11.2	D
1425	CMA CGM LOME IMO 9539494	3,421 TEU	2013	228 m	Wärtsilä - 6RT-flex82C	11.2	D
1426	AZARGOUN IMO 9283019	2,478 TEU	2003	207 m	Wärtsilä - 7 RTA 72 U-B	11.2	D
1427	SAFESEA YASH IMO 9303778	3,398 TEU	2007	223 m	MAN - 8K80 MC-C	11.2	D
1428	MONTREAL EXPRESS IMO 9253741	4,402 TEU	2003	294 m	8K90MC-C	11.2	D
1429	OKEE CUNO IMO 9406960	1,740 TEU	2008	177 m	Hudong Heavy Machinery - 7S60MC-C MK VIII	11.3	D
1430	MED SAMSUN IMO 9225794	2,226 TEU	2003	196 m	MAN - 8S70MC-C	11.3	D
1431	MSC MANASVI II IMO 9347724	1,440 TEU	2006	170 m	MAN - 8S50MC-C	11.3	D
1432	MARTHA A IMO 9299484	2,474 TEU	2003	207 m	MAN - 7L70MC	11.3	D
1433	HAMMONIA BALTICA IMO 9481532	2,790 TEU	2011	225 m	MAN - 7L70MC-C	11.3	D
1434	DIMITRIS C IMO 9210074	3,430 TEU	2001	243 m	Sulzer - 7RTA84C	11.3	D
1435	CONSTANTINOS P II IMO 9461623	4,249 TEU	2011	261 m	STX - STX MAN B&W; 8K90ME-C6	11.3	D
1436	LUCIE SCHULTE IMO 9301926	2,602 TEU	2006	210 m	STX - 8 S 70 MC-C	11.3	D
1437	DELPHIS GDANSK IMO 9780653	1,924 TEU	2017	178 m	STX - 6S60ME-C8	11.3	D
1438	MSC HARMONY III IMO 9309411	2,824 TEU	2006	222 m	Hyundai - 7K80MC-C	11.3	D
1439	MAERSK NEWCASTLE IMO 9215878	2,556 TEU	2001	210 m	Hyundai - 7RTA72U	11.3	D
1440	MSC SANTA MARIA IMO 9290426	5,042 TEU	2005	295 m	Hyundai - 8 RTA 96 C-B	11.3	D
1441	DELPHIS FINLAND IMO 9763722	1,924 TEU	2016	178 m	STX - 6S60ME-C8	11.3	D
1442	GREEN OCEAN IMO 9865960	1,800 TEU	2019	172 m	MAN - 6S60ME-C10	11.3	D
1443	CMA CGM SAMBHAR IMO 9295969	4,043 TEU	2006	268 m	Sulzer - 10RTA96C	11.3	D
1444	ODYSSEUS IMO 9315824	2,824 TEU	2006	222 m	Hyundai - 7K80MC-C	11.3	D
1445	MAX SCHULTE IMO 9676711	2,339 TEU	2015	189 m	Doosan - 6G60ME-C9	11.4	D
1446	ZHONG GU SHAN DONG IMO 9333060	3,400 TEU	2007	223 m	Hyundai - 8 K 80 MC-C	11.4	D
1447	VIOLETTA IMO 9344710	1,853 TEU	2007	179 m	MAN - 6L70ME-C	11.4	D
1448	MAERSK NEW DELHI IMO 9402627	2,500 TEU	2009	209 m	MAN - 6K80ME-C	11.5	D
1449	CMA CGM AMBARLI IMO 9436422	3,534 TEU	2008	231 m	Hyundai - 7 K 90 MC-C	11.5	D
1450	MACAO IMO 9362724	1,794 TEU	2008	180 m	Hudong Heavy Machinery - 7 S 60 MC-C	11.5	D

Page 29 of 41 — 2,034 vessels

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Engine intelligence

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.

Emission-friendly engine ranking

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.