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)

#1,079 of 2,098 container ships

CO₂ intensity

8.6 g CO₂/dwt·nm

vs segment average (10.39)

-17% 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
1051	KINGSTON IMO 9389693	4,250 TEU	2008	260 m	MAN - 8K90MC-C	8.5	C
1052	SANTA VIOLA IMO 9295373	5,599 TEU	2005	275 m	Hyundai - 10 K 98 MC-C	8.5	C
1053	SEASPAN SAIGON IMO 9301809	4,253 TEU	2006	260 m	MAN - 8K90MC-C	8.5	C
1054	MED BEYKOZ IMO 9064748	2,480 TEU	1994	203 m	KOREA HEAVY INDUSTRIES & CONSTRUCTION, CHANGWON SOUTH KOREA 7 S 70 MC	8.5	C
1055	MOL PROFICIENCY IMO 9403619	6,350 TEU	2007	293 m	MAN - 11K98MC	8.5	C
1056	MAERSK DURBAN IMO 9299044	2,478 TEU	2005	208 m	Hitachi - 7 L 70 MC-C- MK7	8.5	C
1057	LIVORNO EXPRESS IMO 9610157	3,800 TEU	2014	228 m	Wärtsilä - 7RT-flex82C	8.5	C
1058	MSC UNITED VIII IMO 9302619	8,200 TEU	2006	336 m	Hyundai - HHI-MAN B&W 12K98MC MK6	8.5	C
1059	MAERSK KANSAS IMO 9311701	4,154 TEU	2007	292 m	Wärtsilä - 8RT-flex96C	8.5	C
1060	MAERSK NORFOLK IMO 9356139	2,478 TEU	2008	210 m	Doosan - 7L70ME-C	8.5	C
1061	MAERSK ATLANTA IMO 9348649	6,400 TEU	2006	299 m	Wärtsilä - 10RT-flex96C	8.5	C
1062	MSC HANNAH IMO 9316347	2,732 TEU	2006	211 m	MAN - 7S70MC-C	8.5	C
1063	MSC AMALFI IMO 9605279	9,400 TEU	2014	300 m	MAN - 9S90ME-C9	8.5	C
1064	DETROIT EXPRESS IMO 9610169	3,800 TEU	2014	228 m	Wärtsilä - 7RT-flex82C	8.5	C
1065	CAPE SPENCER IMO 9950129	2,713 TEU	2023	189 m	Hudong Heavy Machinery Co Ltd - China 7S60ME-C10-HPSCR	8.5	C
1066	GSL ELENI IMO 9285677	7,455 TEU	2004	300 m	Hyundai - 12 RTA 96 C-B	8.6	C
1067	MAERSK NARMADA IMO 9356098	2,478 TEU	2008	211 m	Doosan - 7L70ME-C	8.6	C
1068	MSC CATHERINE VI IMO 9229300	6,200 TEU	2001	300 m	Sulzer - 7RTA84C	8.6	C
1069	MSC ATLANTIC III IMO 8913447	2,668 TEU	1991	237 m	BREMER VULKAN AG SCHIFFBAU UND MASCHINENFABRIK 7 L 80 MC	8.6	C
1070	ITAL BONUS IMO 9786994	2,800 TEU	2018	212 m	Hitachi - 8S70ME-C8	8.6	C
1071	MSC MADRID IMO 9480198	5,550 TEU	2011	270 m	MAN - 7K98MC-C	8.6	C
1072	MAERSK NOKWANDA IMO 9294393	4,045 TEU	2005	266 m	Sulzer - 8RT-flex96C	8.6	C
1073	MAERSK IDAHO IMO 9193264	4,338 TEU	2000	292 m	Hyundai - 10K90MC-C	8.6	C
1074	MSC GUERNSEY IMO 9631876	4,699 TEU	2015	251 m	Hyundai - 6S80ME-C9	8.6	C
1075	CMA CGM TOPAZ IMO 9397602	4,300 TEU	2009	260 m	Doosan - 8K90MC-C	8.6	C
1076	MSC RONIT R IMO 9293167	4,922 TEU	2005	294 m	Sulzer - 9RTA96C	8.6	C
1077	MSC POLARIS IMO 9074042	4,743 TEU	1995	300 m	Mitsubishi - 12RTA84C	8.6	C
1078	VAYENGA MAERSK IMO 9775751	3,600 TEU	2018	200 m	STX - 6G60ME-C9	8.6	C
1079	MSC NORA III IMO 9327671	2,732 TEU	2006	211 m	MAN - 7S70MC-C	8.6	C
1080	NINGBO IMO 9398400	7,500 TEU	2009	334 m	MAN - 12K98MC	8.6	C
1081	MAERSK UTAH IMO 9305300	4,154 TEU	2006	292 m	Sulzer - 8RT-flex96C	8.6	C
1082	HMM BANGKOK IMO 9323510	6,763 TEU	2007	304 m	MAN - 12K98MC-C	8.6	C
1083	MSC AGADIR IMO 9619464	8,762 TEU	2012	299 m	Hyundai - 9S90ME-C8	8.6	C
1084	NYK CONSTELLATION IMO 9337626	4,888 TEU	2007	294 m	MAN - 9K98MC-C	8.6	C
1085	MED MERSIN IMO 9135638	2,908 TEU	1996	196 m	Hyundai - 8 RTA 72 U	8.6	C
1086	MAERSK BROWNSVILLE IMO 9313955	4,196 TEU	2007	294 m	Wärtsilä - 12RT-flex96C	8.6	C
1087	MAERSK IOWA IMO 9298686	4,154 TEU	2006	292 m	Sulzer - 8RT-flex96C	8.6	C
1088	CMA CGM RODOLPHE IMO 9729075	9,400 TEU	2017	300 m	CSSC - 9S90ME-C9	8.7	C
1089	CMA CGM BARRACUDA IMO 9322475	5,090 TEU	2007	294 m	Hyundai - 9 K 90 MC-C	8.7	C
1090	MSC MONTEREY V IMO 9349796	4,860 TEU	2007	275 m	MAN - 7K98MC-C	8.7	C
1091	HMM OAKLAND IMO 9385013	6,350 TEU	2009	293 m	MAN - 11K98MC	8.7	C
1092	MAERSK BAHAMAS IMO 9697026	2,500 TEU	2016	195 m	Hudong Heavy Machinery - 6G60ME-C9	8.7	C
1093	HYUNDAI SINGAPORE IMO 9305685	6,763 TEU	2006	304 m	MAN - 12K98MC-C	8.7	C
1094	MSC NEW HAVEN IMO 9293777	8,084 TEU	2005	334 m	Sulzer - 12RTA96C	8.7	C
1095	CMA CGM FRANCOISE SAGAN IMO 9356696	6,661 TEU	2008	304 m	Hyundai - 11K98ME-C	8.7	C
1096	KASSIAKOS IMO 9386471	4,360 TEU	2009	259 m	MAN - 8K90MC-C	8.7	C
1097	GLEN CANYON IMO 9302097	5,642 TEU	2006	285 m	MAN - 11K98MC	8.7	C
1098	MSC MARGARITA IMO 9238741	5,514 TEU	2002	277 m	SAMSUNG HEAVY INDUSTRIES CO., LTD. GEOJE SHIPYARD 12 K 90 MC	8.7	C
1099	LUNA MAERSK IMO 9190781	4,045 TEU	2002	266 m	Doosan - 10K90MC	8.8	C
1100	CHACABUCO IMO 9295957	5,527 TEU	2006	276 m	Sulzer - 10RT-flex96C	8.8	C

Page 22 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.