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)

#645 of 3,436 bulk carriers

CO₂ intensity

3.4 g CO₂/dwt·nm

vs segment average (4.71)

-28% 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
608	STARDOM WAVE IMO 9767467	88,783	2017	230 m	MAN - 6S60MC	3.4	A
600	GLBS ANGEL IMO 9728629	81,600	2016	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.4	A
609	NSC BINGO IMO 1036501	64,090	2025	200 m	MAN-B&W 6S50ME-C9	3.4	A
599	GU PRIDE IMO 9477220	107,290	2011	255 m	Mitsubishi - 6S60MC-C	3.4	A
607	AFRICAN ICEBIRD IMO 9728203	81,791	2016	229 m	Mitsui - 6S60ME-C	3.4	A
606	NAVIOS MERIDIAN IMO 9947237	82,010	2021	229 m	MAN - 6S60ME-C8	3.4	A
605	ASTRO NEKKAR IMO 9720304	63,008	2016	200 m	MAN - 5S60ME-C8	3.4	A
604	BULLDOG IMO 9728136	81,845	2016	229 m	MAN - 6S60ME-C	3.4	A
603	SCARLET ROSELLA IMO 9609627	82,235	2015	229 m	MAN - 6S60MC	3.4	A
611	FANEROMENI IMO 9343857	92,484	2007	230 m	MAN - 7S50MC-C	3.4	A
610	KATY OLDENDORFF IMO 1021740	69,997	2023	229 m	MAN-B&W 6G50ME-C9	3.4	A
612	MEGEVE IMO 9746700	81,712	2017	229 m	Mitsui - 6S60ME-C8	3.4	A
615	HAMPTON OCEAN IMO 9798844	80,979	2017	229 m	Mitsui - 6S60ME-C	3.4	A
614	CSSC AMSTERDAM IMO 9853890	120,565	2020	255 m	MAN - 6G60ME-C9	3.4	A
613	ZEPHYROS IMO 9764025	81,805	2016	229 m	Mitsui - 6S60MC-C	3.4	A
617	SAKIZAYA CHAMPION IMO 9680360	78,080	2014	225 m	Mitsui - 6S60ME-C8.2	3.4	A
619	CHASSELAS IMO 9840506	81,758	2019	229 m	Mitsui - 6S60ME-C8	3.4	A
616	AMOY DREAM IMO 9801706	63,878	2017	200 m	Mitsui - 6S50ME-B9	3.4	A
624	ABILITY IMO 9908281	64,253	2021	200 m	MAN - 6S50ME-C9	3.4	A
620	NAVIOS DOLPHIN IMO 9782168	81,630	2017	229 m	Mitsui - 6S60ME-C8	3.4	A
618	YASA URANUS IMO 9964106	64,058	2023	200 m	MAN-B&W 6S50ME-C9	3.4	A
623	OMICRON ATLAS IMO 9464510	76,554	2008	225 m	MAN - 6S60MC	3.4	A
622	MONDIAL SUN IMO 9859296	82,035	2019	229 m	Mitsui - 6S60ME-C8.5	3.4	A
621	ALPHA LEGACY IMO 9671838	82,047	2018	229 m	DALIAN MARINE - 6S60MC-C8	3.4	A
629	SEAMELODY IMO 9785964	82,031	2019	229 m	MAN - 6S60ME-C8	3.4	A
628	STAR STAMFORD IMO 9735127	61,530	2016	200 m	MAN - 6S50ME-B9	3.4	A
630	MADOROSU IMO 1024522	63,694	2024	200 m	HITACHI ZOSEN CORPORATION ARIAKE WORKS	3.4	A
627	VALIANT SAPPHIRE IMO 9969716	63,646	2023	200 m	STX Heavy Industries Co Ltd - Changwon 6G50ME-C9-HPSCR	3.4	A
634	VITA FUTURE IMO 9697870	81,938	2015	229 m	MAN - 6S60ME-C8	3.4	A
633	PEDHOULAS COMMANDER IMO 9381524	83,684	2008	229 m	Mitsui - 6S60MC-C	3.4	A
632	OCEAN VENUS IMO 9442380	83,416	2010	229 m	Kawasaki - 6S60MC-C	3.4	A
626	DEFENDER IMO 9949663	82,680	2023	229 m	MAN-B&W 7G50ME-C9	3.4	A
631	JOLLY DANUBE IMO 9471240	80,505	2010	229 m	MAN - 7S50MC-C	3.4	A
625	COSMAR IMO 9710593	82,025	2016	229 m	Hudong Heavy Machinery - 6S60ME-C8.2 (Tier II)	3.4	A
640	CHAILEASE BLOSSOM IMO 9622540	82,146	2013	229 m	Mitsui - 6S60MC-C	3.4	A
636	FIRST MARGAUX IMO 9933250	82,276	2023	229 m	CSSC-MES Diesel Co. Ltd. 6S60ME-C10	3.4	A
635	BETTY K IMO 9855654	81,992	2019	229 m	DALIAN MARINE - 6S60ME-C8 (Tier II)	3.4	A
644	STAR ATLAS IMO 9828302	81,136	2021	229 m	MAN - 6S60ME-C8	3.4	A
643	AMOY SUNNY IMO 9342841	76,598	2006	225 m	MAN - 6S60MC	3.4	A
642	GOLDEN FRIGO IMO 9955571	85,000	2024	227 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 6S60ME-C10-HPSCR	3.4	A
641	KLEO OLDENDORFF IMO 9969792	82,106	2025	229 m	MAN - 6G50ME-C9	3.4	A
639	PHENOMENAL DIVA IMO 9902263	82,533	2021	229 m	MAN - 6S60ME-C10	3.4	A
638	SEACON OSLO IMO 9980435	85,506	2023	229 m	MAN-B&W 6S60ME-C10	3.4	A
637	MORNING CLOUD IMO 9532197	74,962	2011	225 m	Mitsui - MITSUI-MAN B&W 7S50MC-C7	3.4	A
650	NING MAY IMO 9891866	85,206	2021	230 m	MAN - 6S60ME-C10	3.4	A
649	TRITON CENTURY IMO 9805702	82,079	2018	229 m	MAN - 6S60ME-C8	3.4	A
648	SSI EXCELLENT IMO 9693757	81,119	2016	229 m	MAN - 6S60ME-C	3.4	A
647	SAKIZAYA LEADER IMO 9758739	81,691	2017	229 m	Mitsui - 6S60ME-C8.2	3.4	A
646	ULTRA ENDURANCE IMO 1024479	63,719	2025	200 m	HITACHI ZOSEN CORPORATION ARIAKE WORKS	3.4	A
645	NAUTICAL DREAM IMO 9950894	82,281	2023	229 m	MAN - 6S60ME-C10	3.4	A

Page 13 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.