Most Emission-Efficient Bulk Carriers

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)

#738 of 3,531 bulk carriers

CO₂ intensity

3.6 g CO₂/dwt·nm

vs segment average (4.87)

-27% 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

3,604

vessels ranked

1.42

greenest (g CO₂/t·nm)

4.65

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
706	ELENA IMO 9336880	82,356	2009	225 m	MAN - 6S60MC	3.5	A
705	EDELWEISS IMO 9928396	81,946	2022	229 m	MAN - 6S50ME-B9	3.5	A
707	RB LEAH IMO 9730830	81,334	2017	229 m	STX - 5G60ME-C9	3.5	A
704	CL CHENZHOU IMO 9953339	64,741	2023	200 m	UnKnown 6S50ME-C9-HPSCR	3.5	A
701	G ATLANTIC IMO 9284910	76,466	2004	225 m	Mitsui - 7 S 50 MC-C	3.5	A
703	KM NAGOYA IMO 9615212	95,349	2012	235 m	MAN - 6S60MC	3.5	A
702	VELOS LIBRA IMO 9710799	77,134	2014	225 m	MAN - 6S60ME-C	3.5	A
708	UNION VOYAGER IMO 9628946	81,964	2014	229 m	MAN - 7S50MC-C	3.5	B
710	GOLDEN JOHN IMO 9955595	84,508	2023	227 m	Dalian Marine Diesel Co Ltd - China 6S60ME-C10-HPSCR	3.5	B
709	IKAN PELATA IMO 9764104	64,071	2018	200 m	Mitsui - 6S50ME-B9	3.5	B
716	SAINT MYRON IMO 9675597	77,116	2014	225 m	MAN - 6S60MC	3.5	B
714	CL DALIAO HE IMO 9880300	80,860	2020	229 m	Doosan - 6S60ME-C8	3.5	B
717	OMISHIMA ISLAND IMO 9642203	61,381	2013	200 m	MAN - 6S50MC-C8	3.5	B
713	ANGLO CYNOSURE IMO 9599133	98,697	2012	240 m	Mitsui - 6S60MC-C	3.5	B
715	CHAO TIAN MEN IMO 9287778	77,671	2004	225 m	Mitsui - MITSUI MAN B&W 6S60MC	3.5	B
712	CEMTEX ORIENT IMO 9599169	98,704	2012	240 m	MAN - 6S60MC-C	3.5	B
711	W-JADE IMO 9673513	75,378	2014	225 m	MAN - 5S60ME-C8	3.5	B
719	ZHENG ZHI IMO 9596090	81,804	2013	229 m	MAN - 5S60ME-C	3.5	B
718	YM OPUS IMO 9518206	81,863	2015	229 m	MAN - 6S60ME-C8.1	3.5	B
720	CMB VAN DIJCK IMO 9883106	63,667	2020	200 m	MAN - 6S50ME-B9	3.5	B
723	BELMOIRA IMO 9873278	61,346	2020	200 m	MAN - 6S50ME-B9	3.5	B
722	ULTRA DIVERSITY IMO 9790854	63,490	2017	200 m	Mitsui - 6S50ME-B9	3.5	B
721	BULK BEQUIA IMO 9683128	61,309	2011	200 m	MAN - 6S50MC-C8	3.5	B
727	TENDRA TRADER IMO 9863821	63,591	2020	200 m	MAN - 6S50ME-C9 (Tier II)	3.5	B
726	TIMORSUN IMO 9728174	81,839	2016	229 m	Mitsui - 6S60ME-C	3.5	B
725	TAI KEENNESS IMO 9884277	82,184	2022	229 m	MAN - 6S60ME-C8	3.5	B
724	KIATING IMO 9893802	37,391	2021	180 m	UnKnown 5S50ME-C8	3.5	B
730	MENARO IMO 9718002	81,061	2016	229 m	MAN - 6S60ME-C8	3.6	B
736	FANTASEA IMO 9342827	76,596	2006	225 m	Mitsui - 6S60MC	3.6	B
729	ELITE STAR IMO 9336581	75,395	2007	225 m	Hitachi - 6S60MC	3.6	B
737	SANTA ACE IMO 9951977	63,725	2022	200 m	MAN - 6S50ME-C9	3.6	B
728	SSI VIGILANT IMO 9918743	63,861	2022	200 m	MAN - 6G50ME-C9	3.6	B
731	XIN XIANG SEA IMO 9954967	64,182	2023	200 m	MAN-B&W 6G50ME-C9	3.6	B
735	PHOENIX IMO 9609160	81,569	2012	229 m	Hudong Heavy Machinery - 5S60MC-C	3.6	B
734	GREEN K-MAX 1 IMO 9838058	80,856	2019	229 m	Hyundai - 6S60ME-C8	3.6	B
733	MEDI ZUOZ IMO 9789910	61,175	2013	200 m	Japan Engine Corporation (J-ENG) 6S50MC-C	3.6	B
732	MARIO IMO 9875006	81,606	2020	229 m	MAN - 6S60ME-C8	3.6	B
750	KIRSTEN OLDENDORFF IMO 9863091	81,285	2020	228 m	Yichang - 6S60ME-C8 (Tier II)	3.6	B
749	LIA M IMO 9525625	84,094	2013	235 m	Hyundai - 7S60MC-C	3.6	B
748	RGL FIRST IMO 9772864	82,215	2017	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.6	B
747	SANTA BRISA IMO 9951771	63,367	2023	200 m	MAN-B&W 6S50ME-B9	3.6	B
746	BRILLIANT VENUS IMO 9326392	106,482	2008	255 m	Kawasaki - 6S60MC	3.6	B
745	PHAR LAP IMO 9590694	179,276	2011	292 m	Hyundai - 6S70MC-CVIII	3.6	B
744	ES LEADER IMO 9781009	64,012	2018	200 m	Mitsui - 6S50ME-B9	3.6	B
743	TUO FU 8 IMO 9649249	81,721	2013	229 m	Wärtsilä - 5RT-flex58T	3.6	B
742	ZANTE IMO 9727168	60,436	2015	200 m	MAN - 6S50MC-C	3.6	B
741	PROGRESS TRADER IMO 9936769	82,221	2022	229 m	Yichang - 6S60ME-C8	3.6	B
740	WECO ESTHER IMO 9951654	64,215	2022	200 m	Hudong Heavy Machinery Co Ltd - China 6S50ME-C9-HPSCR	3.6	B
739	SANTA GRACIELA IMO 9518103	82,149	2013	229 m	MAN - 6S60MC-C	3.6	B
738	MOREA IMO 9699880	63,280	2015	200 m	MAN - 5S60ME-C8 Tier II	3.6	B

Page 15 of 71 — 3,531 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.