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)

#361 of 1,190 general cargos

CO₂ intensity

7.2 g CO₂/dwt·nm

vs segment average (10.91)

-34% 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
351	GLOBAL ARSENAL IMO 9363302	32,313	2008	177 m	Mitsubishi - 6UEC52LA	7.1	B
352	TIAN EN IMO 9774587	37,124	2017	190 m	Hudong Heavy Machinery - 6RT-flex50	7.1	B
353	PRINCE HADI IMO 9125217	26,412	1997	169 m	5L50MC	7.1	B
354	BALTIC HARMONY IMO 9766657	31,777	2016	166 m	MAN - 6S46ME-B8.2	7.1	B
355	PRINCESS LAYLA IMO 9149677	29,501	1998	181 m	CHINA 5S 50MC	7.1	B
356	AAL PARIS IMO 9594494	33,287	2011	179 m	STX - 6 S 50 MC-C	7.1	B
357	ATLANTIC HARMONY IMO 9613812	31,661	2017	166 m	Doosan - 6S46ME-C	7.1	B
358	CHIPOL CHANGJIANG IMO 9703538	36,475	2015	188 m	MAN - 6S46ME-B8	7.1	B
359	BC VANESSA IMO 9426855	31,755	2010	172 m	Akasaka - 6UEC52LA	7.1	B
360	REGGEBORG IMO 9592575	23,272	2014	170 m	Wärtsilä - 9L32C	7.2	B
361	HARAR IMO 9617399	27,976	2013	166 m	STX - STX-MAN 6S40ME-B9	7.2	B
363	AGIA DOXA IMO 9467976	33,261	2010	179 m	STX - 6 S 50 MC-C	7.2	B
362	MJ MAYA IMO 9261011	31,842	2002	177 m	Mitsubishi - 6UEC52LA	7.2	B
364	CORELLA ARROW IMO 9385477	72,863	2009	225 m	Kawasaki - 6S60ME-C	7.2	B
365	ERKUL S IMO 9177789	13,347	1999	128 m	MAKITA - 6S35MC	7.2	B
367	HAAGA IMO 9797632	25,600	2018	160 m	STX - 5G45ME-C9.5-GI	7.2	B
366	NAZMI C IMO 9577769	37,534	2012	180 m	MAN - 5S50MC-C	7.2	B
368	AL ZAHRAA IMO 9255062	31,770	2002	172 m	Akasaka - 6UEC52LA	7.2	B
369	KAMENARI IMO 9400942	32,326	2010	177 m	Mitsubishi - 6UEC52LA	7.3	B
370	BR MIRAL IMO 9149732	23,923	1997	158 m	Hitachi - 6L42MC	7.3	B
371	INOI IMO 9400928	32,301	2010	177 m	Mitsubishi - 6UEC52LA	7.3	B
372	GRAIN WAY IMO 9545560	23,000	2009	160 m	SHAANXI DIESEL ENGINE HEAVY INDUSTRY CO. LTD. 6S42MC	7.3	B
374	ESRA C IMO 9379662	33,257	2008	176 m	Akasaka - 6UEC52LA	7.3	B
373	ALBATROS I IMO 9540168	25,632	2010	159 m	STX - 8S35MC	7.3	B
375	AVRA.GR IMO 9755866	34,930	2016	180 m	Akasaka - 6UEC45LSE-Eco-B2	7.3	B
376	MANTA MELEK IMO 9536856	33,622	2011	180 m	Mitsubishi - 6UEC45LSE	7.4	B
377	AEGEAN SPIRE IMO 9370381	33,401	2008	180 m	Mitsubishi - 6UEC52LA	7.4	B
378	DELPHINUS IMO 9536428	35,732	2011	180 m	MAN - 5S50MC-C	7.4	B
379	ORCINUS IMO 9467952	34,094	2010	179 m	MAN - 6S50MC-C	7.5	B
380	SERVET ANA IMO 9443774	30,124	2011	179 m	MAKITA - MAKITA-MITSUI-MAN B&W 6S42MC	7.5	B
381	BOKA IMO 9658800	33,382	2013	177 m	Mitsubishi - 6UEC45LSE	7.5	B
382	TRANSNORDIC IMO 9602174	34,827	2012	180 m	MAN - 5S50MC-C	7.5	B
383	TRANSASIA IMO 9600607	26,391	2011	157 m	STX - 7S35MC	7.6	B
385	CAPTAIN CHRISTOS IMO 9589762	38,225	2011	180 m	MAN - 6S46MC-C	7.6	B
384	ROERBORG IMO 9592599	23,272	2014	170 m	MAK/Caterpillar - 9M32C	7.6	B
386	LADY RANIA IMO 9123099	29,538	1996	181 m	DALIAN MARINE - 5S50MC	7.6	B
388	VIIKKI IMO 9797620	25,600	2018	160 m	STX - 5G45ME-C9.5-GI	7.6	B
387	ESSAYRA IMO 9735452	35,084	2016	180 m	STX - 5S50ME-B9	7.6	B
389	ECO WILDFIRE IMO 9652492	33,296	2013	180 m	Mitsubishi - 6UEC45LSE	7.6	B
390	ECO CROSSFIRE IMO 9597654	33,649	2012	180 m	Mitsubishi - 6UEC52LA	7.7	B
391	BC CALLISTO IMO 9400916	32,280	2010	177 m	Mitsubishi - 6UEC52LA	7.7	B
393	AMIRA MARYANA IMO 9379650	32,029	2007	176 m	Mitsubishi - 6UEC52LA	7.7	B
392	NORTH GATE IMO 9363285	32,250	2008	177 m	Mitsubishi - 6UEC52LA	7.7	B
394	DU JUAN SONG IMO 9608805	27,438	2011	180 m	DALIAN MARINE - 6S50ME-C8	7.7	B
395	DA GUI IMO 9768564	28,606	2017	180 m	Hudong Heavy Machinery - 6RT-flex50	7.7	B
396	CARIBBEAN HARMONY IMO 9458468	31,777	2017	166 m	MAN - 6S46ME-B8	7.8	B
397	AMALIA IMO 9973327	14,390	2024	150 m	Wartsila 6L32	7.8	B
400	PNOI IMO 9400887	32,282	2009	177 m	Mitsubishi - 6UEC52LA	7.8	B
399	KEFALONIA IMO 9449780	28,742	2009	170 m	MAKITA - 6S42MC	7.8	B
398	VICTORIA IMO 9336828	50,223	2006	190 m	STX - 6 S 50 MC-C	7.8	B

Page 8 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.