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)

#368 of 2,380 general cargos

CO₂ intensity

6.7 g CO₂/dwt·nm

vs segment average (13.96)

-52% 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
351	BC VANESSA IMO 9426855	31,755	2010	172 m	Akasaka - 6UEC52LA	6.6	A
352	RADIUS IMO 9526710	36,976	2012	178 m	Akasaka - 6UEC52LA	6.6	A
353	ROERBORG IMO 9592599	23,272	2014	170 m	MAK/Caterpillar - 9M32C	6.6	A
354	CHRYSOULA S IMO 9713404	37,786	2015	180 m	MAN - 6S46MC-C	6.6	A
355	INCHON TRADER IMO 9161211	20,501	1998	153 m	Mitsubishi - 6UEC50LS	6.7	A
356	MOON GATE IMO 9400904	32,292	2009	177 m	Mitsubishi - 6UEC52LA	6.7	A
357	HANA H IMO 9143855	7,600	1998	114 m	MAN - 8L40/45	6.7	A
358	TIAN QI IMO 9722742	37,940	2016	190 m	Hudong Heavy Machinery - 6RT-flex50-B	6.7	A
359	ECO CROSSFIRE IMO 9597654	33,649	2012	180 m	Mitsubishi - 6UEC52LA	6.7	A
363	EMERALD BAY IMO 9385075	32,258	2008	177 m	Mitsubishi - 6UEC52LA	6.7	A
362	MANTA SENA IMO 9338137	32,354	2006	177 m	Mitsubishi - 6UEC52LA	6.7	A
361	PEARL IVY IMO 9580015	31,848	2013	176 m	Mitsubishi - 6UEC45LSE	6.7	A
360	MSC CALEDONIA II IMO 9262546	35,079	2002	188 m	Sulzer - 6RTA48T-B	6.7	A
364	CASPIAN HARMONY IMO 9766645	31,671	2016	166 m	MAN - 6S46ME-B8.2	6.7	A
365	LADY ZEHMA IMO 9303431	32,328	2005	173 m	Hitachi - 6S46MC-C	6.7	A
366	V PEGASUS IMO 9370422	33,248	2008	180 m	Mitsubishi - 6UEC52LA	6.7	A
367	TIAN FU IMO 9704738	38,146	2015	190 m	Wärtsilä - 6RT-flex50	6.7	A
368	BR MIRAL IMO 9149732	23,923	1997	158 m	Hitachi - 6L42MC	6.8	A
369	PAPUA IMO 9266906	31,817	2003	177 m	Mitsubishi - 6UEC52LA	6.8	A
370	MANTA ZUHAL IMO 9374351	37,313	2008	178 m	Akasaka - 6UEC52LA	6.8	A
371	KEFALONIA IMO 9449780	28,742	2009	170 m	MAKITA - 6S42MC	6.8	A
373	SIDER TRADER IMO 9427574	26,365	2011	157 m	MAKITA - 8S42MC-MKVII	6.8	A
372	AAL LIMASSOL IMO 9958755	32,517	2024	180 m	MAN-B&W 6S50ME-C9	6.8	A
374	BOKA IMO 9658800	33,382	2013	177 m	Mitsubishi - 6UEC45LSE	6.8	A
375	PRIME STAR IMO 9612284	36,570	2012	178 m	MAKITA - 6S46MC-C8	6.8	A
376	BOSPHORUS S IMO 9400887	32,282	2009	177 m	Mitsubishi - 6UEC52LA	6.8	A
378	MUROVDAG IMO 9791042	37,155	2020	180 m	MAN - 6S46ME-B8	6.8	A
377	CARIBBEAN HARMONY IMO 9458468	31,777	2017	166 m	MAN - 6S46ME-B8	6.8	A
380	NEPTULUS IMO 9473705	33,706	2012	180 m	Mitsubishi - 6UEC45LSE	6.8	A
379	BC ZOE IMO 9711901	33,443	2014	177 m	Mitsubishi - 6UEC45LSE	6.8	A
381	YASSIN BEY IMO 9220988	31,921	2000	172 m	Mitsubishi - 6UEC52LA	6.8	A
382	TIAN LU IMO 9704740	38,122	2015	190 m	DALIAN MARINE - 6RT-flex50-B	6.9	A
383	POLLUX IMO 9379648	32,017	2007	176 m	Mitsubishi - 6UEC52LA	6.9	A
384	TRANSMERIDIAN IMO 9577757	35,853	2011	180 m	MAN - 5S50MC-C	6.9	A
386	HG ROTTERDAM IMO 9598921	37,873	2019	182 m	Mitsubishi - 6UEC50LSII	6.9	A
385	TIAN ZHEN IMO 9722728	38,006	2016	190 m	Hudong Heavy Machinery - 6RT-flex50-B	6.9	A
387	INDIANA IMO 9186211	44,982	2000	198 m	6S60MC	6.9	A
388	FERASET IMO 9747651	26,354	2015	157 m	MAN - 6S42MC	6.9	A
390	VIIKKI IMO 9797620	25,600	2018	160 m	STX - 5G45ME-C9.5-GI	6.9	A
389	TIAN HUI IMO 9774599	37,129	2017	190 m	Hudong Heavy Machinery - 6RT-flex50	6.9	A
391	LUCKY FINDER IMO 9393620	37,268	2009	178 m	Akasaka - 6UEC52LA	6.9	A
392	AAL PARIS IMO 9594494	33,287	2011	179 m	STX - 6 S 50 MC-C	6.9	A
393	TIAN EN IMO 9774587	37,124	2017	190 m	Hudong Heavy Machinery - 6RT-flex50	6.9	A
394	ISOLDANA IMO 9186235	44,691	2000	198 m	6S60MC	7.0	A
395	ECO WILDFIRE IMO 9652492	33,296	2013	180 m	Mitsubishi - 6UEC45LSE	7.0	A
396	ATLANTIC HARMONY IMO 9613812	31,661	2017	166 m	Doosan - 6S46ME-C	7.0	A
397	TEAL BAY IMO 9343637	32,327	2007	177 m	Mitsubishi - 6UEC52LA	7.0	A
400	GULLHOLMEN ISLAND IMO 9605085	38,309	2011	180 m	MAN - 6S46MC-C	7.0	A
399	MADDOX IMO 9277486	32,354	2005	177 m	Mitsubishi - 6UEC52LA	7.0	A
398	TIAN YOU IMO 9823625	37,077	2018	190 m	Hudong Heavy Machinery - 6RT-flex50	7.0	A

Page 8 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.