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)

#72 of 2,098 container ships

CO₂ intensity

4.1 g CO₂/dwt·nm

vs segment average (10.39)

-60% 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/dwt·nm)

8.58

segment median

#	Vessel	Size (TEU)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
52	HMM HELSINKI IMO 9863340	23,000 TEU	2020	400 m	HSD Engine Co. Ltd. 11G95ME.C10	4.0	A
51	ANTONIA MAERSK IMO 9948762	16,592 TEU	2024	351 m	Hyundai Heavy Industries Co Ltd - South Korea 8G95ME-C10-LGIM	4.0	A
53	OOCL PIRAEUS IMO 9908097	23,000 TEU	2023	400 m	HSD Engine Co Ltd - South Korea 12X92DF	4.0	A
54	HMM ST PETERSBURG IMO 9868364	23,000 TEU	2020	400 m	MAN - 11G95ME-C9	4.0	A
55	MSC METTE IMO 9936630	272,192	2023	399 m	UnKnown 11X92	4.0	A
56	MSC ILENIA IMO 9962548	202,562	2023	366 m	MAN-B&W 8G95ME-C10	4.0	A
58	MSC CARMELITA IMO 9946879	16,000 TEU	2024	366 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 9X92-HPSCR	4.0	A
57	MSC IDANIA IMO 9962562	202,562	2024	366 m	MAN-B&W 8G95ME-C10	4.0	A
59	MSC MICHEL CAPPELLINI IMO 9929431	24,100 TEU	2023	400 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11X92	4.0	A
61	MSC IRINA IMO 9929429	24,100 TEU	2023	400 m	UnKnown 11X92	4.0	A
60	OOCL SPAIN IMO 9908126	24,000 TEU	2023	400 m	HSD Engine Co Ltd - South Korea 12X92	4.0	A
62	MSC MARIELLA IMO 9934747	24,000 TEU	2023	400 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11X92	4.1	A
63	MSC ROSE IMO 9957359	15,600 TEU	2024	364 m	Hyundai Heavy Industries Co Ltd - South Korea 8G95ME-C10-GI-LPSCR	4.1	A
64	ONE INSPIRATION IMO 9939149	23,000 TEU	2023	400 m	MAN-B&W 9G95ME-C10	4.1	A
66	MSC TURKIYE IMO 9931288	24,000 TEU	2023	400 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11X92	4.1	A
65	MSC LORETO IMO 9934735	24,000 TEU	2023	400 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11X92	4.1	A
67	MSC TESSA IMO 9930038	24,100 TEU	2023	400 m	UnKnown 11X92	4.1	A
68	TIHAMA IMO 9736107	18,800 TEU	2016	400 m	Hyundai - 10S90ME-C10	4.1	A
70	HMM OSLO IMO 9868326	23,000 TEU	2020	400 m	MAN - 11G95ME-C9	4.1	A
69	MSC NICOLA MASTRO IMO 9930064	24,100 TEU	2023	400 m	UnKnown 11X92	4.1	A
71	ONE MADRID IMO 9805453	14,000 TEU	2018	366 m	Mitsui - 11S90ME-C9	4.1	A
72	MSC SIMONA IMO 9962615	202,562	2024	366 m	MAN-B&W 8G95ME-C10	4.1	A
74	MSC CLAUDE GIRARDET IMO 9936628	271,957	2023	400 m	UnKnown 11X92	4.1	A
73	ONE INNOVATION IMO 9939137	23,000 TEU	2023	400 m	MAN-B&W 9G95ME-C10	4.1	A
77	ONE TRADITION IMO 9769300	20,170 TEU	2017	400 m	Doosan - 11G95ME-C9	4.2	A
76	MSC GIUSY IMO 9947134	16,000 TEU	2023	366 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 9X92-B-HPSCR	4.2	A
75	CMA CGM CHAMPS ELYSEES IMO 9839131	23,500 TEU	2020	400 m	CSSC - 12X92DF	4.2	A
78	MSC ORSOLA IMO 9946726	16,000 TEU	2024	366 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 9X92-B-HPSCR	4.2	A
79	MSC GEMMA IMO 9936616	272,133	2023	400 m	UnKnown 11X92	4.2	A
80	ONE INFINITY IMO 9933004	24,000 TEU	2023	400 m	MAN-B&W 9G95ME-C10	4.2	A
81	HMM NURI IMO 9869162	14,000 TEU	2021	366 m	MAN - 9G95ME-C10	4.2	A
82	BARZAN IMO 9708851	18,691 TEU	2015	400 m	Hyundai - 10S90ME-C10	4.2	A
83	MAGLEBY MAERSK IMO 9619957	18,270 TEU	2011	399 m	Doosan - 8S80ME-C MK9.2	4.2	A
84	CMA CGM BALI IMO 9867827	15,128 TEU	2021	366 m	Hyundai - 11G90ME-C10	4.2	A
85	MSC MARTINA MARIA IMO 9540077	15,128 TEU	2023	366 m	Hyundai Heavy Industries Co Ltd - South Korea 8H35DF	4.2	A
86	MSC AZRA IMO 9932919	15,600 TEU	2023	364 m	Hyundai Heavy Industries Co Ltd - South Korea 8X92-B	4.2	A
88	MSC MICOL IMO 9931290	24,000 TEU	2023	400 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11X92	4.2	A
87	ONE TRIUMPH IMO 9769271	20,170 TEU	2017	400 m	Doosan - 11G95ME-C9.2 (Tier II)	4.2	A
90	MSC OSCAR IMO 9703291	18,400 TEU	2014	395 m	Hyundai - 8S80ME-C9	4.2	A
89	MSC LENI IMO 9839454	22,000 TEU	2019	400 m	MAN - 11G95ME	4.2	A
91	CMA CGM JACQUES SAADE IMO 9839179	22,448 TEU	2020	400 m	CSSC - 12X92DF	4.2	A
93	MSC MONICA CRISTINA IMO 9932050	15,264 TEU	2023	366 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11G90ME-C10-GI	4.2	A
92	MSC AAYA IMO 9927263	14,812 TEU	2022	366 m	Hyundai Heavy Industries Co Ltd - South Korea 11G90ME-C10-GI	4.2	A
94	MSC CHINA IMO 9936642	272,131	2023	400 m	UnKnown 11X92	4.2	A
95	HMM PROMISE IMO 9742168	11,000 TEU	2018	330 m	Hyundai - 8G95ME-C9	4.3	A
96	HMM GARAM IMO 9869186	14,000 TEU	2021	366 m	MAN - 9G95ME-C10	4.3	A
97	AL ZUBARA IMO 9708875	18,691 TEU	2015	400 m	Hyundai - 10S90ME-C10	4.3	A
100	MSC MAYA IMO 9708679	18,400 TEU	2015	395 m	Hyundai - 8S80ME-C9	4.3	A
99	MAERSK HIDALGO IMO 9784283	15,282 TEU	2015	353 m	Hyundai - 8G95ME-C9	4.3	A
98	MSC LORENZA IMO 9962598	202,562	2024	366 m	MAN-B&W 8G95ME-C10	4.3	A

Page 2 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.