Most Emission-Efficient Container Ships

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)

#1,043 of 2,221 container ships

CO₂ intensity

7.9 g CO₂/dwt·nm

vs segment average (9.9)

-21% greener

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

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

2,267

vessels ranked

2.88

greenest (g CO₂/t·nm)

8.38

segment median

#	Vessel	Size (TEU)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
1001	MED AYDIN IMO 9148025	2,908 TEU	1997	196 m	Sulzer - 8RTA72U	7.7	C
1003	MSC BHAVYA V IMO 9297876	5,018 TEU	2005	294 m	Sulzer - 9RTA96C	7.7	C
1002	MAERSK LAMANAI IMO 9527051	8,700 TEU	2013	300 m	Doosan - MAN 9S90ME-C MK8	7.7	C
1006	MSC DAISY IMO 9295165	4,900 TEU	2005	294 m	Doosan - 9 K90MC-C	7.7	C
1008	MSC INGRID IMO 9181651	4,500 TEU	1999	294 m	9K90MC	7.7	C
1005	MSC SWEDEN VI IMO 9231262	5,762 TEU	2002	277 m	Doosan - 12K90MC	7.7	C
1009	MAERSK LOTA IMO 9526954	8,700 TEU	2012	300 m	Doosan - 9S90ME-C	7.7	C
1004	CMA CGM CARL ANTOINE IMO 9729087	9,400 TEU	2017	300 m	CSSC - 9S90ME-C9	7.7	C
1007	SANTA URSULA IMO 9430387	7,114 TEU	2007	300 m	Doosan - 8RT FLEX 96C	7.7	C
1011	LITTLE MERMAID IMO 9946245	1,800 TEU	2022	172 m	MAN - 6S60ME-C10	7.7	C
1010	MSC NAOMI IMO 9704984	8,800 TEU	2015	300 m	MAN - 9S90ME-C9	7.7	C
1012	CMA CGM LISA MARIE IMO 9729099	9,400 TEU	2017	300 m	CSSC - 9S90ME-C9	7.7	C
1013	MSC SANTA MARIA IMO 9290426	5,042 TEU	2005	294 m	Hyundai - 8 RTA 96 C-B	7.7	C
1017	MSC POLINA IMO 9376141	2,500 TEU	2008	209 m	Hudong Heavy Machinery - 7 RT-FLEX 68-B	7.7	C
1016	MOL ENDOWMENT IMO 9333852	4,803 TEU	2007	294 m	Hyundai - 9 K 90 MC-C	7.7	C
1015	BF HAMBURG IMO 9332860	6,350 TEU	2009	293 m	MAN - 11K98MC	7.7	C
1014	CAUQUENES IMO 9687552	9,326 TEU	2015	300 m	MAN - 8S90ME-C10	7.7	C
1018	ZIM CHINA IMO 9389382	4,275 TEU	2008	261 m	Wärtsilä - 7RT-FLEX96C	7.7	C
1021	CMA CGM DOLPHIN IMO 9322487	5,090 TEU	2007	294 m	Hyundai - 9 K 90 MC-C	7.7	C
1020	CMA CGM FIDELIO IMO 9299642	9,809 TEU	2006	349 m	Hyundai - 12 K98MC	7.7	C
1019	GSL SUSAN IMO 9349617	4,363 TEU	2008	260 m	MAN - 8K90MC-C	7.7	C
1023	MSC ANSHIKA VI IMO 9254848	5,680 TEU	2003	275 m	Hyundai - 10K90MC-C	7.8	C
1022	MSC MARIANNA IMO 9226920	6,730 TEU	2002	304 m	Hyundai - 10 K 98 MC-C	7.8	C
1025	MSC QINGDAO IMO 9256470	7,731 TEU	2004	323 m	MAN - 12K98MC-C	7.8	C
