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)

#691 of 3,436 bulk carriers

CO₂ intensity

3.5 g CO₂/dwt·nm

vs segment average (4.71)

-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

3,507

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
650	NING MAY IMO 9891866	85,206	2021	230 m	MAN - 6S60ME-C10	3.4	A
654	ROSTRUM STOIC IMO 9955911	82,175	2023	229 m	MAN - 6S60ME-C10	3.4	A
656	HARVEST FROST IMO 9643879	95,263	2014	237 m	Mitsubishi - 6UEC60LSE-Eco-A2	3.4	A
653	MOUDROS IMO 9952414	82,177	2022	229 m	MAN - 6G50ME-C9	3.4	A
657	ZURICH IMO 9668893	81,922	2014	229 m	MAN - 7S50MC-C	3.4	A
652	HONG DAI IMO 9563603	76,556	2010	225 m	Hudong Heavy Machinery - 5S60MC	3.4	A
655	SAKIZAYA ELEGANCE IMO 9713806	81,938	2015	229 m	MAN - 6S60ME-C8	3.4	A
660	STAR AQUARIUS IMO 9715828	60,916	2015	198 m	MAN - 6S50ME-B9	3.4	A
659	THEODORE VENIAMIS IMO 1036032	63,709	2025	200 m	Kanadevia Corporation	3.4	A
661	PUMA MAX IMO 9589152	81,339	2012	229 m	Hyundai - 7S50MC-C8	3.4	A
658	AMARYLLIS IMO 9840491	81,758	2019	229 m	Mitsui - 6S60ME-C8	3.4	A
664	GOLDEN ISLAND IMO 9964869	63,604	2024	200 m	MAN-B&W 6S50ME-C9	3.4	A
663	DORIC SHOGUN IMO 9775177	63,347	2014	200 m	Hitachi - 6S50MC-C-8	3.4	A
662	SSI DIGNITY IMO 9665360	81,221	2014	229 m	MAN - 6S60MC-C	3.4	A
666	ETG UBUNTU IMO 9952907	64,195	2022	200 m	Hudong Heavy Machinery Co Ltd - China 6S50ME-C9-HPSCR	3.4	A
665	MSXT THALIA IMO 9929326	85,204	2022	230 m	Hudong Heavy Machinery Co. Ltd. 6S60ME-C10	3.4	A
667	SEACHAMPION IMO 9936939	82,032	2022	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.4	A
668	PUPLINGE IMO 9782156	81,672	2016	229 m	Hitachi - 6S60MC-C	3.4	A
671	ECHO.GR IMO 9673836	81,070	2014	229 m	Wärtsilä - 6RT-flex58T	3.4	A
670	SOCRATES GRAECIA IMO 9843754	82,057	2020	229 m	DALIAN MARINE - 6S60ME-C8	3.4	A
669	CEPHEUS OCEAN IMO 9686273	83,000	2013	229 m	Mitsui - 6S60ME-C8.2	3.4	A
674	ARIANA IMO 9828297	81,011	2019	229 m	MAN - 6S60ME-C8	3.4	A
673	BELLEVUE IMO 9431185	119,346	2011	245 m	MAN - 6S60MC-C	3.4	A
675	GRAECIA AETERNA IMO 9689835	81,001	2014	229 m	Mitsui - 6S60ME-C	3.4	A
672	BEAGLE IMO 9731195	81,920	2016	229 m	CSSC - 6S60ME-C8	3.4	A
680	AMIS YOUTH IMO 9979242	63,720	2024	200 m	MAN-B&W 6S50ME-C9	3.4	A
677	MEDI SERAPO IMO 9811531	87,091	2018	228 m	Mitsui - 6S60ME-C8	3.4	A
676	ANAFI IMO 9978602	63,629	2024	200 m	MAN-B&W 6G50ME-C9	3.4	A
679	CL YANGZHOU IMO 9703265	81,061	2019	229 m	Doosan - 6S60ME-C8	3.4	A
678	NORDIC OASIS IMO 9727120	75,800	2016	225 m	MAN - 5S60MC-C	3.4	A
681	AMIS XCEL IMO 9983774	63,739	2024	200 m	MAN-B&W 6S50ME-C10	3.5	A
684	MALENA IMO 9852822	81,575	2019	229 m	MAN - 6S60ME-C8	3.5	A
688	JIN ZHU HAI IMO 9494383	76,449	2009	225 m	Hudong Heavy Machinery - 6 S 60 MC	3.5	A
683	ULTRA PASSION IMO 9811907	63,472	2017	200 m	Mitsui - 6S50MC-B9	3.5	A
690	GLYFADA I IMO 9473145	75,639	2009	225 m	Hudong Heavy Machinery - 5S60MC	3.5	A
689	PEAK RAINIER IMO 9710139	81,070	2015	229 m	MAN - 6S60ME-C	3.5	A
682	JY LONDON IMO 9867176	81,118	2020	226 m	MAN - 6S60ME-C8	3.5	A
687	RG CERES IMO 9310288	83,001	2006	229 m	MAN - 7S50MC-C	3.5	A
686	SDM QUANZHOU IMO 9949259	64,309	2023	210 m	MAN-B&W 6G50ME-C9	3.5	A
685	FAIR LADY IMO 9342877	76,608	2002	225 m	Hitachi - HITACHI ZOSEN- MAN B&W 6S60MC-MK6	3.5	A
697	KATAGALAN WISDOM IMO 9599121	98,697	2012	240 m	MAN - 6S60MC-C	3.5	B
699	PRISCILLA IMO 9880221	82,543	2020	229 m	MAN - 6S60ME-C10	3.5	B
698	EMERALD DAISHAN IMO 9981295	85,515	2023	229 m	MAN-B&W 6S60ME-C10	3.5	B
696	KOULITSA 2 IMO 9639684	78,129	2013	225 m	Mitsui - 6S60MC-C	3.5	B
695	LOWLANDS FIDELITY IMO 9966087	64,028	2023	200 m	MAN - 6S50ME-C9	3.5	B
694	IOANNA FORCE IMO 9796561	80,982	2017	229 m	Mitsui - 6S60ME-C8	3.5	B
693	RB LEAH IMO 9730830	81,334	2017	229 m	STX - 5G60ME-C9	3.5	B
692	FARAH LOUISE IMO 9785603	81,886	2017	229 m	Mitsui - 6S60ME-C8	3.5	B
691	PEAK HAKU IMO 9888467	82,514	2021	229 m	MAN - 6S60ME-C10	3.5	B
700	AQUAPISCES IMO 9757022	60,238	2016	198 m	Diesel United - 6RT-flex50	3.5	B

Page 14 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.