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 2024. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2024)

#777 of 1,190 general cargos

CO₂ intensity

13.1 g CO₂/dwt·nm

vs segment average (10.91)

+20% 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 (DWT)

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

Year

2025 2024

1,215

vessels ranked

3.23

greenest (g CO₂/t·nm)

11.21

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
751	VIRGINIABORG IMO 9234290	9,861	2001	132 m	Wärtsilä - 6R38	12.8	D
752	MANISA SOFIA IMO 9428396	12,500	2011	137 m	Wärtsilä - 6L46B	12.8	D
753	JOY EXPRESS IMO 9378254	9,692	2006	116 m	Daihatsu - 8DKM-28	12.8	D
754	ALAMOSBORG IMO 9466348	17,294	2011	143 m	Wärtsilä - 8 L 46 B	12.8	D
755	IJBORG IMO 9456721	13,212	2009	143 m	MAK/Caterpillar - 6M43	12.8	D
756	ESL EUROPA IMO 9333553	17,300	2007	143 m	Wärtsilä - 8 L 46 B	12.8	D
757	GOTLAND IMO 9480136	17,370	2011	144 m	Wärtsilä - 6RTA48T	12.8	D
758	FREYJA W IMO 9754422	12,245	2018	138 m	Yichang - 6S40ME-B9	12.9	D
759	FWN STAR IMO 9721645	10,549	2015	122 m	MAK/Caterpillar - 6M32C	12.9	D
760	ARKLOW MUSE IMO 9509487	14,998	2013	136 m	MAK/Caterpillar - 6 M 43 C	12.9	D
761	ALBANYBORG IMO 9466300	17,294	2010	143 m	Wärtsilä - 8 L 46 B	12.9	D
762	FRIEDRICH IMO 9594298	8,690	2012	110 m	MAK/Caterpillar - 6M32C	12.9	D
763	MICK IMO 9736183	12,234	2019	147 m	MAN - 6S40ME-B9	12.9	D
764	FRIGG W IMO 9754410	12,247	2017	138 m	Yichang - 6S40ME-B9	12.9	D
765	QAMUTIK IMO 9081289	12,760	1994	136 m	Wärtsilä - 6R46	12.9	D
766	COE LUISA IMO 9435026	12,669	2008	138 m	MAK/Caterpillar - 6 M 43 C	13.0	D
767	ARKLOW MOOR IMO 9509475	14,998	2011	136 m	MAK/Caterpillar - 6 M 43 C	13.0	D
768	EKMEN GLORY IMO 9384186	8,555	2007	108 m	STX - 7 S 26 MC-MK6	13.0	D
769	SAMPOGRACHT IMO 9288071	23,661	2005	185 m	Wärtsilä - 6L64	13.0	D
770	AMIRA JOY IMO 9558452	8,500	2009	132 m	MAK/Caterpillar - 9M25	13.0	D
771	KEITH IMO 9736195	12,234	2019	147 m	Jiangsu Antai Power Co. Ltd. 5G45ME-C9	13.0	D
772	GWEN IMO 9402067	12,693	2008	139 m	MAK/Caterpillar - 6 M 43 C	13.0	D
773	UAL HARRIER IMO 9594303	8,690	2012	110 m	MAK/Caterpillar - 6M32C	13.0	D
774	BLUE CAPRAMAR IMO 9641845	7,800	2012	120 m	Guangzhou 8320ZC	13.0	D
775	ORIS JUL IMO 9116084	8,258	1996	116 m	Wärtsilä - 9R32E	13.1	D
776	ZEA SERVANT IMO 9741126	12,302	2018	147 m	STX - 5G45ME-C9	13.1	D
777	KELLY IMO 9255622	9,857	2004	132 m	MAK/Caterpillar - 6L38B	13.1	D
778	EYUP IMO 9306392	8,709	2005	108 m	STX - 7 S 26 MC-MK6	13.1	D
779	NUNALIK IMO 9466996	12,662	2009	138 m	MAK/Caterpillar - 6 M 43 C	13.1	D
780	ANKA BLUE IMO 9317808	8,181	2005	120 m	MAK/Caterpillar - 8M32C	13.1	D
781	MARIO C IMO 9364526	13,422	2019	130 m	Caterpillar Inc - USA MAK (Krupp MAK)	13.1	D
782	UAL HOUSTON IMO 9542348	8,703	2012	127 m	MAK/Caterpillar - 6M32	13.1	D
783	CHARLIE IMO 9736236	12,234	2022	148 m	MAN - 6S40ME-B9	13.1	D
784	DZ YANTAI IMO 9247405	17,539	2001	143 m	Wärtsilä - 6L46B	13.1	D
785	TEVFIK BEY IMO 9383326	7,702	2007	121 m	Shaanxi Diesel Engine Heavy Industry Co. Ltd. 6PC2-6	13.2	D
786	ARKLOW MANOR IMO 9440241	14,998	2009	136 m	MAK/Caterpillar - 6 M 43 C	13.2	D
787	ARISTO IMO 9229116	9,682	2000	132 m	Wärtsilä - 6 L 38	13.2	D
788	TEONA IMO 9648843	7,000	2013	120 m	MAK/Caterpillar - 6M32C	13.2	D
789	ARKLOW BRAVE IMO 9638800	8,632	2015	119 m	MAK/Caterpillar - 8M25C	13.2	D
790	EKMEN SKY IMO 9384174	8,523	2006	108 m	STX - 7 S 26 MC-MK6	13.2	D
791	FINN II IMO 9534468	10,049	2012	116 m	MAK/Caterpillar - 8M32C	13.2	D
792	WOLF IMO 9306407	8,120	2006	108 m	MAN - 7S26MC	13.2	D
793	ONEGO CAPRI IMO 9245275	10,273	2002	139 m	MAK/Caterpillar - 8M32C	13.2	D
794	UAL AFRICA IMO 9529243	8,327	2011	119 m	MAK/Caterpillar - 6M32	13.3	D
795	LUCKY IMO 9037305	9,215	2002	131 m	MAK/Caterpillar - 8M32	13.3	D
796	SPAARNEGRACHT IMO 9202558	21,311	2000	168 m	Wärtsilä - 6L64	13.3	D
797	SUOMIGRACHT IMO 9288057	23,661	2004	185 m	Wärtsilä - 6L64	13.3	D
798	TIDE NAVIGATOR IMO 9526083	8,284	2011	118 m	MAK/Caterpillar - 9M25C	13.3	D
799	AMSTELBORG IMO 9333527	17,356	2006	143 m	Wärtsilä - 8 L 46 B	13.3	D
800	ESL AMERICA IMO 9347035	17,349	2006	143 m	Yichang - 6 S 46 MC-C	13.3	D

Page 16 of 24 — 1,190 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.