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)

#640 of 2,380 general cargos

CO₂ intensity

10.4 g CO₂/dwt·nm

vs segment average (13.96)

-26% 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
601	NORD LOTUS IMO 9742390	16,963	2015	132 m	MAN - 7 S 35 MC	9.9	B
602	FLEVOBORG IMO 9419292	14,603	2010	143 m	Wärtsilä - 9L32C	9.9	B
603	FIVELBORG IMO 9419307	14,603	2010	143 m	Wärtsilä - 9L32C	9.9	B
604	DA DE IMO 9608403	29,572	2014	180 m	HHM Shangchuan Diesel 6S50ME-C8	9.9	B
605	ALPPILA IMO 9381706	20,499	2011	155 m	MAN - 6S50MC-C	9.9	B
606	MUZAFFER ANA IMO 9554157	12,447	2010	148 m	MAK/Caterpillar - 8M32C	9.9	B
607	PROGRESS IV IMO 8358130	7,400	2006	122 m	Daihatsu 8DKM-28	9.9	B
608	BOHWA AMOY IMO 9300958	10,084	2005	101 m	MAKITA - 5L35MC-MKVI	9.9	B
609	ASH ADRIATIC IMO 9614830	10,609	2012	124 m	Hyundai - 9H25/33P	9.9	B
610	DA XIN IMO 9608427	29,565	2014	180 m	HHM Shangchuan Diesel 6S50ME-C8	10.0	B
612	ENVAR IMO 9098696	4,705	2005	100 m	Wuxi - G8300ZC	10.0	B
611	THAMESBORG IMO 9546459	21,359	2013	172 m	Wärtsilä - 6L46F	10.0	B
613	PRINCESS MARIAM IMO 9407005	7,004	2006	117 m	Guangzhou Diesel Engine Factory Co Ltd - China 8320ZCD-8	10.0	B
614	JOY LINE IMO 9370094	14,376	2007	138 m	MAN - 7 S 35 MC	10.0	B
616	ARIF AMCA IMO 9616084	11,086	2012	132 m	Wärtsilä - 6L32	10.0	B
615	CHIPOLBROK SUN IMO 9272230	30,435	2004	200 m	Hyundai - 7RT-flex60C	10.0	B
617	PADEREWSKI IMO 9731389	31,673	2016	190 m	Hudong Heavy Machinery - 6RT-flex50	10.1	B
618	BSN VOYAGER IMO 9021095	4,557	1991	88 m	MWM - SBV9M628	10.1	B
619	SUNDRY IMO 9045651	7,321	2000	126 m	MAN - 6 L 40/54	10.1	B
620	ADNAN N IMO 9334973	11,792	2006	115 m	Hanshin - 6L35MC	10.1	B
621	VERACRUZ IMO 9521849	19,596	2012	150 m	STX - STX-MAN 5S50MC-C	10.1	B
622	ASH BALTIC IMO 9606493	13,121	2011	120 m	Hanshin - 6S35MC	10.1	B
623	NOWOWIEJSKI IMO 9710189	31,664	2016	190 m	Wärtsilä - 6RT-flex50	10.1	B
625	ROYAL II IMO 9355109	13,721	2007	133 m	MAKITA - 7L35MC-MKVI	10.2	B
624	SANTORINI IMO 9181493	24,460	1998	158 m	Mitsui - 6L42MC	10.2	B
627	PRINCE JOY IMO 9644251	22,983	2012	160 m	MAN - 7S35MC-5	10.2	B
626	SAADET IMO 9522063	12,198	2009	140 m	YANMAR - 8N330-EN	10.2	B
628	SELECTA IMO 9424807	14,030	2007	146 m	CHINA 8PC2-5L	10.2	B
629	MATSUSHIRO IMO 9477672	13,815	2009	125 m	MAKITA - 7S35MC-MKVI	10.2	B
631	FRASERBORG IMO 9419319	14,603	2011	143 m	Wärtsilä - 9L32C	10.3	B
630	ANT IMO 9412311	5,095	2006	100 m	Wuxi - G8300ZC	10.3	B
632	KARANFIL IMO 9369162	12,616	2008	128 m	MAKITA - 6L35MC	10.3	B
633	FWN ADRIATIC IMO 9970533	12,544	2025	144 m	Wärtsilä - 6L32	10.3	B
635	GLEN A IMO 9015046	4,258	1990	88 m	MAK/Caterpillar - 8M332AK	10.3	B
634	WLADYSLAW ORKAN IMO 9271925	30,435	2003	200 m	Hyundai - 7RT-flex60C	10.3	B
636	TIBER RIVER IMO 9650949	7,402	2014	140 m	Ningbo CSI Power & Machinery Group Co Ltd - China G6300ZC	10.3	B
638	YM EVEREST IMO 9653812	16,717	2014	152 m	MAN - 8L32/44CR	10.3	B
637	AKDENIZ S IMO 9519377	9,161	2008	129 m	MAK CATERPILLAR 9M25	10.3	B
639	EXEBORG IMO 9650482	11,950	2013	145 m	MAK/Caterpillar - 9L32	10.4	B
640	SEHER YAGCI IMO 9556911	10,450	2009	118 m	Daihatsu - 8DKM-28	10.4	B
641	LIDER HALIL IMO 9462275	10,264	2020	136 m	MAK/Caterpillar - 8 M 43 C	10.4	B
642	BEGONIA IMO 9445540	12,119	2007	140 m	Shaanxi Diesel Engine Heavy Industry Co. Ltd. 8PC2-6L	10.4	B
643	SIVUMUT IMO 9501253	12,747	2010	138 m	MAK/Caterpillar - 6 M 43 C	10.5	B
644	HELENE JULIE IMO 9287314	13,988	2004	136 m	Wärtsilä - 9M32C	10.5	B
645	HOSEI PEARL IMO 9543263	12,916	2009	120 m	MAKITA - 6L35MC	10.5	B
646	ALEXIA I IMO 9365049	10,887	2005	133 m	SHAANXI DIESEL ENGINE HEAVY INDUSTRY CO., LTD. 6 PC2 - 5L	10.5	B
648	VLIEBORG IMO 9554781	11,902	2012	143 m	MAK/Caterpillar - 8M32C	10.5	B
647	ALUNA IMO 9590773	11,287	2011	134 m	GERMANY 9M 25 (MAK)	10.5	B
649	KUBROSLI Y IMO 8000836	11,990	1981	138 m	9TM410	10.5	B
650	VOLGABORG IMO 9631072	11,902	2013	143 m	MAK/Caterpillar - 9M25C	10.6	B

Page 13 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.