1024	CMA CGM EXEMPLARITY IMO 9948229	6,874 TEU	2023	272 m	Hyundai Heavy Industries Co Ltd - South Korea 7G80ME-C10-HPSCR	7.8	C
1026	ZIM VIETNAM IMO 9244922	6,246 TEU	2003	304 m	Hyundai - 10 K 98 MC-C	7.8	C
1027	CMA CGM JACQUES JOSEPH IMO 9729104	9,400 TEU	2017	300 m	CSSC - 9S90ME-C9	7.8	C
1028	MSC JORDAN III IMO 8918980	2,668 TEU	1993	237 m	BREMER VULKAN AG SCHIFFBAU UND MASCHINENFABRIK 7 L 80 MC	7.8	C
1030	MSC CARMEN IMO 9349813	4,860 TEU	2008	275 m	MAN - 7K98MC-C	7.8	C
1029	SAN DIEGO IMO 9398412	7,500 TEU	2010	334 m	MAN - 12K98MC	7.8	C
1031	MSC VILDA X IMO 9146479	7,226 TEU	1998	347 m	Hitachi - 12K90MC	7.8	C
1032	MSC SHANGHAI V IMO 9231822	4,800 TEU	2002	294 m	Hyundai - HYUNDAI - MAN B&W 9K90MC-C	7.8	C
1033	POLAR ECUADOR IMO 9786774	3,884 TEU	2017	230 m	Hyundai - 6S70ME-C8	7.8	C
1035	SANTA ISABEL MAERSK IMO 9444728	7,090 TEU	2007	300 m	Wärtsilä - 8RT-flex96C	7.8	C
1034	MSC MARGARITA IMO 9238741	5,514 TEU	2002	277 m	SAMSUNG HEAVY INDUSTRIES CO., LTD. GEOJE SHIPYARD 12 K 90 MC	7.8	C
1038	EPAMINONDAS IMO 9153862	6,690 TEU	1998	300 m	ISHIKAWAJIMA - 12RTA96C	7.8	C
1037	MSC LAURA IMO 9225665	6,750 TEU	2002	300 m	HSD ENGINE CO., LTD. 10 K 98 MC-C	7.8	C
1039	MSC MANZANILLO V IMO 9289960	5,060 TEU	2005	294 m	Doosan - 9 K90MC-C	7.8	C
1036	MSC AGADIR IMO 9619464	8,762 TEU	2012	299 m	Hyundai - 9S90ME-C8	7.8	C
1040	LODUR IMO 9219381	3,100 TEU	2003	220 m	H. CEGIELSKI-POZNAN S.A. 7 K 80 MC-C	7.8	C
1041	MSC KERRY VII IMO 9221815	6,446 TEU	2001	300 m	Hyundai - 12 K98MC-C	7.8	C
1042	MSC YANG R IMO 9227285	3,744 TEU	2002	257 m	Sulzer - 7RTA84C	7.9	C
1043	LIVORNO EXPRESS IMO 9610157	3,800 TEU	2014	228 m	Wärtsilä - 7RT-flex82C	7.9	C
1044	MAERSK PITTSBURGH IMO 9342176	6,200 TEU	2008	300 m	Doosan - 10RT-flex96C	7.9	C
1046	MSC HONG KONG V IMO 9231810	4,800 TEU	2002	294 m	Hyundai - HYUNDAI - MAN B&W 9K90MC-C	7.9	C
1045	APL MINNESOTA IMO 9350018	5,888 TEU	2008	293 m	MAN - 11K98MC	7.9	C
1048	SHIJING IMO 9348663	5,100 TEU	2007	294 m	MAN - 9K90MC-C	7.9	C
1047	HENRIKA SCHULTE IMO 9535163	5,605 TEU	2011	275 m	MAN - 8K98ME	7.9	C
1050	CMA CGM BETTER WAYS IMO 9950557	6,963 TEU	2023	272 m	HD Hyundai Heavy Industries Co Ltd - South Korea 7G80ME-C10-HPSCR	7.9	C
1049	HMM JAKARTA IMO 9323522	6,763 TEU	2007	304 m	MAN - 12K98MC-C	7.9	C

Page 21 of 45 — 2,221 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.