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)

#719 of 2,380 general cargos

CO₂ intensity

11.2 g CO₂/dwt·nm

vs segment average (13.96)

-19% 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
701	ADELHEID BR IMO 9387621	10,860	2006	127 m	YANMAR - 8N330-EN	11.1	B
703	FAYZE K IMO 8884555	8,284	1993	121 m	SKL - 6VDS48/42AL-2	11.1	B
702	BBC SAO PAULO IMO 9934266	13,389	2025	150 m	MAN-B&W 5G45ME-C9	11.1	B
705	MARTINA IMO 9594286	8,564	2012	110 m	MAK/Caterpillar - 6M32C	11.1	B
704	SEVKETTIN SONAY IMO 9334313	14,888	2006	143 m	MAN - 6L35MC	11.1	B
706	VIKINGBANK IMO 9604184	11,940	2012	143 m	MAK/Caterpillar - 8M32C	11.1	B
708	FWN ARCTIC IMO 9931484	12,563	2023	144 m	Wärtsilä - 6L32	11.1	B
707	JOY EXPRESS IMO 9378254	9,692	2006	116 m	Daihatsu - 8DKM-28	11.1	B
709	BRAVE KNIGHT IMO 7129336	6,348	1972	101 m	MAK/Caterpillar - 6MU551AK	11.1	B
710	AZZA H IMO 9016090	3,883	1991	90 m	Niigata - 6M34AFT	11.1	B
712	ACQUA STELLA IMO 9213210	10,613	1999	110 m	MAKITA - 7S35MC	11.1	B
711	FENER IMO 9381940	5,058	2006	100 m	JIANGSU ANTAI POWER MACHINERY CO.,LTD G8300ZC168	11.1	B
713	KC MERMAID IMO 9505156	7,184	2021	116 m	Ningbo CSI Power & Machinery Group Co Ltd G8300ZC	11.2	B
714	NERMIN KARABEKIR IMO 9591820	10,953	2011	122 m	Hyundai - 8H32/40P	11.2	B
715	BBC ODESA IMO 9963413	12,422	2023	147 m	MAN-B&W 5G45ME-C9	11.2	B
716	CHELSEA-3 IMO 9361392	5,827	2006	137 m	SKL - 8NVD48A-2U	11.2	B
717	ECO TRINITY IMO 9938705	9,000	2024	133 m	MAK/Caterpillar - 6M32C	11.2	B
718	BBC ST. PETERSBURG IMO 9736200	12,396	2020	148 m	MAN - 6S40ME-B9	11.2	B
719	CHELSEA-7 IMO 9492634	6,320	2010	137 m	GERMANY 8NVD 48A-2U	11.3	B
721	ARIANNA IMO 9406702	11,731	2007	140 m	SEMT PIELSTICK, SAINT DENIS FRANCE 8 PC 2-5 L	11.3	B
720	BBC HOUSTON IMO 9885295	13,451	2024	150 m	MAN - 5G45ME-C9	11.3	B
723	MICK IMO 9736183	12,234	2019	147 m	MAN - 6S40ME-B9	11.3	B
722	APHRODITE I IMO 9372468	10,315	2006	134 m	Daihatsu - 8DKM-28	11.3	B
724	SUEVE IMO 1068035	5,057	2025	87 m	—	11.3	B
725	HIZIR IMO 9396529	8,128	2007	121 m	SHAANXI DIESEL HEAVY INDUSTRY CO., LTD. 6 PC 2-SL	11.3	B
726	SIYA IMO 9442108	10,475	2007	132 m	Shaanxi Diesel Engine Heavy Industry Co. Ltd. 8PC2-5L	11.3	B
727	CHELSEA-2 IMO 9314442	5,457	2005	140 m	RUSSIA 6CHRN 36/45	11.3	B
729	UAL CASTLE IMO 9626168	11,183	2013	124 m	MAK/Caterpillar - 6M32C	11.3	B
728	EKMEN GLORY IMO 9384186	8,555	2007	108 m	STX - 7 S 26 MC-MK6	11.3	B
731	GM YONGAN IMO 9509683	33,249	2010	179 m	STX - 6S50MC-C7	11.3	B
730	FWN ANTARCTIC IMO 9970521	12,539	2024	144 m	Wärtsilä - 6L32	11.3	B
732	EDENBORG IMO 9463449	11,217	2010	138 m	Wärtsilä - 9L32	11.3	B
733	LONGEARTH IMO 9988114	8,730	2025	130 m	Yanmar 6EY22ALW	11.4	B
734	SH EXPRESS IMO 9085443	8,177	1994	100 m	Hanshin - 6 EL 44	11.4	B
736	LONGERA IMO 9988097	8,797	2024	130 m	Yanmar 6EY22ALW	11.4	B
735	ARKLOW ACCORD IMO 9851945	8,543	2020	120 m	MAK/Caterpillar - 6M25C	11.4	B
737	TIARA IMO 9437804	6,060	2008	100 m	YANMAR - 6N330-UN	11.4	B
738	HOPTERIX IMO 9645841	7,540	2012	108 m	Shaanxi Diesel Engine Heavy Industry Co. Ltd. 8DKM-28	11.4	B
739	STINNES PASSAT IMO 9473248	17,299	2011	145 m	Hyundai - 6S50MC	11.4	B
740	REBECCA IMO 9437787	6,060	2008	100 m	YANMAR - 6N330-UN	11.4	B
741	HELME IMO 9504140	11,023	2011	132 m	MAK/Caterpillar - 8M32	11.4	B
742	ARKLOW ACE IMO 9851957	8,543	2020	120 m	MAK/Caterpillar - 6M25C	11.5	B
743	EIRA IMO 9225299	19,625	2001	158 m	Mitsui - 6S46MC-C	11.5	B
745	AAL KEMBLA IMO 9498353	31,000	2011	194 m	Wärtsilä - 7RT-flex50-B	11.5	B
744	MANASSA MIRA M IMO 9081992	8,929	1997	115 m	Wärtsilä - 8R32E	11.5	B
746	DA KANG IMO 9608312	29,863	2013	180 m	MAN - 6S50ME-B8	11.5	B
747	ICE CRYSTAL IMO 9818321	6,706	2018	105 m	Wartsila Finland Oy 6L26	11.6	B
750	IJZERBORG IMO 9456733	13,212	2010	143 m	MAK/Caterpillar - 6 M 43 C	11.6	B
749	BULKER BEE 10 IMO 9507087	13,784	2010	135 m	MAN - 6S35MC	11.6	B
748	HAGRID IMO 9437775	6,064	2008	100 m	YANMAR - 6N330-UN	11.6	B

Page 15 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.