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 2025. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2025)

#915 of 3,436 bulk carriers

CO₂ intensity

3.7 g CO₂/dwt·nm

vs segment average (4.71)

-22% 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

3,507

vessels ranked

1.74

greenest (g CO₂/t·nm)

4.46

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
903	PATMOS IMO 9967653	63,631	2024	200 m	STX Heavy Industries Co Ltd - Changwon 6G50ME-C9-HPSCR	3.7	B
912	EMERALD BAISHA IMO 9726530	81,651	2015	229 m	MAN - 6S60ME-C8	3.7	B
902	PAN REGINA IMO 9875666	63,243	2020	200 m	MAN - 6G50ME-C9	3.7	B
914	BELGRACE IMO 1024455	63,718	2024	200 m	HITACHI ZOSEN CORPORATION ARIAKE WORKS	3.7	B
913	EMERALD QUSHAN IMO 9991537	63,824	2024	200 m	MAN-B&W 6G50ME-C9	3.7	B
901	GCL PARADIP IMO 9921855	82,324	2021	229 m	MAN - 6S60ME-C10	3.7	B
911	OMICRON EAGLE IMO 9375927	81,426	2009	225 m	MAN - 7S50MC-C	3.7	B
910	DORIC TRIDENT IMO 9728150	57,859	2016	190 m	MAN - 6S50MC-C	3.7	B
909	STAR SKY IMO 9399105	81,466	2010	225 m	MAN - 7S50MC-C	3.7	B
908	SARITA IMO 9836361	63,988	2019	196 m	MAN - 6S50ME-B9.3	3.7	B
907	ULTRA SERVAL IMO 9874997	81,606	2020	229 m	Mitsui - 6S60ME-C8	3.7	B
906	OINOUSSIAN VIGOUR IMO 9523263	82,167	2010	229 m	Mitsui - 6S60MC-C	3.7	B
905	ODYSSEAS L IMO 9597381	81,259	2013	229 m	MAN - 6S70MC-C	3.7	B
904	BELNIPPON IMO 9801249	63,602	2018	200 m	Mitsui - 6S50MC-B9	3.7	B
919	BLUE SPIRIT IMO 9471252	80,502	2010	229 m	MAN - 7S50MC-C	3.7	B
921	ALANA IMO 9311220	82,936	2005	229 m	MAN - 7S50MC-C	3.7	B
918	FORTUNE PROSPERITY IMO 9303510	77,747	2005	225 m	Mitsui - 6S60MC	3.7	B
923	BULK CROATIA IMO 9875020	81,621	2020	229 m	MAN - 6S60ME-C8	3.7	B
922	SDTR ALICE IMO 9877834	84,972	2021	227 m	MAN - 6S60ME-C8	3.7	B
917	VITAKOSMOS IMO 9583225	82,177	2012	229 m	MAN - 7S50MC-C	3.7	B
916	TOMINI PROSPERITY IMO 9718181	63,503	2018	200 m	Yichang - 5S60ME-C8	3.7	B
915	BLOCK ISLAND IMO 9614969	61,442	2012	200 m	MAN - 6S50MC-C8	3.7	B
920	PHILIPPOS IMO 9839820	61,536	2019	200 m	Hudong Heavy Machinery - 6S50ME-B9	3.7	B
924	MSXT HELEN IMO 9929314	85,295	2022	230 m	Hudong Heavy Machinery Co. Ltd. 6S60ME-C10-HPSCR	3.7	B
927	FORTUNE SUN IMO 9267211	74,193	2002	225 m	Hitachi - 7S50MC-MKVI	3.7	B
929	GALATEIA IMO 9715438	81,886	2016	229 m	MAN - 6S60ME-C8	3.7	B
926	VAN LEOPARD IMO 9692674	60,263	2015	198 m	MAN - 6S50MC-C	3.7	B
930	POLYDEFKIS IMO 9843417	80,996	2020	229 m	Doosan - 6S60ME-C8 (Tier II)	3.7	B
925	OURANIA DREAM IMO 9310642	83,002	2006	229 m	Mitsui - 7 S 50 MC-C	3.7	B
928	FEDERAL IMABARI IMO 9774331	63,449	2016	200 m	Hitachi - 6S50MC-B9	3.7	B
945	SSI SURPRISE IMO 9603142	81,631	2013	229 m	MAN - 5S60ME-C	3.7	B
948	LEM GERANIUM IMO 9845790	64,712	2015	200 m	MAN - 7G50ME-C9	3.7	B
944	GEORG OLDENDORFF IMO 9702596	80,866	2015	229 m	MAN - 6S60ME-C8	3.7	B
947	GENCO COLUMBIA IMO 9758129	60,294	2016	200 m	Kawasaki - 6S50ME-B9	3.7	B
946	AEOLIAN ARROW IMO 9671814	82,053	2018	229 m	MAN - 6S60ME-C8	3.7	B
935	GLBS MAGIC IMO 9972816	64,195	2024	200 m	MAN - 6S50ME-C9	3.7	B
934	EASTERN VENTURE IMO 9978743	64,696	2023	200 m	MAN-B&W 6S50ME-C9	3.7	B
943	MAKEDONIKOS IMO 9884605	61,087	2020	200 m	MAN - 6S50ME-B9	3.7	B
942	ATALANTI.GR IMO 9849784	60,394	2019	200 m	MAN - 6S50ME-B9	3.7	B
941	KENDRA OLDENDORFF IMO 9849813	81,122	2019	228 m	Yichang - 6S60ME-C8	3.7	B
940	CL DALIAO HE IMO 9880300	80,860	2020	229 m	Doosan - 6S60ME-C8	3.7	B
939	ERENA IMO 9433664	83,468	2011	229 m	Mitsui - 6S60MC-C	3.7	B
938	ORIENT CAVALIER IMO 9436460	114,751	2010	255 m	MAN - 6S60MC-C	3.7	B
937	STAR ANTARES IMO 9712694	61,258	2015	200 m	MAN - 6S50ME-B9	3.7	B
936	JAG AMAR IMO 9723851	82,083	2017	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.7	B
933	ETRON IMO 9718038	81,080	2016	229 m	Yichang - 6S60ME-C8	3.7	B
932	ESNA IMO 9139268	71,598	1998	224 m	6S60MC	3.7	B
931	AMSTEL TIGER IMO 9434515	60,454	2016	200 m	MAN - 6S50ME-B9	3.7	B
950	AI STRATIS IMO 9952426	82,176	2023	229 m	MAN - 6G50ME-C9	3.7	B
949	KIRSTEN OLDENDORFF IMO 9863091	81,285	2020	228 m	Yichang - 6S60ME-C8 (Tier II)	3.7	B

Page 19 of 69 — 3,436 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.