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 2024. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2024)

#820 of 2,098 container ships

CO₂ intensity

7.4 g CO₂/dwt·nm

vs segment average (10.39)

-28% 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

2,141

vessels ranked

2.25

greenest (g CO₂/t·nm)

8.58

segment median

#	Vessel	Size (TEU)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
801	W KAMPALA IMO 9215311	6,802 TEU	2001	300 m	HHI - 12RTA96C	7.3	B
802	KOBE EXPRESS IMO 9143544	4,612 TEU	1997	294 m	SAMSUNG HEAVY INDUSTRIES CO., LTD. 9 K 90 MC	7.4	B
805	MSC ELLEN IMO 9166780	7,226 TEU	1999	347 m	Hitachi - 12K90MC	7.4	B
804	MSC HEIDI IMO 9309473	8,400 TEU	2006	332 m	MAN - 12K98MC-C	7.4	B
803	MSC SWEDEN VI IMO 9231262	5,762 TEU	2002	277 m	Doosan - 12K90MC	7.4	B
806	ONE HONG KONG IMO 9395161	8,212 TEU	2009	336 m	MAN - 12K98ME	7.4	B
811	APL MEXICO CITY IMO 9632210	9,200 TEU	2011	328 m	Doosan - 10S90ME-C MK9.2 TIER 2	7.4	B
810	COSCO SHANGHAI IMO 9221097	5,618 TEU	2001	280 m	Kawasaki - 10L90MC	7.4	B
809	CMA CGM JEAN GABRIEL IMO 9729128	9,400 TEU	2018	299 m	CSSC - 9S90ME-C8	7.4	B
808	MSC TAERIM IMO 9966984	1,800 TEU	2024	172 m	MAN - 6S60ME-C10	7.4	B
807	MAERSK GIRONDE IMO 9235555	4,318 TEU	2002	292 m	Hyundai - 10K90MC-C MK5	7.4	B
812	SAN DIEGO IMO 9398412	7,500 TEU	2010	334 m	MAN - 12K98MC	7.4	B
813	NYK VESTA IMO 9312808	9,012 TEU	2007	338 m	MAN - 12K98ME	7.4	B
814	SHIJING IMO 9348663	5,100 TEU	2007	294 m	MAN - 9K90MC-C	7.4	B
816	MEHUIN IMO 9400100	6,300 TEU	2011	306 m	Wärtsilä - 10RT-flex96C	7.4	B
815	ZIM VIETNAM IMO 9244922	6,246 TEU	2003	304 m	Hyundai - 10 K 98 MC-C	7.4	B
818	CMA CGM ERMITAGE IMO 9961295	2,000 TEU	2024	204 m	HD Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-GI	7.4	B
817	MSC BETTINA IMO 9399038	10,000 TEU	2010	366 m	Doosan - 12K98MC-C	7.4	B
819	CAPE SCOTT IMO 9950117	2,700 TEU	2023	189 m	Hudong Heavy Machinery Co Ltd - China 7S60ME-C10-HPSCR	7.4	B
822	MSC MATILDE V IMO 9181663	4,500 TEU	1998	294 m	MAN 9K90MC	7.4	B
821	GENOA EXPRESS IMO 9626041	3,800 TEU	2014	228 m	Wärtsilä - 7RT-flex82C	7.4	B
823	KARLSKRONA IMO 9085558	6,000 TEU	1996	318 m	Mitsui - 12K90MC	7.4	B
820	NYK DIANA IMO 9337688	4,888 TEU	2008	294 m	MAN - 9K98ME-C	7.4	B
824	MSC BRUNELLA IMO 9702106	8,819 TEU	2015	300 m	MAN - 9S90ME-C9	7.4	B
826	COSCO ANTWERP IMO 9246396	5,618 TEU	2001	280 m	Kawasaki - 10L90MC MK V	7.4	B
825	MSC GREENWICH IMO 9286267	8,189 TEU	2004	334 m	Hyundai - 12 K98MC	7.4	B
827	NYK RUMINA IMO 9416991	4,888 TEU	2010	294 m	MAN - 9K98ME-C	7.5	B
828	MSC ROMANE IMO 9745653	9,400 TEU	2017	300 m	MAN - 9S90ME-C10	7.5	B
830	MSC MICHIGAN VII IMO 9196864	6,420 TEU	2000	304 m	Hyundai - 10 K 98 MC-C	7.5	B
829	CMA CGM TAGE IMO 9674555	9,365 TEU	2015	300 m	Hyundai - 9S90ME-C9	7.5	B
832	MSC SAMANTHA VI IMO 9110377	5,551 TEU	1996	275 m	Hyundai - 12K90MC-C	7.5	B
831	CMA CGM IMAGINATION IMO 9948231	6,874 TEU	2024	272 m	Hyundai Heavy Industries Co Ltd - South Korea 7G80ME-C10-HPSCR	7.5	B
833	MSC ELA IMO 9282259	4,900 TEU	2004	294 m	HSD ENGINE CO., LTD. 9 K 90 MC	7.5	B
835	MSC SINDY IMO 9336048	9,200 TEU	2007	337 m	MAN - 12K98MC-C	7.5	B
834	ONE HAMMERSMITH IMO 9395147	8,212 TEU	2009	336 m	Kawasaki - 12K98ME	7.5	B
836	RDO CONCORD IMO 9401283	6,500 TEU	2009	304 m	MAN - 10K98MC	7.5	B
838	MSC BRIANNA IMO 9103685	4,507 TEU	1996	294 m	HANJUNG CHANGWON PLANT 8 K 90 MC-C	7.5	B
839	MSC SANTHYA IMO 8913411	2,668 TEU	1991	237 m	BREMER VULKAN AG SCHIFFBAU UND MASCHINENFABRIK 7 L 80 MC	7.5	B
837	MSC LAGOS X IMO 9605152	9,400 TEU	2013	300 m	Hyundai - 9S90ME-C9	7.5	B
841	HELLA IMO 9535137	5,605 TEU	2011	275 m	MAN - 8K98ME	7.5	C
840	MARCOS V IMO 9307059	6,350 TEU	2005	293 m	MAN - 11K98MC	7.5	C
844	MSC NERISSA V IMO 9278155	5,050 TEU	2004	294 m	HSD ENGINE CO., LTD. 9 K 90 MC-C	7.5	C
843	CMA CGM RUNDALE IMO 9961300	2,000 TEU	2024	204 m	HD Hyundai Heavy Industries Co Ltd - South Korea 6S60ME-C10-GI	7.5	C
842	ZIM AMERICA IMO 9244934	6,246 TEU	2003	304 m	Hyundai - 10 K 98 MC-C	7.5	C
849	MSC DENMARK VI IMO 9231250	5,762 TEU	2002	277 m	MAN - 12 K 90 MC	7.5	C
848	MSC CHANNE IMO 9710438	8,800 TEU	2015	300 m	MAN - 9S90ME-C10	7.5	C
847	BREMEN IMO 9450387	8,600 TEU	2009	334 m	Hyundai - HHI MAN B&W; 12K98MC-C7	7.5	C
846	MSC ORIANE IMO 9372482	5,782 TEU	2008	277 m	MAN - 12 K 90 MC	7.5	C
845	MSC VIDHI IMO 9238739	5,514 TEU	2001	277 m	Doosan - 12K90MC	7.5	C
850	MAERSK GENOA IMO 9739680	10,100 TEU	2016	337 m	CSSC - 10S90ME-C9	7.5	C

Page 17 of 42 — 2,098 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.