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)

#149 of 2,098 container ships

CO₂ intensity

4.5 g CO₂/dwt·nm

vs segment average (10.39)

-57% 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
101	MSC JADE IMO 9762326	17,664 TEU	2016	398 m	Doosan - 11G95ME-C9	4.3	A
102	ONE FRUITION IMO 9934371	15,000 TEU	2023	366 m	Hyundai Heavy Industries Co. Ltd. 8G95ME-C10-EGRTC	4.3	A
104	OOCL GERMANY IMO 9776183	21,100 TEU	2017	400 m	Doosan - 11G95ME-C9	4.3	A
103	ONE MEISHAN IMO 9805465	14,000 TEU	2018	366 m	Mitsui - 11S90ME-C9	4.3	A
105	ONE FORTUNE IMO 9944819	15,000 TEU	2024	366 m	8G95ME-C10-EGRTC	4.3	A
106	MONACO MAERSK IMO 9778832	20,568 TEU	2017	399 m	Doosan - 7G80ME-C9	4.3	A
109	MARCHEN MAERSK IMO 9632143	18,340 TEU	2011	399 m	Doosan - 8S80ME-C9	4.3	A
108	MSC VIVIANA IMO 9777216	17,273 TEU	2017	400 m	Doosan - 11G95ME-C9	4.3	A
107	MOSCOW MAERSK IMO 9778818	20,568 TEU	2015	399 m	Doosan - 7G80ME-C9	4.3	A
110	MAERSK CAMPTON IMO 9924211	15,500 TEU	2022	366 m	MAN - 9G95ME-C10	4.4	A
111	OOCL UNITED KINGDOM IMO 9776200	21,100 TEU	2015	400 m	Doosan - 11G95ME-C9	4.4	A
112	MURCIA MAERSK IMO 9780457	20,568 TEU	2015	399 m	Doosan - 7G80ME-C9	4.4	A
114	CMA CGM MONTMARTRE IMO 9839155	23,500 TEU	2021	400 m	CSSC - 12X92DF	4.4	A
113	MSC IVANA IMO 9398371	11,700 TEU	2008	364 m	MAN - 12K98ME	4.4	A
116	ZHONG GU XIONG AN IMO 9812901	2,500 TEU	2018	180 m	Hudong Heavy Machinery - 6RT-flex48T	4.4	A
115	CMA CGM TENERE IMO 9859117	15,128 TEU	2020	366 m	Hyundai - 11G90ME-C10-GI	4.4	A
118	MSC FREYA IMO 9932062	15,264 TEU	2023	366 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11G90ME-C10-GI	4.4	A
117	CMA CGM PALAIS ROYAL IMO 9839181	22,448 TEU	2020	400 m	CSSC - 12X92DF	4.4	A
119	MSC OLIVER IMO 9703306	18,400 TEU	2015	395 m	Hyundai - 8S80ME-C9	4.4	A
121	MSC ELENOIRE IMO 9962603	202,562	2024	366 m	MAN-B&W 8G95ME-C10	4.4	A
120	CMA CGM LOUVRE IMO 9839143	23,500 TEU	2020	400 m	CSSC - 12X92DF	4.4	A
122	MSC JEWEL IMO 9842073	15,000 TEU	2019	366 m	Wärtsilä - 10X92	4.4	A
125	MAERSK HAVANA IMO 9784336	15,282 TEU	2019	353 m	Hyundai - 8G95ME-C9	4.4	A
124	ALS CERES IMO 9938303	7,165 TEU	2021	255 m	Dalian Marine Diesel Co Ltd - China 6G80ME-C10	4.4	A
123	MSC ANNA IMO 9777204	17,273 TEU	2016	400 m	Doosan - 11G95ME-C9	4.4	A
127	MSC CLARA IMO 9708693	18,400 TEU	2015	396 m	Hyundai - 11S90ME-C10	4.4	A
126	HMM HANBADA IMO 9869203	14,000 TEU	2021	365 m	MAN - 9G95ME-C10	4.4	A
128	ONE TRIBUTE IMO 9769295	20,170 TEU	2017	400 m	Doosan - 11G95ME-C9.2 (Tier II)	4.4	A
130	OOCL JAPAN IMO 9776195	21,100 TEU	2017	400 m	Doosan - 11G95ME-C9	4.4	A
129	HYUNDAI PLUTO IMO 9725160	10,000 TEU	2016	324 m	Hyundai - 9G80ME-C9	4.4	A
131	MAERSK HONG KONG IMO 9784257	15,282 TEU	2017	353 m	Hyundai - 8G95ME-C9	4.5	A
132	OOCL SCANDINAVIA IMO 9776212	21,100 TEU	2017	400 m	Doosan - 11G95ME-C9	4.5	A
134	ONE MILANO IMO 9757187	13,870 TEU	2018	366 m	Mitsubishi - 11S90ME-C9	4.5	A
133	MSC AUDREY IMO 9540065	15,128 TEU	2023	366 m	Hyundai Heavy Industries Co Ltd - South Korea 8H35DF	4.5	A
135	MSC MAURA IMO 9962536	202,562	2024	366 m	MAN-B&W 8G95ME-C10	4.5	A
137	MSC VICTORINE IMO 9946867	16,000 TEU	2023	366 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 9X92-HPSCR	4.5	A
136	MSC MARIE IMO 9962574	202,562	2024	366 m	MAN-B&W 8G95ME-C10	4.5	A
139	YM WREATH IMO 9708473	14,198 TEU	2017	368 m	Hyundai - 11S90ME-C10	4.5	A
138	MSC AMBRA IMO 9839480	22,000 TEU	2020	400 m	MAN - 11G95ME	4.5	A
140	COSCO SHIPPING UNIVERSE IMO 9795610	21,000 TEU	2018	400 m	CSSC - 12S90ME-C10	4.5	A
142	METTE MAERSK IMO 9632155	18,340 TEU	2015	399 m	Doosan - 8S80ME-C9	4.5	A
141	MAERSK HANOI IMO 9784295	15,282 TEU	2018	353 m	Hyundai - 8G95ME-C9	4.5	A
143	ONE FRONTIER IMO 9934383	15,000 TEU	2023	366 m	Hyundai Heavy Industries Co. Ltd. 8G95ME-C10-EGRTC	4.5	A
146	OOCL HONG KONG IMO 9776171	21,413 TEU	2017	400 m	Doosan - 11G95ME-C9	4.5	A
145	MSC GULSUN IMO 9839430	22,000 TEU	2019	400 m	Hyundai - 11G95ME-C9	4.5	A
144	CMA CGM IGUACU IMO 9859131	15,128 TEU	2021	366 m	Hyundai Heavy Industries Co. Ltd. 11G90ME-C10-GI-EGRTC	4.5	A
148	MSC ALLEGRA IMO 9897028	23,656 TEU	2021	400 m	Doosan - 11G95ME-C9	4.5	A
147	MSC TINA IMO 9762340	15,909 TEU	2017	398 m	Doosan - 11G95ME-C9	4.5	A
150	OOCL ABU DHABI IMO 9922524	24,188 TEU	2024	400 m	CSSC-MES Diesel Co Ltd - China 12X92DF	4.5	A
149	MSC RIFAYA IMO 9767388	16,909 TEU	2017	400 m	MAN - 11G95ME-C9	4.5	A

Page 3 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.