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)

#460 of 2,221 container ships

CO₂ intensity

5.1 g CO₂/dwt·nm

vs segment average (9.9)

-48% 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
449	MAERSK CINCINNATI IMO 9936410	15,500 TEU	2024	366 m	UnKnown 8G95ME-C10	5.1	B
452	COSCO EXCELLENCE IMO 9472189	13,092 TEU	2012	366 m	Hyundai - 12 K98MC	5.1	B
453	MSC TARANTO IMO 9475258	14,000 TEU	2011	366 m	Doosan - 12K98MC-C	5.1	B
455	MAJESTIC MAERSK IMO 9619919	18,270 TEU	2013	399 m	Doosan - 8S80ME-C MK9.2	5.1	B
454	EVER GRADE IMO 9820855	20,000 TEU	2019	400 m	MAN - 11G95ME-C9	5.1	B
459	CMA CGM BOUGAINVILLE IMO 9702156	17,722 TEU	2015	398 m	Doosan - 11S90ME-C9	5.1	B
458	MSC TRIESTE IMO 9484479	13,050 TEU	2011	366 m	Doosan - 12K98MC-C	5.1	B
457	MSC ISTANBUL IMO 9606326	16,652 TEU	2015	399 m	STX - 12K98MC-C	5.1	B
456	MAERSK ESSEN IMO 9456783	13,100 TEU	2010	366 m	Hyundai - WART.12RT-FLEX96C-B	5.1	B
462	YM TIPTOP IMO 9860946	12,690 TEU	2021	332 m	Hyundai - 8G95ME-C9	5.1	B
464	AL JASRAH IMO 9732321	15,000 TEU	2016	368 m	MAN - 9S90ME-C10	5.1	B
461	EVER GIFTED IMO 9786827	20,000 TEU	2018	400 m	MAN - 11G95ME-C9	5.1	B
466	CMA CGM CENTAURUS IMO 9410777	11,400 TEU	2010	363 m	MAN - 12K98ME-C	5.1	B
465	APL LION CITY IMO 9631967	13,892 TEU	2013	398 m	MAN - 11S90ME-C9	5.1	B
460	MSC DILETTA IMO 9897004	23,656 TEU	2021	400 m	Doosan - 9L32/40CD	5.1	B
463	AL DAHNA EXPRESS IMO 9708825	18,691 TEU	2016	400 m	Hyundai - 10S90ME-C10	5.1	B
469	MAERSK SERANGOON IMO 9315214	5,648 TEU	2007	318 m	Wärtsilä - 11RT-flex96C	5.1	B
468	MSC VALERIA IMO 9461439	14,000 TEU	2012	366 m	MAN - 12K98MC-C	5.1	B
467	HMM HANBADA IMO 9869203	14,000 TEU	2021	365 m	MAN - 9G95ME-C10	5.1	B
474	YM WIND IMO 9708461	14,198 TEU	2017	368 m	Hyundai - 11S90ME-C10	5.2	B
473	PANAMA EXPRESS IMO 9641223	6,900 TEU	2013	270 m	Hyundai - 8S80ME-C9.2	5.2	B
475	MSC GABON IMO 9974539	8,300 TEU	2025	260 m	Hyundai Heavy Industries Co. Ltd. 7G80ME-C10-coEGR	5.2	B
472	HMM HOPE IMO 9637234	13,154 TEU	2014	356 m	Doosan - 10S90ME-C9	5.2	B
471	HYUNDAI EARTH IMO 9725110	10,055 TEU	2016	324 m	MAN - 9G80ME-C9	5.2	B
470	COSCO GLORY IMO 9466245	13,092 TEU	2011	366 m	MAN - 12K98ME-C	5.2	B
476	EVER GREET IMO 9832729	20,150 TEU	2019	400 m	MAN - 11G95ME-C9	5.2	B
480	SEASPAN BEYOND IMO 9739678	10,100 TEU	2016	337 m	MAN - 10S90ME-C9	5.2	B
482	AFIF IMO 9732345	15,000 TEU	2017	368 m	Hyundai - 9S90ME-C10	5.2	B
478	CMA CGM JULES VERNE IMO 9454450	16,022 TEU	2013	396 m	Wärtsilä - 14RT-flex96C	5.2	B
483	HYUNDAI NEPTUNE IMO 9725158	10,000 TEU	2016	324 m	Hyundai - 9G80ME-C9	5.2	B
477	MSC VANDYA IMO 9484467	13,050 TEU	2012	366 m	Doosan - 12K98MC-C	5.2	B
481	AL DHAIL IMO 9732307	15,000 TEU	2016	368 m	MAN - 9S90ME-C10	5.2	B
479	OOCL MALAYSIA IMO 9627980	13,200 TEU	2011	366 m	HHI - 12S90ME-C9.2	5.2	B
485	COSCO SHIPPING SAKURA IMO 9785794	13,500 TEU	2018	366 m	MAN - 11S90ME-C10	5.2	B
484	EVER GLORY IMO 9786839	20,000 TEU	2019	400 m	MAN - 11G95ME-C9	5.2	B
487	MSC AURIGA IMO 9857183	15,000 TEU	2020	366 m	Wärtsilä - 8X92	5.2	B
486	CMA CGM OSIRIS IMO 9882504	15,000 TEU	2021	366 m	Hyundai Heavy Industries Co Ltd - South Korea 10X92-LPSCR	5.2	B
488	ONE RECOGNITION IMO 9952701	7,000 TEU	2024	272 m	HSD Engine Co Ltd - South Korea 7G80ME-C10-HPSCR	5.2	B
489	SEASPAN BEAUTY IMO 9713349	10,100 TEU	2015	337 m	MAN - 10S90ME-C9	5.2	B
491	COSCO SHIPPING SCORPIO IMO 9789635	19,000 TEU	2018	400 m	MAN - 11S90ME-C10	5.2	B
490	YM WINNER IMO 9684689	14,080 TEU	2015	368 m	MAN - 11S90ME-C9	5.2	B
494	APL SINGAPURA IMO 9632002	13,892 TEU	2013	398 m	MAN - 11S90ME-C9	5.2	B
493	JADE I IMO 9968059	7,000 TEU	2024	272 m	7G80ME-C10-GI-ERGTC	5.2	B
492	MSC SOFIA IMO 9927275	14,812 TEU	2023	366 m	Hyundai Heavy Industries Co Ltd - South Korea 11G90ME-C10-GI	5.2	B
497	YM WELLSPRING IMO 9757230	13,870 TEU	2019	366 m	STX - 11S90ME-C9	5.2	B
496	MSC INGY IMO 9755945	17,590 TEU	2016	400 m	Doosan - 11G95ME-C9	5.2	B
495	MSC SIXIN IMO 9839301	22,000 TEU	2019	400 m	MAN - 11G95ME	5.2	B
498	EVER GOVERN IMO 9832717	20,150 TEU	2019	400 m	MAN - 11G95ME-C9	5.2	B
500	OOCL VERACRUZ IMO 9979266	5,500 TEU	2024	255 m	MAN-B&W 6G80ME-C10	5.2	B
499	CMA CGM BUTTERFLY IMO 9365790	9,661 TEU	2008	350 m	Hyundai - 12 RTA 96 C-B	5.2	B

Page 10 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.