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)

#169 of 2,221 container ships

CO₂ intensity

4.2 g CO₂/dwt·nm

vs segment average (9.9)

-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

2,267

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
151	MSC ILENIA IMO 9962548	202,562	2023	366 m	MAN-B&W 8G95ME-C10	4.2	A
152	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
153	MSC ORSOLA IMO 9946726	16,000 TEU	2024	366 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 9X92-B-HPSCR	4.2	A
156	MSC MICHEL CAPPELLINI IMO 9929431	24,100 TEU	2023	400 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11X92	4.2	A
155	CMA CGM MAUI IMO 9938157	15,000 TEU	2024	366 m	Wärtsilä - 10X92DF	4.2	A
154	CMA CGM SCANDOLA IMO 9859129	15,128 TEU	2020	366 m	Hyundai - 11G90ME-C10	4.2	A
157	MSC NICOLA MASTRO IMO 9930064	24,100 TEU	2023	400 m	UnKnown 11X92	4.2	A
160	MSC HORTENSE IMO 9978951	11,400 TEU	2025	335 m	MAN-B&W 6G90ME-C10-GI	4.2	A
158	CMA CGM SYMI IMO 9867839	15,128 TEU	2022	366 m	Hyundai Heavy Industries Co. Ltd. 11G90ME-C10-GI-EGRTC	4.2	A
161	CMA CGM HELIUM IMO 9996721	147,196	2025	335 m	MAN-B&W 7G90ME-C10-LGIM	4.2	A
159	BANGKOK EXPRESS IMO 9943889	23,660 TEU	2024	400 m	UnKnown 11G95ME-C10-GI	4.2	A
163	MAYVIEW MAERSK IMO 9619995	18,270 TEU	2014	399 m	Doosan - 8S80ME-C MK9.2 TIER II	4.2	A
162	MSC IVA IMO 9962550	202,562	2023	366 m	MAN-B&W 8G95ME-C10	4.2	A
165	YM TRANQUILITY IMO 9792682	20,150 TEU	2022	334 m	MAN - 9S90ME-C10	4.2	A
164	ONE FRONTIER IMO 9934383	15,000 TEU	2023	366 m	Hyundai Heavy Industries Co. Ltd. 8G95ME-C10-EGRTC	4.2	A
166	HMM GARNET IMO 9944455	13,248 TEU	2024	335 m	HD Hyundai Heavy Industries Co Ltd - South Korea 7G95ME-C10-LPSCR	4.2	A
167	BERLIN EXPRESS IMO 9540118	23,660 TEU	2023	400 m	UnKnown 11G95ME-C10-GI	4.2	A
168	MSC IVORY COAST IMO 9974474	8,300 TEU	2025	260 m	Hyundai Heavy Industries Co. Ltd. 7G80ME-C10-coEGR	4.2	A
170	YM WISDOM IMO 9757216	13,870 TEU	2019	366 m	MAN - 11S90ME-C9	4.2	A
169	COSCO SHIPPING TAURUS IMO 9783459	17,327 TEU	2018	400 m	CSSC - 11S90ME-C10	4.2	A
172	CMA CGM CHAMPS ELYSEES IMO 9839131	23,500 TEU	2020	400 m	CSSC - 12X92DF	4.3	A
171	ONE MACKINAC IMO 9689603	13,900 TEU	2015	366 m	Mitsui - 11S90ME-C9	4.3	A
173	YM WELLNESS IMO 9704623	14,080 TEU	2015	368 m	MAN - 11S90ME-C9	4.3	A
175	OOCL SPAIN IMO 9908126	24,000 TEU	2023	400 m	HSD Engine Co Ltd - South Korea 12X92	4.3	A
174	MSC METTE IMO 9936630	272,192	2023	399 m	UnKnown 11X92	4.3	A
176	MSC QUITTERIE IMO 9946881	16,000 TEU	2024	366 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 9X92-HPSCR	4.3	A
177	CMA CGM TROCADERO IMO 9839167	23,500 TEU	2021	400 m	CSSC - 12X92DF	4.3	A
179	MARSEILLE MAERSK IMO 9778844	20,568 TEU	2018	399 m	Doosan - 7G80ME-C9	4.3	A
178	CMA CGM LOUVRE IMO 9839143	23,500 TEU	2020	400 m	CSSC - 12X92DF	4.3	A
181	COSCO SHIPPING VIRGO IMO 9783461	17,327 TEU	2018	400 m	CSSC - 11S90ME-C10	4.3	A
180	MSC ROSE IMO 9957359	15,600 TEU	2024	364 m	Hyundai Heavy Industries Co Ltd - South Korea 8G95ME-C10-GI-LPSCR	4.3	A
182	MSC BIANCA SILVIA IMO 9930935	15,500 TEU	2023	366 m	MAN - 9G95ME-C10	4.3	A
183	ONE TRADITION IMO 9769300	20,170 TEU	2017	400 m	Doosan - 11G95ME-C9	4.3	A
184	A. P. MOLLER IMO 9948803	16,592 TEU	2021	351 m	8G95ME-C10-LGIM-EGRTC	4.3	A
189	MAERSK HALIFAX IMO 9784271	15,282 TEU	2017	368 m	Hyundai - 8G95ME-C9	4.3	A
188	MARGRETHE MAERSK IMO 9632131	18,340 TEU	2015	399 m	Doosan - 8S80ME-C9	4.3	A
187	MADRID MAERSK IMO 9778791	20,568 TEU	2017	399 m	Doosan - 7G80ME-C9	4.3	A
186	MSC GIUSY IMO 9947134	16,000 TEU	2023	366 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 9X92-B-HPSCR	4.3	A
185	MARCHEN MAERSK IMO 9632143	18,340 TEU	2011	399 m	Doosan - 8S80ME-C9	4.3	A
193	MARIE MAERSK IMO 9619933	18,270 TEU	2013	399 m	Doosan - 8S80ME-C MK9.2	4.3	A
192	MSC LINZIE IMO 9987354	16,000 TEU	2025	366 m	8G95ME-C10-GI	4.3	A
194	ONE FOREVER IMO 9944807	15,000 TEU	2024	366 m	8G95ME-C10	4.3	A
190	MSC CRAPOLLA IMO 9963621	15,600 TEU	2025	368 m	9G95ME-C10-GI	4.3	A
191	ONE FORTUNE IMO 9944819	15,000 TEU	2024	366 m	8G95ME-C10-EGRTC	4.3	A
200	MSC ADELE IMO 1016692	139,436	2025	335 m	MAN-B&W 6G90ME-C10-GI	4.3	A
199	COSCO SHIPPING UNIVERSE IMO 9795610	21,000 TEU	2018	400 m	CSSC - 12S90ME-C10	4.3	A
198	MSC TINA IMO 9762340	15,909 TEU	2017	398 m	Doosan - 11G95ME-C9	4.3	A
197	MSC CLAUDE GIRARDET IMO 9936628	271,957	2023	400 m	UnKnown 11X92	4.3	A
196	MSC IRINA IMO 9929429	24,100 TEU	2023	400 m	UnKnown 11X92	4.3	A
195	MAERSK HAVANA IMO 9784336	15,282 TEU	2019	353 m	Hyundai - 8G95ME-C9	4.3	A

Page 4 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.