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)

#185 of 2,098 container ships

CO₂ intensity

4.6 g CO₂/dwt·nm

vs segment average (10.39)

-55% 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
151	ONE MONACO IMO 9757204	13,870 TEU	2018	366 m	Mitsubishi - 11S90ME-C10.5	4.5	A
153	OOCL ABU DHABI IMO 9922524	24,188 TEU	2024	400 m	CSSC-MES Diesel Co Ltd - China 12X92DF	4.5	A
152	CMA CGM TROCADERO IMO 9839167	23,500 TEU	2021	400 m	CSSC - 12X92DF	4.5	A
155	MSC FRANCESCA IMO 9401116	11,336 TEU	2008	364 m	MAN - 12K98ME	4.5	A
154	ONE FOCUS IMO 9944792	15,000 TEU	2024	366 m	8G95ME-C10	4.5	A
156	ONE MACKINAC IMO 9689603	13,900 TEU	2015	366 m	Mitsui - 11S90ME-C9	4.5	A
157	MSC QUITTERIE IMO 9946881	16,000 TEU	2024	366 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 9X92-HPSCR	4.5	A
159	ONE TREASURE IMO 9773222	20,150 TEU	2018	400 m	Mitsui - 11G95ME-C9	4.5	A
158	MSC BERANGERE IMO 9930947	15,500 TEU	2023	366 m	MAN - 9G95ME-C10	4.5	A
161	HYUNDAI MARS IMO 9725122	10,055 TEU	2016	324 m	MAN - 9G80ME-C9	4.5	A
160	CMA CGM SCANDOLA IMO 9859129	15,128 TEU	2020	366 m	Hyundai - 11G90ME-C10	4.5	A
162	CMA CGM CONCORDE IMO 9839208	22,448 TEU	2021	400 m	CSSC - 12X92DF	4.5	A
164	MSC SIXIN IMO 9839301	22,000 TEU	2019	400 m	MAN - 11G95ME	4.6	A
163	MADISON MAERSK IMO 9619945	18,270 TEU	2014	399 m	Doosan - 8S80ME-C MK9.2	4.6	A
165	COSCO SHIPPING PISCES IMO 9789647	19,000 TEU	2019	400 m	MAN - 11S90ME-C10	4.6	A
166	COSCO SHIPPING AQUARIUS IMO 9789623	19,000 TEU	2019	400 m	MAN - 11S90ME-C10	4.6	A
168	MAERSK CHARLESTON IMO 9936379	15,500 TEU	2023	366 m	UnKnown 8G95ME-C10	4.6	A
169	MSC APOLLINE IMO 9896983	23,656 TEU	2021	400 m	Doosan - 9L32/40CD	4.6	A
167	MSC FEBE IMO 9839478	22,000 TEU	2019	400 m	MAN - 11G95ME	4.6	A
170	MSC DITTE IMO 9754953	19,224 TEU	2016	398 m	Doosan - 11G95ME-C9.2	4.6	A
173	ONE FOREVER IMO 9944807	15,000 TEU	2024	366 m	8G95ME-C10	4.6	A
172	ZENITH LUMOS IMO 9864215	15,000 TEU	2020	366 m	Wärtsilä - 10X92	4.6	A
171	ONE EAGLE IMO 9741396	14,026 TEU	2016	364 m	Diesel United - 9X82	4.6	A
174	MORTEN MAERSK IMO 9632105	18,270 TEU	2014	399 m	Doosan - 7S80ME-C	4.6	A
175	AL MASHRAB IMO 9732319	15,000 TEU	2016	368 m	MAN - 9S90ME-C10	4.6	A
176	MARGRETHE MAERSK IMO 9632131	18,340 TEU	2015	399 m	Doosan - 8S80ME-C9	4.6	A
177	AL JMELIYAH IMO 9732357	15,000 TEU	2017	368 m	Hyundai - 9S90ME-C10	4.6	A
179	MARIE MAERSK IMO 9619933	18,270 TEU	2013	399 m	Doosan - 8S80ME-C MK9.2	4.6	A
178	MANCHESTER MAERSK IMO 9780445	20,568 TEU	2018	399 m	Doosan - 7G80ME-C9	4.6	A
181	MSC ADYA IMO 9932921	15,600 TEU	2024	364 m	HD Hyundai Heavy Industries Co Ltd - South Korea 8X92-B	4.6	A
180	MSC DARLENE IMO 9930959	15,500 TEU	2023	366 m	MAN - 9G95ME-C10	4.6	A
182	ZEPHYR LUMOS IMO 9864227	15,000 TEU	2021	366 m	Wärtsilä - 10X92	4.6	A
183	SAN MARCO MAERSK IMO 9622215	9,669 TEU	2013	333 m	HHI - 7S90-C9.2	4.6	A
184	COSCO SHIPPING SAGITTARIUS IMO 9783473	17,327 TEU	2018	400 m	MAN - 11S90ME-C10	4.6	A
189	MAASTRICHT MAERSK IMO 9780483	20,568 TEU	2015	399 m	Doosan - 7G80ME-C9	4.6	A
188	COSCO SHIPPING VIRGO IMO 9783461	17,327 TEU	2018	400 m	CSSC - 11S90ME-C10	4.6	A
187	OOCL INDONESIA IMO 9776224	21,100 TEU	2018	400 m	Doosan - 11G95ME-C9	4.6	A
186	COSCO SHIPPING GEMINI IMO 9783526	17,273 TEU	2018	400 m	CSSC - 11S90ME-C10	4.6	A
185	HMM DIAMOND IMO 9944481	13,248 TEU	2024	335 m	HD Hyundai Heavy Industries Co Ltd - South Korea 7G95ME-C10-LPSCR	4.6	A
190	MUMBAI MAERSK IMO 9780471	20,568 TEU	2018	399 m	Doosan - 7G80ME-C9	4.7	A
192	MARSEILLE MAERSK IMO 9778844	20,568 TEU	2018	399 m	Doosan - 7G80ME-C9	4.7	A
191	LINAH IMO 9708801	15,000 TEU	2015	369 m	MAN - 9S90ME-C10	4.7	A
195	AL MURAYKH IMO 9708863	18,800 TEU	2015	400 m	Hyundai - 10S90ME-C10	4.7	A
194	MSC ELOANE IMO 9755957	19,462 TEU	2016	400 m	MAN - 11G95ME-C9	4.7	A
193	AL NEFUD IMO 9708813	18,691 TEU	2015	400 m	Hyundai - 10S90ME-C10	4.7	A
200	MSC MINA IMO 9839260	22,000 TEU	2019	400 m	MAN - 11G95ME	4.7	A
199	COSCO SHIPPING STAR IMO 9795658	21,000 TEU	2019	400 m	CSSC - 12S90ME-C10	4.7	A
198	BRUSSELS EXPRESS IMO 9708784	15,000 TEU	2014	369 m	Hyundai - 9S90ME-C10.2	4.7	A
197	MILAN MAERSK IMO 9778820	20,568 TEU	2017	399 m	Doosan - 7G80ME-C9	4.7	A
196	MAERSK HORSBURGH IMO 9784269	15,282 TEU	2017	353 m	Hyundai - 8G95ME-C9	4.7	A

Page 4 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.