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)

#1,700 of 2,221 container ships

CO₂ intensity

12.8 g CO₂/dwt·nm

vs segment average (9.9)

+29% higher

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
1651	MAERSK WAKAYAMA IMO 9550357	1,577 TEU	2010	172 m	Mitsui - 7S60MC-C	12.1	D
1652	SAGAMORE IMO 9322009	1,730 TEU	2008	184 m	Wärtsilä - 6RTA62U	12.1	D
1653	MSC CLAUDIA IMO 9113446	1,205 TEU	1996	159 m	H. CEGIELSKI-POZNAN S.A. 8 S 50 MC	12.1	D
1654	MSC SINES R IMO 9210098	3,430 TEU	2001	243 m	Sulzer - 7RTA84C	12.2	D
1655	RIYADH MUKAAB IMO 9399806	2,750 TEU	2010	224 m	DALIAN MARINE - 7 L70MC-C	12.2	D
1656	VIOLETTA IMO 9344710	1,875 TEU	2007	179 m	MAN - 6L70ME-C	12.2	D
1657	ECO PONENTE IMO 9985966	13,661	2024	148 m	MAN-B&W 5S50ME-C9-LGIM	12.2	D
1658	MSC WIND II IMO 9173135	2,169 TEU	1999	184 m	Hyundai - 6S60MC	12.2	D
1659	NCL VESTLAND IMO 9981790	1,300 TEU	2025	150 m	MAN-B&W 6S50ME-C9-LGIM	12.3	D
1660	CMA CGM AGATHA IMO 9763722	2,338 TEU	2016	178 m	STX - 6S60ME-C8	12.3	D
1661	LUCIE SCHULTE IMO 9301926	2,602 TEU	2006	210 m	STX - 8 S 70 MC-C	12.3	D
1662	BAHRI JEDDAH IMO 9626522	1,009 TEU	2014	225 m	Hyundai - 7RT-FLEX58T-D	12.3	D
1663	AS CLAUDIA IMO 9330549	2,824 TEU	2007	222 m	MAN - 7K80MC-C	12.3	D
1664	PANDA 005 IMO 9981063	1,400 TEU	2022	170 m	MAN-B&W 7S50ME-C9	12.3	D
1665	VALDIVIA IMO 9333395	1,678 TEU	2006	179 m	MAN - 6L70ME-C	12.3	D
1666	ANTIBES EXPRESS IMO 9243186	3,237 TEU	2002	243 m	HSD ENGINE CO. LTD 8K80MC-C	12.3	D
1667	AS CARELIA IMO 9309409	2,824 TEU	2006	222 m	Hyundai - 7K80MC-C	12.3	D
1668	CTM ISTMO IMO 9430870	1,740 TEU	2010	176 m	Hudong Heavy Machinery - 7S60MC-C MARK 8	12.3	D
1669	DELPHIS RIGA IMO 9780665	2,155 TEU	2017	178 m	STX - 6S60ME-C8	12.3	D
1670	MSC TAMPA IMO 9317925	5,041 TEU	2006	294 m	MAN - 8K98ME	12.4	D
1671	ADMIRAL GALAXY IMO 9365843	1,849 TEU	2008	183 m	MAN - 8S50MC-C	12.4	D
1672	CMA CGM AMBARLI IMO 9436422	3,534 TEU	2008	231 m	Hyundai - 7 K 90 MC-C	12.4	D
1673	LUEBECK IMO 9216092	1,040 TEU	2001	154 m	Hudong Heavy Machinery - 7 L 60 MC	12.4	D
1674	CMA CGM GREEN IMO 9810915	2,268 TEU	2019	185 m	MAN - 6G60ME-C9	12.5	D
1675	CLAIRE A IMO 9379387	1,604 TEU	2005	184 m	MAN - 8S50MC-C	12.5	D
1676	MSC BREMERHAVEN V IMO 9313967	4,196 TEU	2007	294 m	Wärtsilä - 12RT-flex96C	12.6	D
1677	JOHANNES MAERSK IMO 9215189	2,840 TEU	2001	216 m	MAN - 7K90MC-C	12.6	D
1678	MSC MELTEMI III IMO 9440306	2,758 TEU	2010	213 m	Wärtsilä - 8RT-flex68	12.6	D
1679	ECO ZEPHYR IMO 9985978	13,665	2024	148 m	MAN-B&W 5S50ME-C9-LGIM	12.6	D
1680	MSC PANAYA IMO 9217565	1,728 TEU	2000	184 m	Sulzer - 6 RTA 62 U	12.6	D
1681	NORDLUCHS IMO 9673666	1,730 TEU	2014	170 m	MAN - 6S60ME-C8	12.6	D
1682	GFS RHEA IMO 9373486	1,732 TEU	2007	177 m	Hudong Heavy Machinery - 7 S60MC-C MK8	12.7	D
1683	GALANI IMO 9337597	1,732 TEU	2006	177 m	Hudong Heavy Machinery - 7 S60MC-C MK8	12.7	D
1684	UBENA IMO 9690078	2,268 TEU	2016	185 m	MAN - 5G60ME-C9	12.7	D
1685	MSC KAYLA IMO 9242637	1,768 TEU	2002	179 m	MANISES DIESEL - 6 L 70 MC	12.7	D
1686	CAPE FERROL IMO 9359325	1,440 TEU	2008	170 m	MAN - 8S50MC-C	12.7	D
1687	A LA MARINE IMO 9386524	1,440 TEU	2009	170 m	MAN - 8S50MC-C	12.7	D
1688	EM HYDRA IMO 9338967	1,740 TEU	2005	175 m	MAN - 7S60MC-C	12.7	D
1689	BUXLINK IMO 9235816	2,478 TEU	2002	207 m	Wärtsilä - 7 RTA 72 U-B	12.7	D
1690	MSC ESHA III IMO 9326706	2,700 TEU	2007	215 m	Hitachi - 7 L70MC-C	12.7	D
1691	GSL LALO IMO 9330525	2,824 TEU	2006	222 m	Hyundai - 7K80MC-C	12.8	D
1692	BELITAKI IMO 9152923	1,684 TEU	1998	179 m	Sulzer - 6 RTA 62 U	12.8	D
1693	NIKOLAS IMO 9203526	2,506 TEU	2000	203 m	Sulzer - 7RTA72U	12.8	D
1694	MARIANNE SCHULTE IMO 9694438	2,239 TEU	2015	189 m	MAN - 6G60ME-C9	12.8	D
1695	CMA CGM NACALA IMO 9550307	1,577 TEU	2009	172 m	Mitsui - 7S60MC-C	12.8	D
1696	MSC PAXI II IMO 9256391	1,400 TEU	2004	176 m	Hudong Heavy Machinery - 7 S 60 MC-C	12.8	D
1697	PENANG BRIDGE IMO 9470753	1,708 TEU	2009	172 m	MAN - 7S60MC-C	12.8	D
1698	EA GANNET IMO 9937476	1,528 TEU	2022	172 m	Hudong Heavy Machinery - 6S50ME-C9	12.8	D
1699	NCL NORDLAND IMO 9981805	1,300 TEU	2025	150 m	MAN-B&W 6S50ME-C9-LGIM	12.8	D
1700	FAYSTON FARMS IMO 9344552	2,490 TEU	2006	212 m	3. MAJ - 7 RTA 72 UB	12.8	D

Page 34 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.