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)

#344 of 2,098 container ships

CO₂ intensity

5.3 g CO₂/dwt·nm

vs segment average (10.39)

-49% 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
301	COSCO SHIPPING ARIES IMO 9783497	20,000 TEU	2018	400 m	Hyundai - 11S90ME-C10	5.0	A
302	COSCO SHIPPING KILIMANJARO IMO 9757852	13,636 TEU	2017	366 m	CSSC - 10S90ME-C10	5.0	A
305	CMA CGM ANTOINE DE SAINT EXUPERY IMO 9776418	20,600 TEU	2018	400 m	Hyundai - 11X92	5.1	A
304	EVER GENIUS IMO 9786815	20,000 TEU	2018	400 m	MAN - 11G95ME-C9	5.1	A
303	EVER APEX IMO 9893979	23,764 TEU	2022	400 m	CSSC-MES Diesel Co Ltd - China 11X92-B	5.1	A
306	MAREN MAERSK IMO 9632129	18,340 TEU	2014	399 m	Doosan - 8S80ME-C9	5.1	A
307	MSC VANDYA IMO 9484467	13,050 TEU	2012	366 m	Doosan - 12K98MC-C	5.1	A
308	CMA CGM JEAN MERMOZ IMO 9776420	20,600 TEU	2018	400 m	Hyundai - 11X92	5.1	A
311	AL DHAIL IMO 9732307	15,000 TEU	2016	368 m	MAN - 9S90ME-C10	5.1	A
313	MUNKEBO MAERSK IMO 9632117	18,270 TEU	2014	399 m	Doosan - 7S80ME-C	5.1	A
310	MSC ISABELLA IMO 9839272	22,000 TEU	2019	400 m	MAN - 11G95ME-C9	5.1	A
314	MSC WASHINGTON IMO 9908047	14,428 TEU	2022	335 m	CSSC-MES Diesel Co Ltd - China 9X92DF	5.1	A
309	ANE MAERSK IMO 9948748	16,592 TEU	2021	351 m	Hyundai Heavy Industries Co Ltd - South Korea 8G95ME-C10-LGIM	5.1	A
312	AL MURABBA IMO 9708837	15,000 TEU	2015	369 m	MAN - 9S90ME-C10	5.1	A
316	EA CETUS IMO 9967495	7,092 TEU	2024	272 m	CSSC-MES Diesel Co Ltd - China 7G80ME-C10-HPSCR	5.1	A
315	CMA CGM RIMBAUD IMO 9635640	6,881 TEU	2013	270 m	Hyundai - 8Rt-flex82T	5.1	A
317	MSC MELATILDE IMO 9404675	13,200 TEU	2010	366 m	Doosan - 12K98MC-C	5.1	A
319	MARIBO MAERSK IMO 9619969	18,270 TEU	2014	399 m	Doosan - 8S80ME-C MK9.2	5.1	A
318	MSC PALOMA IMO 9441001	13,200 TEU	2010	365 m	Doosan - 12K98MC-C	5.1	A
320	MSC FAITH IMO 9842085	15,000 TEU	2019	366 m	Wärtsilä - 10X92	5.1	A
321	CMA CGM BOUGAINVILLE IMO 9702156	17,722 TEU	2015	398 m	Doosan - 11S90ME-C9	5.1	A
322	CMA CGM ORFEO IMO 9364992	9,661 TEU	2008	350 m	Hyundai - 12 RTA 96 C-B	5.1	A
323	MSC TRIESTE IMO 9484479	13,050 TEU	2011	366 m	Doosan - 12K98MC-C	5.1	A
324	SAN RAPHAEL MAERSK IMO 9622253	9,669 TEU	2014	333 m	HHI - 7S90-C9.2	5.2	A
325	EVER GOODS IMO 9810991	20,000 TEU	2018	400 m	Mitsui - 11G95ME-C9	5.2	A
327	MSC IRENE IMO 9399040	10,000 TEU	2010	366 m	MAN - 12K98MC-C	5.2	A
326	ONE RECOGNITION IMO 9952701	7,000 TEU	2024	272 m	HSD Engine Co Ltd - South Korea 7G80ME-C10-HPSCR	5.2	A
328	MATHILDE MAERSK IMO 9632179	18,340 TEU	2015	399 m	Doosan - 8S80ME-C9	5.2	A
329	HMM DREAM IMO 9637222	13,154 TEU	2014	366 m	Doosan - 10S90ME-C9	5.2	A
330	ZIM RUBY IMO 9968009	7,000 TEU	2024	272 m	Hudong Heavy Machinery Co Ltd - China 7G80ME-C10-GI-ERGTC	5.2	A
331	EVER GOLDEN IMO 9811012	20,000 TEU	2018	400 m	Mitsui - 11G95ME-C9	5.2	A
332	EVER AEON IMO 9943279	24,004 TEU	2024	400 m	11X92-B	5.2	A
333	SALAHUDDIN IMO 9708796	15,000 TEU	2015	369 m	MAN - 9S90ME-C10	5.2	A
334	EVER GIFTED IMO 9786827	20,000 TEU	2018	400 m	MAN - 11G95ME-C9	5.2	A
335	MSC LA SPEZIA IMO 9461403	14,000 TEU	2010	366 m	Doosan - 12K98MC-C	5.2	A
336	MAERSK HERRERA IMO 9784324	15,282 TEU	2018	353 m	Hyundai - 8G95ME-C9	5.2	A
338	COYHAIQUE IMO 9687588	9,326 TEU	2015	300 m	MAN - 8S90ME-C10	5.2	A
337	EVER ARIA IMO 9909132	23,888 TEU	2022	400 m	CSSC-MES Diesel Co Ltd - China 11X92	5.2	A
339	EVER GLOBE IMO 9786841	20,000 TEU	2019	400 m	MAN - 11G95ME-C9	5.2	A
341	MSC NEW YORK IMO 9606314	16,652 TEU	2014	399 m	STX - 12K98MC-C	5.2	A
340	CMA CGM PATAGONIA IMO 9894961	15,000 TEU	2021	366 m	CSSC-MES Diesel Co. Ltd. 10X92DF	5.2	A
342	APL RAFFLES IMO 9631979	13,892 TEU	2013	398 m	MAN - 11S90ME-C9	5.3	A
343	SAN AUGUSTIN MAERSK IMO 9622239	9,669 TEU	2013	333 m	Hyundai - 7S90ME-C9	5.3	A
346	MSC BEATRICE IMO 9399014	10,000 TEU	2009	366 m	MAN - 12K98MC-C	5.3	A
345	APL LION CITY IMO 9631967	13,892 TEU	2013	398 m	MAN - 11S90ME-C9	5.3	A
344	CMA CGM G. WASHINGTON IMO 9780847	14,414 TEU	2017	366 m	Hyundai - 10X92	5.3	A
350	MSC VALERIA IMO 9461439	14,000 TEU	2012	366 m	MAN - 12K98MC-C	5.3	A
349	CMA CGM NEVADA IMO 9471408	12,600 TEU	2011	366 m	MAN - 12K98ME-C	5.3	A
348	MAJESTIC MAERSK IMO 9619919	18,270 TEU	2013	399 m	Doosan - 8S80ME-C MK9.2	5.3	A
347	CMA CGM EVERGLADE IMO 9894985	15,000 TEU	2022	366 m	CSSC-MES Diesel Co. Ltd. 10X92DF	5.3	A

Page 7 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.