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)

#721 of 2,221 container ships

CO₂ intensity

6.4 g CO₂/dwt·nm

vs segment average (9.9)

-35% 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
701	CMA CGM GEMINI IMO 9410791	11,400 TEU	2011	363 m	MAN - 12K98ME-C	6.3	B
704	ONE CONTINUITY IMO 9388352	8,102 TEU	2008	320 m	Mitsui - 11K98MC	6.4	B
703	VALENCE IMO 9628180	8,800 TEU	2013	300 m	HHI - 9S90ME-C8.2	6.4	B
702	RHINE MAERSK IMO 9456991	4,500 TEU	2012	249 m	MAN - 6S80ME-C9	6.4	B
705	OOCL CHONGQING IMO 9622629	13,200 TEU	2013	366 m	Hyundai - 12S90ME-C9	6.4	B
706	COSCO HOPE IMO 9472165	13,092 TEU	2012	366 m	Hyundai - 12 K98MC	6.4	B
709	MSC AURORA IMO 9484481	13,050 TEU	2012	366 m	Doosan - 12K98MC-C	6.4	B
708	MAERSK CUNENE IMO 9561485	4,496 TEU	2011	249 m	HHI - 6S80ME-C9	6.4	B
707	MAERSK COLUMBUS IMO 9332987	6,188 TEU	2007	299 m	Doosan - 10RT-flex96C	6.4	B
712	MAERSK SELETAR IMO 9315197	5,648 TEU	2007	318 m	Wärtsilä - 11RT-flex96C	6.4	B
711	NYK ORION IMO 9312999	9,040 TEU	2008	336 m	Diesel United - 12RTflex96C-B	6.4	B
710	LAEM CHABANG EXPRESS IMO 9768007	10,100 TEU	2018	336 m	CSSC - 10S90ME-C9	6.4	B
713	VALPARAISO EXPRESS IMO 9777589	10,818 TEU	2016	333 m	MAN - 7S90ME-C9	6.4	B
715	MSC TOMOKO IMO 9309461	8,400 TEU	2006	332 m	MAN - 12K98MC-C	6.4	B
714	ONE HAMBURG IMO 9395159	8,212 TEU	2009	336 m	MAN - 12K98ME	6.4	B
717	MSC RAYSHMI IMO 9785457	12,200 TEU	2021	328 m	Doosan - 8G95ME-C9	6.4	B
716	GSL ELENI IMO 9285677	7,455 TEU	2004	300 m	Hyundai - 12 RTA 96 C-B	6.4	B
720	ONE MISSION IMO 9475650	6,724 TEU	2011	302 m	Wärtsilä - 10RT-flex96C	6.4	B
719	YANTIAN EXPRESS IMO 9229831	7,179 TEU	2002	321 m	MAN - 12K98MC	6.4	B
718	MAERSK SEOUL IMO 9306550	8,400 TEU	2003	332 m	MAN - 12K98ME-C	6.4	B
721	MSC GAYANE IMO 9770763	9,962 TEU	2018	314 m	Doosan - 9S90ME-C10	6.4	B
724	EVER FRANK IMO 9850587	11,850 TEU	2021	334 m	HSD Engine Co Ltd - South Korea 9X62	6.4	B
723	CORCOVADO IMO 9687564	9,326 TEU	2015	300 m	MAN - 8S90ME-C10	6.4	B
722	MSC LAURENCE IMO 9467419	12,400 TEU	2011	366 m	MAN - 12K98MC-C	6.4	B
725	SFL MAUI IMO 9635688	6,900 TEU	2011	270 m	Hyundai - 8Rt-flex82T	6.4	B
726	MSC GIULIA IMO 9770737	9,400 TEU	2017	300 m	Doosan - 9S90ME-C10	6.4	B
727	RDO GLORY IMO 9632507	4,622 TEU	2013	250 m	Wärtsilä - 6RT-flex82T	6.4	B
728	MSC SINDY IMO 9336048	9,200 TEU	2007	337 m	MAN - 12K98MC-C	6.4	B
731	JAMAICA EXPRESS IMO 9686912	6,800 TEU	2015	271 m	MAN - 8G80ME-C9	6.5	B
730	COSCO FRANCE IMO 9516416	13,386 TEU	2013	366 m	MAN - 12K98ME7	6.5	B
729	NYK OCEANUS IMO 9312975	8,628 TEU	2007	336 m	Diesel United - 12RTflex96C-B	6.5	B
732	MAERSK CHILKA IMO 9525364	4,500 TEU	2012	249 m	HHI - 6S80ME-C9	6.5	B
735	ANTWERP IMO 9398448	9,262 TEU	2009	349 m	MAN - 12K98MC	6.5	B
734	ONE ORPHEUS IMO 9313008	9,040 TEU	2008	336 m	Diesel United - 12RTflex96C-B	6.5	B
736	MEGALOPOLIS IMO 9477799	4,800 TEU	2013	255 m	STX - 8K90MC-C	6.5	B
733	MSC GISELLE IMO 9720196	9,400 TEU	2015	300 m	MAN - 9S90ME-C10	6.5	B
737	APL NEW YORK IMO 9597484	9,200 TEU	2013	328 m	Doosan - 10S90ME-C MK9.2 TIER 2 (58,100 KW AT 84 RPM / 51,070 KW AT 84 RPM)	6.5	B
740	MSC PARIS IMO 9301483	8,204 TEU	2006	334 m	MAN - 12K98MC	6.5	B
739	MAERSK LETICIA IMO 9526916	7,450 TEU	2011	300 m	MAN - 9S90MC-C	6.5	B
738	ZIM RUBY IMO 9968009	7,000 TEU	2024	272 m	Hudong Heavy Machinery Co Ltd - China 7G80ME-C10-GI-ERGTC	6.5	B
741	ONE MANEUVER IMO 9475648	6,724 TEU	2011	302 m	Wärtsilä - 10RT-flex96C	6.5	B
744	COLORADO EXPRESS IMO 9349502	6,435 TEU	2008	306 m	Wärtsilä - 11RT-flex96C	6.5	B
743	GSL TINOS IMO 9437050	5,303 TEU	2010	294 m	Wärtsilä - 7RT-FLEX96C	6.5	B
742	MSC BEIJING IMO 9289099	8,034 TEU	2005	325 m	Sulzer - 12RTA96C	6.5	B
747	MSC TAKORADI VIII IMO 9983683	8,182 TEU	2024	272 m	MAN-B&W 6G80ME-C10	6.5	B
746	MSC RAVENNA IMO 9484431	14,000 TEU	2011	366 m	Doosan - 12K98MC-C	6.5	B
745	MAERSK LANCO IMO 9527049	8,700 TEU	2013	300 m	Doosan - MAN 9S90ME-C MK8	6.5	B
750	CSCL NEPTUNE IMO 9467316	13,300 TEU	2012	366 m	MAN - 12K98ME-C	6.5	B
749	MSC CASSANDRE IMO 9785471	11,500 TEU	2022	328 m	MAN - 8G95ME-C9	6.5	B
748	MSC MAGNUM VII IMO 9252541	6,750 TEU	2003	300 m	Doosan - 10K98MC-C	6.5	B

Page 15 of 45 — 2,221 vessels

← Prev Next →

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.