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)

#1,196 of 2,221 container ships

CO₂ intensity

8.7 g CO₂/dwt·nm

vs segment average (9.9)

-12% 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

1,079 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

2,208

vessels ranked

2.88

greenest (g CO₂/dwt·nm)

8.26

segment median

#	Vessel	Size (TEU)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
1151	CMA CGM BARRACUDA IMO 9322475	5,090 TEU	2007	294 m	Hyundai - 9 K 90 MC-C	8.5	C
1152	MSC LORENA IMO 9320403	4,870 TEU	2006	275 m	MAN - 7K98MC-C	8.5	C
1153	MSC NAHARA IMO 9955789	3,700 TEU	2024	210 m	Dalian Marine Diesel Co Ltd - China 6G70ME-C10-coEGR	8.5	C
1154	MEHUIN IMO 9400100	6,300 TEU	2011	306 m	Wärtsilä - 10RT-flex96C	8.5	C
1155	MAERSK BOGOR IMO 9394882	3,100 TEU	2009	223 m	Hyundai - 7K80ME-C	8.5	C
1156	YM EVOLUTION IMO 9496460	4,662 TEU	2009	259 m	MAN - 7K98ME	8.5	C
1157	IRENES RESPECT IMO 9964144	2,824 TEU	2024	186 m	HD Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-HPSCR	8.5	C
1158	FELIXSTOWE IMO 9227039	4,253 TEU	2002	260 m	8K90MC-C	8.5	C
1159	X-PRESS ANTLIA IMO 9875381	2,700 TEU	2023	200 m	MAN - 6G60ME-C9	8.5	C
1160	DACHAN BAY EXPRESS IMO 9539664	4,664 TEU	2012	260 m	CSSC - 8K80ME-C9	8.5	C
1161	AS NURIA IMO 9391787	3,534 TEU	2009	231 m	CSSC - 7K90MC-C MK VI	8.5	C
1162	GSL NICOLETTA IMO 9229348	6,200 TEU	2002	300 m	Doosan - 12RTA96C-C	8.5	C
1163	CMA CGM ALTAMIRA IMO 9961350	2,000 TEU	2024	204 m	6S60ME-C10-GI	8.5	C
1164	CMA CGM TIVOLI IMO 9961312	2,000 TEU	2024	204 m	Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-GI	8.5	C
1165	MSC SARYA III IMO 9241451	2,478 TEU	2003	207 m	Wärtsilä - 7 RTA 72 U-B	8.5	C
1166	DUBAI EXPRESS IMO 9440825	4,255 TEU	2009	262 m	Wärtsilä - 8RTA82C	8.6	C
1167	HYUNDAI SHANGHAI IMO 9305647	6,800 TEU	2006	304 m	MAN - 12K98MC-C	8.6	C
1168	SEASPAN LUMACO IMO 9443487	4,249 TEU	2009	261 m	MAN - 8K90MC-C	8.6	C
1169	MSC DORINE V IMO 9301328	5,089 TEU	2005	294 m	Hyundai - 9 K 90 MC-C	8.6	C
1170	ZIM PACIFIC IMO 9440837	4,255 TEU	2009	262 m	Hyundai - 8RTA82C	8.6	C
1171	CMA CGM VOLTAIRE IMO 9635652	6,900 TEU	2011	270 m	HHI - 8RT-FLEX82T	8.6	C
1172	MAERSK BATUR IMO 9402029	3,100 TEU	2009	223 m	Hyundai - 7K80ME-C	8.6	C
1173	CMA CGM MONTOIR IMO 9348443	4,294 TEU	2008	264 m	MAN - 8K90MC-C	8.6	C
1174	NYK DAEDALUS IMO 9337614	4,888 TEU	2007	294 m	MAN - 9K98MC-C	8.6	C
1175	CONTI COURAGE IMO 9293789	8,084 TEU	2005	334 m	Doosan - 12 RTA 96 C-B	8.6	C
1176	CMA CGM ALIAGA IMO 9323039	3,586 TEU	2008	247 m	STX - 9 K80MC-C	8.6	C
1177	CMA CGM MERMAID IMO 9961283	2,000 TEU	2024	204 m	Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-GI	8.6	C
1178	MAERSK CHICAGO IMO 9332975	6,188 TEU	2007	299 m	Wärtsilä - 10RT-flex96C	8.6	C
1179	PORT GDYNIA IMO 9334387	3,091 TEU	2011	220 m	MAN - 7K80MC-C	8.6	C
1180	MSC VERACRUZ V IMO 9287924	5,060 TEU	2005	294 m	Hyundai - 9 K 90 MC-C	8.7	C
1181	MSC ANAHITA IMO 9302085	5,800 TEU	2006	285 m	MAN - 11K98MC	8.7	C
1182	SEASPAN EMERALD IMO 9407134	5,041 TEU	2009	294 m	Wärtsilä - 8RTA96C	8.7	C
1183	MAERSK IOWA IMO 9298686	4,154 TEU	2006	292 m	Sulzer - 8RT-flex96C	8.7	C
1184	CMA CGM BLUE WHALE IMO 9317963	5,095 TEU	2007	294 m	MAN - 10K98MC-C	8.7	C
1185	MOMBASA EXPRESS IMO 9495777	4,620 TEU	2013	260 m	MAN - 8K80ME-C	8.7	C
1186	MAERSK BAHAMAS IMO 9697026	2,500 TEU	2016	195 m	Hudong Heavy Machinery - 6G60ME-C9	8.7	C
1187	CMA CGM CONGO IMO 9679892	9,448 TEU	2015	300 m	MAN - 8S90ME-C9	8.7	C
1188	NORTHWOOD IMO 9222118	2,550 TEU	2001	210 m	Hyundai - 7 RTA 72 U-B	8.7	C
1189	ATLANTICA POWER IMO 9467055	4,616 TEU	2010	264 m	MAN - 8K90MC-C	8.7	C
1190	MSC ORNELLA IMO 9281267	5,059 TEU	2004	294 m	HSD ENGINE CO., LTD. 9 K 90 MC-C	8.7	C
1191	MSC ROSARIA IMO 9320453	4,870 TEU	2007	275 m	MAN - 7K98MC-C	8.7	C
1192	CMA CGM MENDELSSOHN IMO 9449106	3,635 TEU	2012	240 m	MAN - 7K90MC-C	8.7	C
1193	VENETIA IMO 9400203	4,043 TEU	2010	269 m	Wärtsilä - 7RT-FLEX96C	8.7	C
1194	CMA CGM SEMARANG IMO 9377133	2,700 TEU	2007	215 m	MAN - 7L70MC-C	8.7	C
1195	LANGENESS IMO 9944778	1,781 TEU	2023	172 m	MAN - 6S60ME-C10	8.7	C
1196	MSC GRETA III IMO 9415296	2,732 TEU	2008	211 m	MAN - 7S70MC-C	8.8	C
1197	MSC LIPSIA III IMO 9237498	3,091 TEU	2004	220 m	CEGIELSKI, POZNAN POLAND 7 K 80 MC-C	8.8	C
1198	PANDA 008 IMO 9248162	6,078 TEU	2003	279 m	Hyundai - 10 RTA 96 C	8.8	C
1199	MSC ARCHIMIDIS VIII IMO 9315379	7,943 TEU	2006	318 m	Sulzer - 12RT-flex96C	8.8	C
1200	MAERSK BENGUELA IMO 9355367	3,078 TEU	2009	223 m	Hyundai - 8K80ME-C	8.8	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.