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)

#919 of 2,221 container ships

CO₂ intensity

7.3 g CO₂/dwt·nm

vs segment average (9.9)

-26% 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
899	VALOR IMO 9628154	8,800 TEU	2013	300 m	MAN - 9S90ME-C8	7.2	C
903	CHICAGO EXPRESS IMO 9295268	8,235 TEU	2006	336 m	Hyundai - 12 K 98 ME	7.2	C
902	VENTA MAERSK IMO 9775763	3,600 TEU	2018	200 m	STX - 6G70ME-C8	7.2	C
904	ONE HANNOVER IMO 9302138	8,212 TEU	2006	336 m	MAN - 12K98ME	7.2	C
906	MSC UBERTY VIII IMO 9337444	8,241 TEU	2008	333 m	MAN - 12K98MC	7.3	C
905	CMA CGM TITUS IMO 9450636	8,500 TEU	2010	334 m	MAN - 12K98ME-C	7.3	C
908	MSC SAO PAULO V IMO 9147071	4,688 TEU	1998	294 m	Hyundai - 9 K 90 MC-C	7.3	C
907	MSC REGULUS IMO 9465291	13,100 TEU	2012	366 m	MAN - 12K98ME7	7.3	C
911	LAURA MAERSK IMO 9944546	2,100 TEU	2023	172 m	Hyundai Heavy Industries Co Ltd - South Korea 6G50ME-C9-LGIM	7.3	C
913	ACASTOS IMO 9973004	2,800 TEU	2024	186 m	MAN-B&W 6S60ME-C10	7.3	C
910	HYUNDAI COURAGE IMO 9347542	8,600 TEU	2008	340 m	Wärtsilä - 14RT-flex96C	7.3	C
909	NYK RIGEL IMO 9416977	4,888 TEU	2009	294 m	MAN - 9K98ME-C	7.3	C
912	MSC BARBADOS IMO 9289544	5,047 TEU	2005	294 m	Hyundai - 8 RTA 96 C-B	7.3	C
914	MSC DUBAI VII IMO 9444285	6,310 TEU	2007	295 m	Mitsui - 11K98MC	7.3	C
915	MSC ANTONELLA IMO 9702273	8,800 TEU	2016	300 m	MAN - 9S90ME-C10	7.3	C
916	MSC ABY IMO 9166778	7,226 TEU	1999	347 m	Hitachi - 12K90MC	7.3	C
917	PORTO GERMENO IMO 9260902	5,928 TEU	2002	281 m	MAN - 10K98MC	7.3	C
918	VALIANT IMO 9628178	8,800 TEU	2013	300 m	MAN - 9S90ME-C8	7.3	C
919	CMA CGM CHOPIN IMO 9280603	5,762 TEU	2004	277 m	Hyundai - 10 K 98 MC-C	7.3	C
920	MSC ALTAMIRA IMO 9619426	8,762 TEU	2012	299 m	MAN - 9S90ME-C8	7.3	C
922	MSC TOKYO IMO 9318046	8,204 TEU	2006	334 m	MAN - 12K98MC	7.4	C
921	MSC ESTHI IMO 9304411	9,200 TEU	2006	337 m	Doosan - 12K98MC-C	7.4	C
923	MSC MAXINE IMO 9720287	9,400 TEU	2015	300 m	MAN 9S90ME-C10	7.4	C
924	MSC DORADO VIII IMO 9301495	8,204 TEU	2006	334 m	Hyundai - 12 K98MC	7.4	C
927	ONE HUMBER IMO 9302140	8,212 TEU	2006	336 m	MAN - 12K98ME	7.4	C
926	SFL HAWAII IMO 9679555	6,845 TEU	2014	271 m	HHI - W7X82	7.4	C
925	SANTA TERESA IMO 9430375	7,114 TEU	2011	300 m	Wärtsilä - 8RT-flex96C	7.4	C
929	CMA CGM EXCELLENCE IMO 9948217	6,963 TEU	2023	272 m	Hyundai Heavy Industries Co Ltd - South Korea 7G80ME-C10-HPSCR	7.4	C
928	HYUNDAI BRAVE IMO 9346304	8,562 TEU	2008	340 m	Wärtsilä - 14RT-flex96C	7.4	C
931	PAGE IMO 9215660	3,799 TEU	2001	257 m	Sulzer - 7RTA84C	7.4	C
930	JOLLY ORO IMO 9450313	4,600 TEU	2009	264 m	MAN - 8K90MC-C	7.4	C
932	MSC RENAISSANCE III IMO 9358436	3,400 TEU	2006	223 m	MAN - 8K80 MC-C	7.4	C
934	MSC ANTIGUA IMO 9619476	8,762 TEU	2013	299 m	Hyundai - 9S90ME-C8	7.4	C
935	MSC ELODIE IMO 9704972	8,800 TEU	2015	300 m	MAN - 9S90ME-C9	7.4	C
933	CMA CGM MOZART IMO 9280615	5,762 TEU	2004	277 m	Hyundai - 10 K 98 MC-C	7.4	C
936	MSC ABIDJAN IMO 9618264	8,800 TEU	2013	300 m	Hyundai - 9S90ME-C8	7.4	C
939	CMA CGM RUNDALE IMO 9961300	2,000 TEU	2024	204 m	HD Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-GI	7.4	C
938	CMA CGM ALCAZAR IMO 9335197	5,089 TEU	2007	294 m	MAN - 9K90MC-C	7.4	C
937	MAERSK KENSINGTON IMO 9333010	6,200 TEU	2007	299 m	Doosan - 10RT-flex96C	7.4	C
940	CYPRESS IMO 9461477	8,600 TEU	2011	335 m	Wärtsilä - 12RT-flex96C	7.4	C
941	CMA CGM NINGBO IMO 9295218	7,455 TEU	2005	300 m	Hyundai - 12 K98MC-C	7.4	C
942	CLEMENS SCHULTE IMO 9665671	5,400 TEU	2014	255 m	MAN - 6G80ME-C9	7.4	C
945	CMA CGM ERMITAGE IMO 9961295	2,000 TEU	2024	204 m	HD Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-GI	7.4	C
944	MSC ANS IMO 9282261	4,900 TEU	2004	294 m	HSD ENGINE CO., LTD. 9 K 90 MC-C	7.4	C
943	EVER LIVING IMO 9629031	8,488 TEU	2013	335 m	HHI - 9K98ME7	7.4	C
948	ANAXAGORAS IMO 9972983	2,800 TEU	2022	186 m	MAN-B&W 6S60ME-C10	7.4	C
947	CMA CGM NIAGARA IMO 9722675	9,894 TEU	2015	300 m	MAN - 8S90ME-C9	7.4	C
946	MSC LORETTA IMO 9230490	6,730 TEU	2002	304 m	Hyundai - 10 K 98 MC-C	7.4	C
950	GREENVILLE IMO 9970014	7,200 TEU	2024	272 m	WinGD 6X82	7.5	C
949	NYK DIANA IMO 9337688	4,888 TEU	2008	294 m	MAN - 9K98ME-C	7.5	C

Page 19 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.