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)

#530 of 2,098 container ships

CO₂ intensity

6.3 g CO₂/dwt·nm

vs segment average (10.39)

-39% 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
501	HYUNDAI PLATINUM IMO 9637155	5,000 TEU	2013	255 m	Hyundai - 6RT-flex82T	6.1	B
502	SEASPAN AMAZON IMO 9630391	10,100 TEU	2014	337 m	MAN - 10S90ME-C9	6.1	B
503	APL SALALAH IMO 9462029	10,800 TEU	2012	347 m	MAN - 12K98ME-C	6.1	B
505	TUCAPEL IMO 9569970	8,000 TEU	2012	300 m	Doosan - 7K98ME-MK7	6.1	B
504	MSC LAUREN IMO 9467407	12,400 TEU	2011	366 m	MAN - 12K98MC-C	6.1	B
506	MAERSK CALABAR IMO 9525302	4,500 TEU	2011	249 m	HHI - 6S80ME-C9	6.2	B
508	CSCL SATURN IMO 9467299	13,300 TEU	2011	366 m	MAN - 12K98ME-C	6.2	B
507	APL BARCELONA IMO 9462043	10,800 TEU	2012	347 m	Doosan - 12K98ME-C	6.2	B
509	APL COLUMBUS IMO 9597525	9,200 TEU	2014	328 m	Doosan - 10S90ME-C MK9.2 TIER 2	6.2	B
510	MSC EUGENIA IMO 9785469	11,500 TEU	2022	328 m	MAN - 8G95ME-C9	6.2	B
512	POTOMAC EXPRESS IMO 9349526	6,435 TEU	2008	306 m	Hyundai - 11RT-flex96C	6.2	B
511	MSC RENEE IMO 9465306	13,100 TEU	2012	366 m	MAN - 12K98ME7	6.2	B
513	CMA CGM PEGASUS IMO 9399210	11,400 TEU	2010	363 m	MAN - 12K98ME-C	6.2	B
514	MSC RACHELE IMO 9290282	7,747 TEU	2005	334 m	Hyundai - 12 K98MC	6.2	B
515	NORTHERN JAVELIN IMO 9465095	8,400 TEU	2009	334 m	MAN - 10K98ME-C	6.2	B
516	CMA CGM FORT JAMES IMO 9966764	7,600 TEU	2024	268 m	MAN-B&W 6G80ME-C10-GI	6.2	B
517	CMA CGM NILE IMO 9732589	9,443 TEU	2015	300 m	Wärtsilä - 9X82	6.2	B
518	MAYA BAY IMO 9983401	2,954 TEU	2023	186 m	MAN-B&W 7S60ME-C10	6.2	B
519	MSC REGULUS IMO 9465291	13,100 TEU	2012	366 m	MAN - 12K98ME7	6.2	B
521	CSCL MERCURY IMO 9467275	13,300 TEU	2011	366 m	MAN - 12K98ME-C	6.2	B
520	MSC VEGA IMO 9465265	13,100 TEU	2012	366 m	MAN - 12K98ME7	6.2	B
522	MSC BRANKA IMO 9720495	9,400 TEU	2016	300 m	MAN - 9S90ME-C10	6.3	B
523	MSC DUBAI VII IMO 9444285	6,310 TEU	2007	295 m	Mitsui - 11K98MC	6.3	B
524	CSCL STAR IMO 9466867	13,300 TEU	2011	366 m	Doosan - 12K98MC-C7	6.3	B
525	BUDAPEST EXPRESS IMO 9450430	8,600 TEU	2010	335 m	MAN - 12K98ME	6.3	B
526	MH PERSEUS IMO 9967433	7,000 TEU	2021	272 m	CSSC-MES Diesel Co Ltd - China 7G80ME-C10-HPSCR	6.3	B
529	MSC SOFIA PAZ IMO 9695028	9,000 TEU	2014	300 m	HHI - W9X82	6.3	B
528	MSC SAVONA IMO 9460356	14,000 TEU	2010	366 m	Doosan - 12K98MC-C	6.3	B
527	COPIAPO IMO 9687526	9,326 TEU	2014	300 m	MAN - 8S90ME-C	6.3	B
531	ONE REASSURANCE IMO 9952696	7,000 TEU	2023	272 m	HSD Engine Co Ltd - South Korea 7G80ME-C10-HPSCR	6.3	B
530	MSC MARIA SAVERIA IMO 9467421	12,400 TEU	2011	366 m	MAN - 12K98MC-C	6.3	B
532	MSC ALIYA IMO 9842097	15,000 TEU	2019	366 m	Wärtsilä - 10X92	6.3	B
533	MSC JUDITH IMO 9299549	8,034 TEU	2006	325 m	Sulzer - 12RTA96C	6.3	B
534	MAERSK GUAYAQUIL IMO 9727871	10,100 TEU	2015	337 m	MAN - 10S90ME-C9	6.3	B
536	CMA CGM GEMINI IMO 9410791	11,400 TEU	2011	363 m	MAN - 12K98ME-C	6.3	B
535	MAERSK CONGO IMO 9525340	4,500 TEU	2008	249 m	HHI - 6S80ME-C9	6.3	B
539	CMA CGM MUSSET IMO 9406611	6,570 TEU	2010	300 m	MAN - 10K98MC-C	6.3	B
538	VALENCE IMO 9628180	8,800 TEU	2013	300 m	HHI - 9S90ME-C8.2	6.3	B
537	MSC TORONTO IMO 9299525	8,034 TEU	2006	325 m	Sulzer - 12RTA96C	6.3	B
542	CMA CGM KHAO SOK IMO 9925837	5,940 TEU	2023	240 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 6G80ME-C10	6.3	B
543	MSC DAMLA IMO 9250983	4,924 TEU	2002	294 m	Sulzer - 11RTA96C	6.3	B
541	MSC EMANUELA IMO 9399052	10,000 TEU	2010	366 m	MAN - 12K98MC-C	6.3	B
544	TEMPANOS IMO 9447897	8,000 TEU	2011	300 m	MAN - 7K98ME7	6.3	B
540	ZIM MOONSTONE IMO 9968073	7,000 TEU	2024	272 m	7G80ME-C10-GI-ERGTC	6.3	B
545	ONE ORPHEUS IMO 9313008	9,040 TEU	2008	336 m	Diesel United - 12RTflex96C-B	6.3	B
547	MSC ASYA IMO 9339296	9,200 TEU	2008	337 m	MAN - 12K98MC-C	6.4	B
546	CMA CGM BENJAMIN FRANKLIN IMO 9706891	17,859 TEU	2015	399 m	CSSC - 11S90ME-C9	6.4	B
550	SPEED IMO 9475698	13,100 TEU	2012	366 m	MAN - 12K98ME-C	6.4	B
549	MSC PARIS IMO 9301483	8,204 TEU	2006	334 m	MAN - 12K98MC	6.4	B
548	MSC NITYA B IMO 9778117	11,000 TEU	2017	330 m	Hyundai - 8G95ME-C9	6.4	B

Page 11 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.