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)

#870 of 2,221 container ships

CO₂ intensity

7.1 g CO₂/dwt·nm

vs segment average (9.9)

-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

2,267

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
850	CMA CGM MOLIERE IMO 9401099	6,570 TEU	2009	300 m	MAN - 10K98MC-C	7.0	B
852	CMA CGM TOKYO IMO 9629380	6,622 TEU	2013	271 m	STX - 6S80ME-C	7.0	B
853	EVER LENIENT IMO 9604146	8,452 TEU	2014	335 m	MAN - 9K98ME7	7.0	B
855	AL SAFAT IMO 9349497	6,435 TEU	2008	306 m	Wärtsilä - 11RT-flex96C	7.0	B
854	KOTA KAMIL IMO 9307413	3,081 TEU	2006	233 m	Mitsui - 7S70MC-C	7.0	B
856	CHENNAI EXPRESS IMO 9306158	6,539 TEU	2006	304 m	MAN - 10K98ME	7.0	B
859	MSC MAEVA IMO 9289128	8,034 TEU	2005	325 m	Sulzer - 12RTA96C	7.0	B
858	MSC VEGA IMO 9465265	13,100 TEU	2012	366 m	MAN - 12K98ME7	7.0	B
857	MAERSK MAKUTU IMO 9318319	4,154 TEU	2007	292 m	Wärtsilä - 8RT-flex96C	7.0	B
860	PANDA 006 IMO 9677026	6,900 TEU	2013	270 m	HHI - 8RT-FLEX82T	7.1	B
861	MAERSK NAKURU IMO 9356103	2,478 TEU	2005	210 m	Doosan - 7L70ME-C	7.1	B
862	AL MANAMAH IMO 9349538	6,435 TEU	2008	306 m	Wärtsilä - 11RT-flex96C	7.1	B
863	ONE TRITON IMO 9356713	6,661 TEU	2008	304 m	MAN - 11K98ME-C	7.1	B
865	NYK VESTA IMO 9312808	9,012 TEU	2007	338 m	MAN - 12K98ME	7.1	B
864	NHAVA SHEVA EXPRESS IMO 9406738	9,954 TEU	2011	350 m	Wärtsilä - 12RT-flex96C	7.1	B
866	MAERSK STADELHORN IMO 9726671	9,962 TEU	2015	300 m	Hyundai - 9S90ME-C9	7.1	B
867	MSC SANDRA IMO 9203954	4,340 TEU	2000	274 m	Sulzer - 8RTA84C	7.1	B
868	MSC AJACCIO IMO 9605267	9,400 TEU	2014	300 m	MAN - 9S90ME-C9	7.1	B
869	MSC PALAK IMO 9735206	9,400 TEU	2016	300 m	MAN - 9S90ME-C10	7.1	B
873	MSC TIANPING IMO 9305489	8,204 TEU	2006	334 m	Hyundai - 12 K98MC	7.1	B
872	MUNDRA EXPRESS IMO 9408865	9,954 TEU	2011	350 m	Wärtsilä - 12RT-flex96C	7.1	B
871	MSC MUNDRA VIII IMO 9294989	8,400 TEU	2005	332 m	MAN - 12K98ME-C	7.1	B
870	HAIPHONG EXPRESS IMO 9778129	10,100 TEU	2018	336 m	CSSC - 10S90ME-C9	7.1	B
874	JOLLY BIANCO IMO 9320427	4,860 TEU	2006	283 m	MAN - 7K98MC-C	7.1	B
876	OOCL EUROPE IMO 9300805	8,063 TEU	2006	323 m	Doosan - 12K98MC-C	7.1	B
875	JOLLY VERDE IMO 9320441	4,860 TEU	2007	283 m	MAN - 7K98MC-C	7.1	B
877	MEDITERRANEAN EXPRESS IMO 9622019	4,800 TEU	2014	250 m	MAN - 6S80ME-C9	7.1	B
880	MED BEYKOZ IMO 9064748	2,480 TEU	1994	203 m	KOREA HEAVY INDUSTRIES & CONSTRUCTION, CHANGWON SOUTH KOREA 7 S 70 MC	7.1	B
879	CMA CGM JEAN GABRIEL IMO 9729128	9,400 TEU	2018	299 m	CSSC - 9S90ME-C8	7.1	B
878	MSC AMALFI IMO 9605279	9,400 TEU	2014	300 m	MAN - 9S90ME-C9	7.1	B
881	MAERSK PANGANI IMO 9786097	5,300 TEU	2021	238 m	MAN - 6G80ME-C9	7.2	B
882	MSC SHANNON III IMO 8913423	2,668 TEU	1991	237 m	BREMER VULKAN AG SCHIFFBAU UND MASCHINENFABRIK 7 L 80 MC	7.2	B
883	MSC BUSAN IMO 9289087	8,034 TEU	2005	325 m	Doosan - 12 RTA 96 C-B	7.2	B
884	MSC RANIA VIII IMO 9309447	8,400 TEU	2005	332 m	Doosan - 12K98MC-C	7.2	B
885	ONE HENRY HUDSON IMO 9302176	8,212 TEU	2008	336 m	MAN - 12K98ME	7.2	B
886	NYK VIRGO IMO 9312810	9,012 TEU	2007	338 m	MAN - 12K98ME	7.2	B
887	BRIGHTON IMO 9332846	6,350 TEU	2008	293 m	MAN - 11K98MC	7.2	B
888	CATHERINE C IMO 9969998	7,200 TEU	2024	272 m	WinGD 6X82	7.2	B
890	MSC ANZU IMO 9710426	8,800 TEU	2015	300 m	MAN - 9S90ME-C9	7.2	C
889	COSCO ANTWERP IMO 9246396	5,618 TEU	2001	280 m	Kawasaki - 10L90MC MK V	7.2	C
893	AGIOS DIMITRIOS IMO 9349605	6,500 TEU	2011	299 m	Wärtsilä - 10RTA96C	7.2	C
892	MERKUR OCEAN IMO 9620619	3,800 TEU	2013	228 m	MAN - 7S70ME-C	7.2	C
891	ARGUS IMO 9262716	6,492 TEU	2004	300 m	Diesel United - 12RTA96C	7.2	C
895	MSC ROMANE IMO 9745653	9,400 TEU	2017	300 m	MAN - 9S90ME-C10	7.2	C
894	MSC ANCHORAGE IMO 9619440	8,762 TEU	2013	299 m	MAN - 9S90ME-C8	7.2	C
897	ONE OLYMPUS IMO 9312987	8,628 TEU	2008	336 m	Wärtsilä - 12RT-flex96C	7.2	C
896	MSC PAMELA IMO 9290531	9,200 TEU	2005	337 m	MAN - 12K98MC-C	7.2	C
900	MSC BRITTANY IMO 9724049	9,162 TEU	2016	300 m	Wärtsilä - 9X82	7.2	C
899	MSC LISBON IX IMO 9304459	9,200 TEU	2007	337 m	MAN - 12K98MC-C	7.2	C
898	HELLA IMO 9535137	5,605 TEU	2011	275 m	MAN - 8K98ME	7.2	C

Page 18 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.