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)

#688 of 2,380 general cargos

CO₂ intensity

10.9 g CO₂/dwt·nm

vs segment average (13.96)

-22% 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
651	CARTAGENA IMO 9521863	18,809	2012	150 m	STX - STX-MAN 5S50MC-C	10.6	B
652	AZORESBORG IMO 9466051	17,407	2010	143 m	Wärtsilä - 8 L 46 B	10.7	B
653	AQUIS PERLA IMO 9161869	10,132	1997	113 m	MAKITA - 6L35MC	10.7	B
654	GOLDEN SEA IMO 9173355	15,962	1997	136 m	I-Mex Co. Ltd. 6L35MC	10.7	B
657	TANARO RIVER IMO 9631929	7,600	2012	140 m	Ningbo CSI Power & Machinery Group Co Ltd - China G6300ZC	10.7	B
656	LAUNKALNE IMO 9504114	11,048	2010	132 m	MAK/Caterpillar - 8M32	10.7	B
655	BALTIC CRYSTAL IMO 9963487	6,458	2023	100 m	Wärtsilä - 6L26	10.7	B
659	VELA IMO 9149938	6,207	1996	140 m	SKL - 8NVDS 48A-3U	10.7	B
658	CHELSEA-1 IMO 9495612	6,135	2008	137 m	RUSSIA 6CHRN 36/45	10.7	B
660	FWN ATLANTIC IMO 9931472	12,575	2023	144 m	Wärtsilä - 6L32	10.7	B
661	MSC SHEILA F IMO 9180968	18,479	1999	150 m	MAN - 7 S 35 MC	10.7	B
662	BBC KHERSON IMO 9812016	12,435	2022	147 m	MAN - 6S40ME-B9	10.7	B
663	ATA 2 IMO 9387669	6,300	2006	119 m	Daihatsu - 8DKM-28	10.7	B
666	ADAMOON IMO 9521758	19,582	2011	150 m	STX - STX-MAN 5S50MC-C	10.8	B
665	BBC DENMARK IMO 9605891	25,039	2012	161 m	DALIAN MARINE - 6S50MC-C8	10.8	B
664	BBC SINGAPORE IMO 9964431	13,418	2024	150 m	MAN-B&W 6G45ME-C9	10.8	B
667	BBC BREMEN IMO 9971446	13,406	2025	150 m	MAN-B&W 6G45ME-C9	10.8	B
668	HAYRIYE ANA IMO 9557953	8,383	2009	118 m	Daihatsu - 8DKM-28	10.8	B
669	HARTURA IMO 9546447	12,223	2009	140 m	YANMAR - 8N330-EN	10.8	B
672	HERMANA IMO 9545948	12,223	2010	140 m	YANMAR - 8N330-EN	10.8	B
671	SIMONA IMO 9437763	6,060	2007	100 m	YANMAR - 6N330-UN	10.8	B
670	ONEGO ISLE IMO 9626156	11,183	2012	124 m	CATERPILLAR MORTONEN 6M32C	10.8	B
673	ESLEM IMO 9148154	3,452	1997	89 m	Wärtsilä - 8L20	10.8	B
674	SCALA IMO 9370628	6,826	2006	115 m	CHINA G8300ZC16B	10.8	B
675	LARISSA 1 IMO 9154268	17,064	1999	149 m	5S46MC-C	10.8	B
676	ENAS H IMO 9610822	10,034	2011	114 m	Akasaka - A45S	10.9	B
677	JORIX IMO 9419802	8,191	2006	116 m	Daihatsu - 8DKM-28	10.9	B
679	VIVIAN IMO 9620358	7,636	2011	116 m	Guangzhou Diesel Engine Factory Co Ltd - China 8320ZCD-8	10.9	B
678	ELBEBORG IMO 9568249	12,004	2011	145 m	Wärtsilä - 9L32	10.9	B
680	ARUBABORG IMO 9466295	17,407	2010	143 m	Wärtsilä - 8 L 46 B	10.9	B
681	HOSEI FORTUNE IMO 9542879	12,916	2009	120 m	Hanshin - 6L35MC	10.9	B
682	K.DADAYLI IMO 9513191	9,293	2009	122 m	Hyundai - 9H25/32P	10.9	B
683	BBC SANTIAGO IMO 9964429	13,405	2024	150 m	MAN-B&W 6G45ME-C9	10.9	B
685	K HAK IMO 9532848	12,611	2009	128 m	MAKITA - 6L35MC	10.9	B
684	CENGIZ AMCA IMO 9616096	11,051	2013	132 m	Wärtsilä - 6L32	10.9	B
686	SANDRA IMO 9549669	13,549	2009	120 m	YANMAR - 8N330-EN	10.9	B
687	EEBORG IMO 9568328	11,901	2012	145 m	Wärtsilä - 9L32	10.9	B
688	BBC ROSTOV IMO 9964443	12,422	2024	147 m	MAN-B&W 5G45ME-C9	10.9	B
689	BBC NORWAY IMO 9593658	24,976	2012	161 m	MAN - 6S50MC-C	11.0	B
690	ERIEBORG IMO 9463437	11,217	2009	138 m	Wärtsilä - 9L32	11.0	B
691	ISMAIL S IMO 9546007	12,232	2011	140 m	YANMAR - 8N330-EN	11.0	B
692	T-MED IMO 9163142	6,830	1997	106 m	Mitsui - 5L35MC	11.0	B
693	COSKUNLAR 2 IMO 8943351	2,276	1998	77 m	SKL - 8NVD48	11.0	B
694	STARVIP IMO 9326495	18,500	2007	147 m	MAK/Caterpillar - 6S50MC-C	11.0	B
695	HAKKI AYKIN IMO 9045730	6,962	2004	102 m	MAK/Caterpillar - 6L40/54	11.0	B
697	BOHWA QUANZHOU IMO 9311244	13,276	2004	120 m	MAN - 6L35MC	11.0	B
696	ALGRACE IMO 9154270	17,064	1999	149 m	H Cegielski - Poznan SA - Poland 5S46MC-C	11.0	B
699	BOZKURT IMO 9171371	10,555	2000	108 m	Wärtsilä - 6L32	11.0	B
698	BBC FINLAND IMO 9593684	24,983	2012	161 m	MAN - 6S50MC-C	11.0	B
700	TQ TRABZON IMO 1078614	9,770	—	125 m	Chinese Std. Type 6320ZC	11.1	B

Page 14 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.