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.

Segment rank (2025)

#1,179 of 2,221 container ships

CO₂ intensity

8.6 g CO₂/dwt·nm

vs segment average (9.88)

-13% greener

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

CII band distribution

1,081 at D/E

A 310B 415C 704D 602E 479

2,510 rated vessels · 463 of the D/E set dock within 12 months

Docking pipeline — D/E vessels per quarter

'27 Q1

'27 Q2

'27 Q3

'27 Q4

112

'28 Q1

'28 Q2

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

624

D/E vessels with at least one eligible measure

€3,295–7,790M

capex range, top measure per vessel (624 of 624 with computable scaling)

1.48–2.63 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
SEPELU · <25k	E	26y	2026	69%	Aug 2028
MSC SABRINA III · <25k	E	37y	2026	61%	Mar 2027
NILEDUTCH LION · 100-200k	E	18y	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

2,208

vessels ranked

2.88

greenest (g CO₂/dwt·nm)

8.22

segment median

#	Vessel	Size (TEU)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
1151	MSC TAERIM IMO 9966984	1,800 TEU	2024	172 m	MAN - 6S60ME-C10	8.4	C
1152	FOS EXPRESS IMO 9348699	5,100 TEU	2008	294 m	MAN - 9K90MC-C	8.4	C
1153	SONGA PANTHER IMO 9947732	1,692 TEU	2023	172 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 6S60ME-C10.5	8.5	C
1154	PORTO CHELI IMO 9221839	6,734 TEU	2001	300 m	Hyundai - 12 K98MC-C	8.5	C
1155	BHARANI IMO 9448827	3,646 TEU	2010	240 m	Hyundai - 7 K 90 MC-C	8.5	C
1156	MSC JOY IMO 9039250	1,933 TEU	1992	202 m	Sulzer - 6RTA76	8.5	C
1157	MAERSK MONTE PASCOAL IMO 9283203	4,000 TEU	2005	272 m	Wärtsilä - 8RTA96C	8.5	C
1158	MSC LORENA IMO 9320403	4,870 TEU	2006	275 m	MAN - 7K98MC-C	8.5	C
1159	MSC NAHARA IMO 9955789	1,800 TEU	2024	210 m	Dalian Marine Diesel Co Ltd - China 6G70ME-C10-coEGR	8.5	C
1160	CMA CGM BARRACUDA IMO 9322475	5,090 TEU	2007	294 m	Hyundai - 9 K 90 MC-C	8.5	C
1161	MEHUIN IMO 9400100	6,300 TEU	2011	306 m	Wärtsilä - 10RT-flex96C	8.5	C
1162	MAERSK BOGOR IMO 9394882	3,100 TEU	2009	223 m	Hyundai - 7K80ME-C	8.5	C
1163	YM EVOLUTION IMO 9496460	4,662 TEU	2014	259 m	MAN - 7K98ME	8.5	C
1164	FELIXSTOWE IMO 9227039	4,253 TEU	2002	260 m	8K90MC-C	8.5	C
1165	IRENES RESPECT IMO 9964144	2,824 TEU	2024	186 m	HD Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-HPSCR	8.5	C
1166	X-PRESS ANTLIA IMO 9875381	2,700 TEU	2023	200 m	MAN - 6G60ME-C9	8.5	C
1167	DACHAN BAY EXPRESS IMO 9539664	4,620 TEU	2012	260 m	CSSC - 8K80ME-C9	8.5	C
1168	AS NURIA IMO 9391787	3,534 TEU	2009	231 m	CSSC - 7K90MC-C MK VI	8.5	C
1169	GSL NICOLETTA IMO 9229348	6,200 TEU	2002	300 m	Doosan - 12RTA96C-C	8.5	C
1170	CMA CGM ALTAMIRA IMO 9961350	2,000 TEU	2024	204 m	6S60ME-C10-GI	8.5	C
