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)

#421 of 1,190 general cargos

CO₂ intensity

8.1 g CO₂/dwt·nm

vs segment average (10.91)

-25% 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

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
401	AGIOS FANOURIOS IMO 9465368	33,261	2009	179 m	MAN - 6S42MC	7.8	B
402	GOLDEN SEA IMO 9173355	15,962	1997	136 m	I-Mex Co. Ltd. 6L35MC	7.8	B
403	AMIRA LOULIA IMO 9385087	32,271	2008	177 m	Mitsubishi - 6UEC52LA	7.8	B
405	IWAMI IMO 9414981	20,142	2009	147 m	MAKITA - 6S42MC	7.9	B
404	ATLANTIC ORCHARD IMO 9638159	34,317	2014	180 m	MAN - 5S50ME-B9	7.9	B
406	MORNING IMO 9263069	46,858	2004	190 m	6S60MC	7.9	B
407	LADY MONICA IMO 9392078	35,068	2009	180 m	Mitsubishi - 6UEC52LA	7.9	B
409	ATLANTIC VOYAGER II IMO 9509671	33,299	2010	179 m	STX - 6S50MC-C7	7.9	B
408	LUCKY TRADER IMO 9427574	26,365	2011	157 m	MAKITA - 8S42MC-MKVII	7.9	B
410	ATLANTIC RUNNER II IMO 9509619	33,150	2010	179 m	STX - 6S50MC-C7	7.9	B
411	SIMAS IMO 9000314	17,012	1991	149 m	Mitsubishi - 6UEC45LA	8.0	B
412	CHIPOLBROK GALAXY IMO 9432141	30,330	2010	200 m	Wärtsilä - 7RT-flex60C	8.0	B
413	BEHCET C IMO 9503744	22,650	2009	160 m	MAN - 9L32/40	8.0	B
414	DA QING IMO 9768540	28,604	2017	180 m	Hudong Heavy Machinery - 6RT-flex50	8.1	B
415	AAL GEELONG IMO 9393539	25,821	2009	160 m	STX - 6S40ME-B	8.1	B
416	LADY ESMA IMO 9402110	31,612	2009	172 m	Mitsubishi - 6UEC52LA	8.1	B
418	AMIRA LAYLA IMO 9412622	32,047	2009	176 m	Mitsubishi - 6UEC52LA	8.1	B
417	SUNDRY IMO 9045651	7,321	2000	126 m	MAN - 6 L 40/54	8.1	B
419	SARWELLE 1 IMO 9963073	12,752	2024	142 m	YANMAR - 6EY22AW	8.1	B
420	MELOI IMO 9392119	33,355	2009	180 m	Mitsubishi - 6UEC52LA	8.1	B
421	BOCS BREMEN IMO 9438389	34,065	2011	183 m	MAN - 6S50MC-C	8.1	B
422	THE WHALE ORCA IMO 9509607	33,217	2009	179 m	STX - 6S50MC-C7	8.2	B
424	SIMAG BEIJING IMO 9638604	27,263	2012	180 m	STX - 6S50MC-C8	8.2	B
423	AAL DALIAN IMO 9498470	32,190	2013	194 m	Wärtsilä - 7RT-flex50	8.2	B
425	AAL GALVESTON IMO 9393577	25,774	2010	160 m	STX - 6S40ME-B	8.2	B
426	DSM CAPELLA IMO 9271511	37,116	2004	200 m	Hudong Heavy Machinery - 6S46MC-C	8.2	B
427	CASPIAN HARMONY IMO 9766645	31,671	2016	166 m	MAN - 6S46ME-B8.2	8.2	B
428	MANTA HATICE IMO 9338565	31,931	2007	176 m	Akasaka - 6UEC52LA	8.2	B
429	BOLTEN PANORAMA IMO 9495583	26,449	2012	157 m	MAKITA - 6S42MC	8.3	B
430	GEM STAR IMO 9496173	33,171	2011	177 m	Mitsubishi - 6UEC45LSE	8.3	B
431	MGD JOY IMO 9427586	26,307	2011	157 m	MAN - 6S42MC	8.3	B
432	SEREN IMO 9458391	28,085	2011	166 m	STX - 6S40ME-B	8.3	B
433	BOLTEN SYMI IMO 9427380	25,951	2009	157 m	MAKITA - 6S42MC	8.4	B
434	CHIPOLBROK SUN IMO 9272230	30,435	2004	200 m	Hyundai - 7RT-flex60C	8.4	B
435	JADE I IMO 9162411	25,012	1998	160 m	Mitsui - 6S42MC	8.4	B
436	EGBERT WAGENBORG IMO 9802695	14,367	2017	150 m	MAK/Caterpillar - 6M32C	8.4	B
437	SIRUS SKY IMO 9648738	7,800	2012	120 m	GUANGZHOU DIESEL ENGINE FACTORY CO., LTD. 8320ZC	8.4	B
438	DEFENDER IMO 9213210	10,613	1999	110 m	MAKITA - 7S35MC	8.4	B
439	SIDER ATLANTIC IMO 9618795	25,469	2011	157 m	STX - 7S35MC	8.5	B
440	SIDER LUCK IMO 9495595	26,307	2012	157 m	Mitsui - 6S42MC	8.5	B
441	STAR HERDLA IMO 9071557	32,744	1994	198 m	Mitsui Engineering & Shipbuilding C Ltd - Japan 6S60MC	8.5	B
443	THURAYA - M IMO 9240524	11,600	2001	118 m	Hanshin - 6L35MC	8.5	B
442	INDIGO LAKE IMO 9722443	37,507	2015	180 m	MAN - 6S46MC-C	8.5	B
444	LADY ZEHMA IMO 9303431	32,328	2005	173 m	Hitachi - 6S46MC-C	8.5	B
445	ASH BALTIC IMO 9606493	13,121	2011	120 m	Hanshin - 6S35MC	8.5	B
447	ALGRACE IMO 9154270	17,064	1999	149 m	H Cegielski - Poznan SA - Poland 5S46MC-C	8.6	B
446	HALIT BEY IMO 9511375	12,040	2008	105 m	Hanshin - LH46LA	8.6	B
448	ADELHEID BR IMO 9387621	10,860	2006	127 m	YANMAR - 8N330-EN	8.6	B
449	BLUE BEAD IMO 9171113	29,478	1998	170 m	Mitsubishi - 5UEC52LS	8.6	B
450	SIDER LION IMO 9486269	25,467	2010	157 m	STX - 7S35MC	8.7	B

Page 9 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.