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)

#800 of 2,380 general cargos

CO₂ intensity

12.1 g CO₂/dwt·nm

vs segment average (13.96)

-14% 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
752	IJZERBORG IMO 9456733	13,212	2010	143 m	MAK/Caterpillar - 6 M 43 C	11.6	B
750	HAGRID IMO 9437775	6,064	2008	100 m	YANMAR - 6N330-UN	11.6	B
753	NANA MOON IMO 9444170	11,224	2007	139 m	YANMAR - 6N330-EN	11.6	B
754	JOMI IMO 9038397	4,258	1991	88 m	MAK/Caterpillar - 8 M 332	11.6	B
755	SELAM IMO 9418286	7,935	2008	121 m	Shaanxi Diesel Heavy Industry Co Lt - China 6PC2-5L	11.6	B
757	BULKER BEE 11 IMO 9507075	13,625	2011	135 m	MAN - 6S35MC	11.6	B
756	LONGWAVE IMO 9693109	10,714	2015	130 m	Hyundai - 9H25/33P	11.6	B
758	IMMENSITY IMO 9171395	9,766	2002	108 m	Wärtsilä - W 6 L32 F	11.6	B
759	ARETHA IMO 1034333	12,246	2015	147 m	MAN-B&W 5G45ME-C9	11.7	B
760	BBC PHILIPPINES IMO 9963401	12,422	2023	147 m	MAN-B&W 5G45ME-C9	11.7	B
761	LADY SHAM IMO 9171383	9,802	2001	108 m	Wartsila Finland Oy 6L-32	11.7	B
762	MARVELLA IMO 9545493	6,825	2009	110 m	Guangzhou Diesel 8320ZC	11.7	B
766	MARFAAM IMO 9526100	8,429	2011	118 m	MAK/Caterpillar - 9M25C	11.7	B
765	NORDIC CRYSTAL IMO 9931496	6,458	2022	100 m	Wärtsilä - 6L26	11.7	B
764	MILA IMO 9501681	11,383	2013	129 m	MAK/Caterpillar - 6M32C	11.7	B
763	UNISTAR IMO 9559901	9,688	2012	132 m	ROLLS ROYCE MARINE A/S B32:40 L8P	11.7	B
767	LADY SEMA IMO 9233624	16,190	2001	137 m	Akasaka - 6UEC37LSII	11.7	B
770	AMERICABORG IMO 9365659	17,356	2007	143 m	Wärtsilä - 8 L 46 B	11.7	B
769	BUYUFIX IMO 9538957	7,500	2010	111 m	Ningbo CSI Power & Machinery Group Co Ltd GN8320ZC	11.7	B
768	FWN SPACE IMO 9735232	10,569	2018	122 m	MAK/Caterpillar - 6M32C	11.7	B
771	BBC GENOA IMO 9885300	13,417	2024	150 m	MAN - 5G45ME-C9	11.7	B
773	ALICIA IMO 1034321	12,224	2025	147 m	MAN-B&W 5G45ME-C9	11.7	B
772	FWN SPIRIT IMO 9735220	10,526	2017	122 m	MAK/Caterpillar - 6M32C	11.7	B
774	NEW GEMINI IMO 9523756	5,269	2008	97 m	CHINA G8300ZC16B-1	11.8	B
777	VECTIS PRIDE IMO 9626132	11,183	2012	124 m	MAK/Caterpillar - 6M32C	11.8	B
776	TIDAN IMO 9988528	5,077	2025	89 m	Wartsila 8L20	11.8	B
775	LONGEON IMO 9988102	8,797	2024	130 m	Yanmar 6EY22ALW	11.8	B
778	SIDER TAYRONA IMO 9728849	12,700	2015	139 m	DAHAISU DIESEL MFG.CO.LTD. 6DKM-36	11.8	B
779	ANNA 2005 IMO 9369459	5,167	2005	98 m	CHINA G8300ZC16BH	11.8	B
780	MONA IMO 9101534	7,825	1995	100 m	Krupp MaK Maschinenbau GmbH - Kiel 6M32	11.8	B
781	WAEL K IMO 9001148	8,059	1994	115 m	SKL - 6VDS48/42AL-1	11.8	B
783	FIRAT IMO 8310384	6,378	1983	105 m	Mitsubishi - 6UEC37H	11.9	B
782	ALAMOSBORG IMO 9466348	17,294	2011	143 m	Wärtsilä - 8 L 46 B	11.9	B
784	BR BROTHER IMO 8418265	8,890	1985	115 m	Hitachi Zosen Corp - Japan 6L35MC	11.9	B
785	KAREEM JUNIOR IMO 9133575	6,243	1995	97 m	Akasaka - A41	11.9	B
786	OBIRIX IMO 9504267	7,966	2008	116 m	MAK/Caterpillar - 9M252	11.9	B
787	LUCKY IMO 9037305	9,215	2002	131 m	MAK/Caterpillar - 8M32	11.9	B
788	ALBANYBORG IMO 9466300	17,294	2010	143 m	Wärtsilä - 8 L 46 B	11.9	B
789	HACI HILMI-II IMO 9014561	6,443	1992	112 m	SKL - 6VDS48/42AL-2	11.9	B
790	EEMSBORG IMO 9423748	11,287	2009	138 m	Wärtsilä - 9L32	12.0	B
792	UHL FLAIR IMO 9897133	17,113	2021	150 m	Hudong Heavy Machinery - 7S40ME-B9	12.0	B
791	INDUSTRIAL SWIFT IMO 9741152	12,337	2017	147 m	STX - 5G45ME-C9	12.0	B
793	SNP GALAXY IMO 9546930	4,502	2009	90 m	Guangzhou Diesel 6320ZCD-6	12.0	B
794	TAIGA DESGAGNES IMO 9303302	17,287	2007	143 m	MAN - 6S46MC-C	12.0	B
795	OCEAN DREAM IMO 9519511	11,939	2009	117 m	MAKITA - 6S35MC	12.0	B
796	SIDER LONDON IMO 9528706	14,121	2009	136 m	MAKITA - 7S35MC	12.0	B
799	ARKLOW BEACH IMO 9638783	8,650	2014	119 m	MAK/Caterpillar - 8M25C	12.1	B
798	GARIP BABA IMO 9564970	8,639	2010	122 m	Hyundai - 9H25/33P	12.1	B
797	CONDOR VALPARAISO IMO 9473224	17,257	2011	145 m	Hyundai - 6S50MC	12.1	B
800	AAL DAMPIER IMO 9521540	18,707	2011	149 m	Hyundai - 6RTA48T-B	12.1	B

Page 16 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.