1171	MSC ANAHITA IMO 9302085	5,642 TEU	2006	285 m	MAN - 11K98MC	8.5	C
1172	MSC SARYA III IMO 9241451	2,478 TEU	2003	207 m	Wärtsilä - 7 RTA 72 U-B	8.5	C
1173	CMA CGM TIVOLI IMO 9961312	2,000 TEU	2024	204 m	Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-GI	8.5	C
1174	HYUNDAI SHANGHAI IMO 9305647	6,800 TEU	2006	304 m	MAN - 12K98MC-C	8.6	C
1175	DUBAI EXPRESS IMO 9440825	4,300 TEU	2009	262 m	Wärtsilä - 8RTA82C	8.6	C
1176	MSC DORINE V IMO 9301328	5,060 TEU	2005	294 m	Hyundai - 9 K 90 MC-C	8.6	C
1177	SEASPAN LUMACO IMO 9443487	4,250 TEU	2009	261 m	MAN - 8K90MC-C	8.6	C
1178	ZIM PACIFIC IMO 9440837	4,300 TEU	2009	262 m	Hyundai - 8RTA82C	8.6	C
1179	CMA CGM VOLTAIRE IMO 9635652	6,900 TEU	2013	270 m	HHI - 8RT-FLEX82T	8.6	C
1180	MAERSK BATUR IMO 9402029	3,100 TEU	2009	223 m	Hyundai - 7K80ME-C	8.6	C
1181	NYK DAEDALUS IMO 9337614	4,888 TEU	2007	294 m	MAN - 9K98MC-C	8.6	C
1182	CMA CGM MONTOIR IMO 9348443	4,319 TEU	2008	264 m	MAN - 8K90MC-C	8.6	C
1183	CONTI COURAGE IMO 9293789	8,084 TEU	2005	334 m	Doosan - 12 RTA 96 C-B	8.6	C
1184	CMA CGM MERMAID IMO 9961283	2,000 TEU	2024	204 m	Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-GI	8.6	C
1185	CMA CGM ALIAGA IMO 9323039	3,500 TEU	2008	247 m	STX - 9 K80MC-C	8.6	C
1186	MAERSK CHICAGO IMO 9332975	6,188 TEU	2007	299 m	Wärtsilä - 10RT-flex96C	8.6	C
1187	MSC VERACRUZ V IMO 9287924	5,060 TEU	2005	294 m	Hyundai - 9 K 90 MC-C	8.7	C
1188	SEASPAN EMERALD IMO 9407134	5,041 TEU	2009	294 m	Wärtsilä - 8RTA96C	8.7	C
1189	MAERSK IOWA IMO 9298686	4,154 TEU	2006	292 m	Sulzer - 8RT-flex96C	8.7	C
1190	CMA CGM BLUE WHALE IMO 9317963	5,078 TEU	2007	294 m	MAN - 10K98MC-C	8.7	C
1191	MOMBASA EXPRESS IMO 9495777	4,600 TEU	2013	260 m	MAN - 8K80ME-C	8.7	C
1192	MAERSK BAHAMAS IMO 9697026	2,500 TEU	2016	195 m	Hudong Heavy Machinery - 6G60ME-C9	8.7	C
1193	MSC YORK VII IMO 9196838	6,420 TEU	2000	304 m	Hyundai - 10 K 98 MC-C	8.7	C
1194	NORTHWOOD IMO 9222118	2,530 TEU	1999	210 m	Hyundai - 7 RTA 72 U-B	8.7	C
1195	CMA CGM CONGO IMO 9679892	9,220 TEU	2015	300 m	MAN - 8S90ME-C9	8.7	C
1196	MSC SYDNEY VI IMO 9200677	5,618 TEU	1999	279 m	Sulzer - 10RTA96C	8.7	C
1197	ATLANTICA POWER IMO 9467055	4,600 TEU	2010	264 m	MAN - 8K90MC-C	8.7	C
1198	MSC ROSARIA IMO 9320453	4,860 TEU	2007	275 m	MAN - 7K98MC-C	8.7	C
1199	MSC ORNELLA IMO 9281267	4,900 TEU	2004	294 m	HSD ENGINE CO., LTD. 9 K 90 MC-C	8.7	C
1200	CMA CGM SEMARANG IMO 9377133	2,700 TEU	2007	215 m	MAN - 7L70MC-C	8.7	C

Page 24 of 44 — 2,163 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 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.

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.