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)

#687 of 2,098 container ships

CO₂ intensity

6.9 g CO₂/dwt·nm

vs segment average (10.39)

-33% 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
652	MSC AGRIGENTO IMO 9618276	8,800 TEU	2013	300 m	Hyundai - 9S90ME-C8	6.8	B
651	GUAYAQUIL EXPRESS IMO 9777620	10,818 TEU	2017	333 m	MAN - 7S90ME-C9	6.8	B
653	ONE OLYMPUS IMO 9312987	8,628 TEU	2008	336 m	Wärtsilä - 12RT-flex96C	6.8	B
654	MSC CATERINA IMO 9705005	8,800 TEU	2015	300 m	MAN - 9S90ME-C9	6.8	B
656	COLORADO EXPRESS IMO 9349502	6,435 TEU	2008	306 m	Wärtsilä - 11RT-flex96C	6.8	B
655	MAERSK SAN VICENTE IMO 9699206	9,000 TEU	2014	300 m	HHI - W9X82	6.8	B
657	SUAPE EXPRESS IMO 9332858	6,350 TEU	2008	293 m	Diesel United - 12RTA96C	6.8	B
658	MSC ELEONORA III IMO 9064750	2,480 TEU	1994	203 m	KOREA HEAVY INDUSTRIES & CONSTRUCTION, CHANGWON SOUTH KOREA 7 S 70 MC	6.8	B
660	BEIJING IMO 9308508	9,383 TEU	2006	351 m	Hyundai - 12 K98MC	6.8	B
659	COLOMBIA EXPRESS IMO 9635664	6,900 TEU	2013	270 m	Hyundai - 8S80ME-C9.2	6.8	B
662	CSCL MARS IMO 9467287	13,300 TEU	2011	366 m	MAN - 12K98ME-C	6.8	B
661	HYUNDAI VOYAGER IMO 9347580	4,728 TEU	2008	294 m	Wärtsilä - 8RT-flex96C	6.8	B
663	MSC GISELLE IMO 9720196	9,400 TEU	2015	300 m	MAN - 9S90ME-C10	6.8	B
665	MEGALOPOLIS IMO 9477799	4,800 TEU	2013	255 m	STX - 8K90MC-C	6.8	B
664	MSC SHAY IMO 9393022	8,562 TEU	2009	340 m	Wärtsilä - 14RT-flex96C	6.8	B
666	MSC LISBON IMO 9304459	9,200 TEU	2007	337 m	MAN - 12K98MC-C	6.9	B
668	TRAIGUEN IMO 9627904	8,704 TEU	2013	300 m	MAN - 9S90ME-C8	6.9	B
669	MSC MICHELA IMO 9720512	9,411 TEU	2016	300 m	Hyundai - 9S90ME-C10	6.9	B
667	MSC SHANNON III IMO 8913423	2,668 TEU	1991	237 m	BREMER VULKAN AG SCHIFFBAU UND MASCHINENFABRIK 7 L 80 MC	6.9	B
671	MSC ROBERTA V IMO 9038907	4,422 TEU	1993	294 m	Hyundai - 9 K 90 MC	6.9	B
670	CISNES IMO 9687576	9,326 TEU	2015	300 m	MAN - 8S90ME-C10	6.9	B
672	MSC ELODIE IMO 9704972	8,800 TEU	2015	300 m	MAN - 9S90ME-C9	6.9	B
674	CAPE HELLAS IMO 9857444	2,700 TEU	2021	186 m	MAN - 6G60ME-C9	6.9	B
673	APL MIAMI IMO 9597549	9,200 TEU	2014	328 m	Doosan - DOOSAN-MAN 10S90ME-C9.2	6.9	B
675	OOCL EUROPE IMO 9300805	8,063 TEU	2006	323 m	Doosan - 12K98MC-C	6.9	B
677	MAERSK DETROIT IMO 9333034	6,200 TEU	2008	299 m	Doosan - 10RT-flex96C	6.9	B
676	MAERSK MAKUTU IMO 9318319	4,154 TEU	2007	292 m	Wärtsilä - 8RT-flex96C	6.9	B
678	NYK OCEANUS IMO 9312975	8,628 TEU	2007	336 m	Diesel United - 12RTflex96C-B	6.9	B
679	CMA CGM CALLISTO IMO 9410753	11,400 TEU	2010	363 m	MAN - 12K98ME-C	6.9	B
681	MSC AVNI IMO 9756729	9,962 TEU	2017	314 m	Doosan - 8G95ME-C9	6.9	B
680	MISSOURI EXPRESS IMO 9349552	6,921 TEU	2008	306 m	Wärtsilä - 11RT-flex96C	6.9	B
682	EVER LENIENT IMO 9604146	8,452 TEU	2014	335 m	MAN - 9K98ME7	6.9	B
683	MSC ALTAMIRA IMO 9619426	8,762 TEU	2012	299 m	MAN - 9S90ME-C8	6.9	B
685	CMA CGM GANGES IMO 9718117	10,000 TEU	2013	300 m	MAN - 9S90ME-C9	6.9	B
684	KMARIN ATLANTICA IMO 9632507	4,622 TEU	2013	250 m	Wärtsilä - 6RT-flex82T	6.9	B
686	DELAWARE EXPRESS IMO 9349514	6,500 TEU	2008	306 m	Wärtsilä - 11RT-flex96C	6.9	B
689	ONE HOUSTON IMO 9566382	8,930 TEU	2012	335 m	Kawasaki - 9K98ME-MKVI	6.9	B
688	MSC STELLA IMO 9279989	6,724 TEU	2004	304 m	Hyundai - 10 K 98 MC-C	6.9	B
687	HYUNDAI FORCE IMO 9347566	8,566 TEU	2008	340 m	Wärtsilä - 14RT-flex96C	6.9	B
690	ONE HONOLULU IMO 9588079	8,930 TEU	2012	335 m	Mitsui - 9K98ME-MKVI	6.9	B
693	EXPRESS ARGENTINA IMO 9443011	3,459 TEU	2010	222 m	Hyundai - HHI-WART.7RT-FLEX82C	6.9	B
692	CMA CGM BOLDNESS IMO 9948243	6,874 TEU	2021	272 m	Hyundai Heavy Industries Co Ltd - South Korea 7G80ME-C10-HPSCR	6.9	B
691	CMA CGM COLUMBA IMO 9410789	11,400 TEU	2011	363 m	MAN - 12K98ME-C	6.9	B
699	MSC PALAK IMO 9735206	9,400 TEU	2016	300 m	MAN - 9S90ME-C10	6.9	B
698	CMA CGM MOLIERE IMO 9401099	6,570 TEU	2009	300 m	MAN - 10K98MC-C	6.9	B
697	HUBERT SCHULTE IMO 9535204	5,605 TEU	2012	275 m	MAN - 8K98ME	6.9	B
696	MSC MUNDRA VIII IMO 9294989	8,400 TEU	2005	332 m	MAN - 12K98ME-C	6.9	B
695	MSC SASHA IMO 9720500	8,800 TEU	2016	300 m	Hyundai - 9S90ME-C10	6.9	B
694	MSC NATASHA XIII IMO 9463035	10,000 TEU	2011	366 m	MAN - 12K98MC	6.9	B
700	MSC JULIE IMO 9704996	8,800 TEU	2015	300 m	MAN - 9S90ME-C9	7.0	B

Page 14 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.