Most Emission-Efficient General Cargos

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)

#885 of 2,380 general cargos

CO₂ intensity

12.6 g CO₂/dwt·nm

vs segment average (13.96)

-9% 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 (DWT)

All sizes < 25,000 DWT 25k – 60k DWT 60k – 100k DWT 100k – 200k DWT > 200,000 DWT

Year

2025 2024

2,429

vessels ranked

3.13

greenest (g CO₂/t·nm)

14.48

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
851	CELIK 1 IMO 9430791	7,702	2007	121 m	Shaanxi Diesel Engine Heavy Industry Co. Ltd. 6PC2-6	12.4	B
852	TQ ISTANBUL IMO 9006332	3,712	1993	88 m	Deutz - SBV8M628	12.4	B
853	AMY IMO 1034319	12,207	2025	147 m	MAN-B&W 5G45ME-C9	12.4	B
854	VECTIS PROGRESS IMO 9626144	11,051	2012	124 m	MAK/Caterpillar - 6M32C	12.4	B
855	EKMEN STAR IMO 9218193	7,580	2001	108 m	Ssangyong - 7 S 26 MC	12.4	B
856	SAMPOGRACHT IMO 9288071	23,661	2005	185 m	Wärtsilä - 6L64	12.5	B
857	PAN BOREAS IMO 9488645	8,091	2008	116 m	YANMAR - 6N330-EN	12.5	B
858	CONDOR BILBAO IMO 9473250	17,287	2012	145 m	Hyundai - 6S50MC	12.5	B
859	ATA 1 IMO 9378010	6,300	2006	115 m	Daihatsu - 8DKM-28	12.5	B
860	BBC PERU IMO 9549592	13,537	2012	146 m	MAK/Caterpillar - 9M32C	12.5	B
861	LAGA IMO 9006318	3,710	1993	88 m	Deutz - SBV8M628	12.5	B
862	NOSSAN IMO 9988516	5,080	2024	89 m	Wartsila 8L20	12.5	B
863	ECO TROPHY IMO 9938688	9,120	2024	133 m	MAK/Caterpillar - 6M32C	12.5	B
864	ELKE K. IMO 9879040	5,180	2020	87 m	MAK/Caterpillar - 6M25C	12.5	B
865	NORMA IMO 9306419	8,100	2006	108 m	MAN - 7S26MC	12.5	B
866	KELLY IMO 9255622	9,857	2004	132 m	MAK/Caterpillar - 6L38B	12.5	B
867	AMSTELBORG IMO 9333527	17,356	2006	143 m	Wärtsilä - 8 L 46 B	12.6	B
869	CSL FLEXVIK IMO 9521825	18,003	2012	150 m	STX - STX-MAN 5S50MC-C	12.6	B
868	MERCURIUS IMO 9622394	5,802	2012	112 m	Guangzhou Diesel Engine Factory Co Ltd - China 8320ZCD-6	12.6	B
871	GOTLAND IMO 9480136	17,370	2011	144 m	Wärtsilä - 6RTA48T	12.6	B
870	CHARLIE IMO 9736236	12,234	2022	148 m	MAN - 6S40ME-B9	12.6	B
872	INDUSTRIAL MOMENTUM IMO 9534432	10,053	2010	116 m	MAK/Caterpillar - 8M32C	12.6	B
873	ECO TRIUMPH IMO 9938717	9,000	2025	133 m	MAK/Caterpillar - 6M32C	12.6	B
874	JANINE IMO 9014664	3,700	1991	89 m	MWM - SBV8M628	12.6	B
875	ANKA BLUE IMO 9317808	8,181	2005	120 m	MAK/Caterpillar - 8M32C	12.6	B
876	NORTHSTAR GLORY IMO 9033854	3,859	1992	94 m	Hanshin - 6 EL 38	12.6	B
877	ARKLOW MANOR IMO 9440241	14,998	2009	136 m	MAK/Caterpillar - 6 M 43 C	12.6	B
878	GEMINI MAESTRO IMO 9350006	7,448	2007	120 m	Daihatsu - 8DKM-28	12.6	B
879	NISA SOFUOGLU IMO 9554121	6,565	2010	109 m	MAK/Caterpillar - 6M25	12.6	B
882	IBRAHIM KONAN IMO 9306328	8,107	2006	108 m	STX - 7 S 26 MC-MK6	12.6	B
881	HELEN H IMO 9139115	5,278	1996	101 m	MAK/Caterpillar - 8M32	12.6	B
880	RIX FLEVO IMO 9139335	4,466	1996	88 m	MWM - SBV9M628	12.6	B
884	EKMEN ROYAL IMO 9165865	10,334	2005	126 m	H. CEGIELSKI - FSA SP. Z O.O. 8L35MC	12.6	B
883	ARKLOW MARSH IMO 9440253	14,998	2010	136 m	MAK/Caterpillar - 3056-DITA	12.6	B
886	ADA IMO 1060784	8,311	2024	142 m	Yanmar 6EY22AW	12.7	B
885	RONNIE IMO 9736224	12,234	2021	148 m	MAN - 6S40ME-B9	12.7	B
887	SVEND IMO 1034357	12,195	2025	147 m	MAN-B&W 5G45ME-C9	12.7	B
890	IANA IMO 1030375	5,033	2025	87 m	—	12.7	B
889	SPRING IMO 8408650	8,881	1985	115 m	Mitsubishi - 7UEC37H-IIB	12.7	B
888	SEELAND IMO 9228930	3,132	2001	88 m	MAK/Caterpillar - 8M20	12.7	B
891	TEVFIK BEY IMO 9383326	7,702	2007	121 m	Shaanxi Diesel Engine Heavy Industry Co. Ltd. 6PC2-6	12.7	B
892	ARKLOW BAY IMO 9638771	8,658	2014	119 m	MAK/Caterpillar - 8M25C	12.7	B
894	VECHTBORG IMO 9160334	9,567	1998	132 m	Wärtsilä - 6R38	12.7	B
893	MARIE LEHMANN IMO 9728772	6,343	2024	107 m	A.B.C. 8DZC	12.7	B
895	NEULAND IMO 9117959	3,189	1995	90 m	MAK/Caterpillar - 8M20	12.7	B
897	ARKLOW MUSE IMO 9509487	14,998	2013	136 m	MAK/Caterpillar - 6 M 43 C	12.7	B
896	ONEGO CAPRI IMO 9245275	10,273	2002	139 m	MAK/Caterpillar - 8M32C	12.7	B
900	ECO TRUST IMO 9933925	9,110	2023	133 m	MAK/Caterpillar - 6M32C	12.7	B
899	HAV DOLPHIN IMO 9073854	3,053	1993	88 m	Deutz - SBV6M628	12.7	B
898	STINNES ZEPHIR IMO 9473236	17,273	2011	145 m	MAN - 6S50MC	12.7	B

Page 18 of 48 — 2,380 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.