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)

#546 of 3,531 bulk carriers

CO₂ intensity

3.4 g CO₂/dwt·nm

vs segment average (4.87)

-31% 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
504	BEAVER IMO 9746695	81,769	2017	229 m	Mitsui - 6S60ME-C8	3.3	A
501	YILDIZLAR 4 IMO 9502568	49,775	2008	200 m	Mitsubishi - 6UEC50LSII	3.3	A
499	JOLANDA IMO 9724867	180,579	2015	292 m	MAN - 6G70ME-C9	3.3	A
503	GRAND OCEAN IMO 9949651	82,689	2023	229 m	MAN-B&W 7G50ME-C9	3.3	A
502	AM SHRADDHA IMO 9837004	81,754	2019	229 m	MAN - 6S60ME-C8	3.3	A
511	AP DUBROVNIK IMO 9952660	82,249	2023	229 m	MAN - 6S60ME-C10	3.3	A
510	JING LU HAI IMO 9747558	77,927	2015	225 m	MAN - 5S60ME-C8	3.3	A
509	ASTRO SIRIUS IMO 9848077	63,562	2019	200 m	Yichang - 5S60ME-C8	3.3	A
508	TORO IMO 9443009	76,636	2008	225 m	Mitsui - 6S60MC	3.3	A
507	MAIA IMO 9422938	82,193	2009	229 m	MAN - 6S60MC-C	3.3	A
512	LIVORNO IMO 9855549	81,651	2019	229 m	Yichang - 6S60ME-C8	3.3	A
506	BBG HECHI IMO 9929039	82,037	2022	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.3	A
513	ATROTOS HERACLES IMO 9668879	81,922	2014	229 m	MAN - 7S50MC-C	3.3	A
517	SEACON SHANGHAI IMO 9847889	80,811	2019	228 m	MAN - 6S60ME-C8	3.3	A
520	CHASSELAS IMO 9840506	81,758	2019	229 m	Mitsui - 6S60ME-C8	3.3	A
516	PORT OSHIMA IMO 9932804	64,624	2022	200 m	Japan Engine Corp - Akashi 6UEC50LSH-Eco3	3.3	A
523	PISTI IMO 9893503	81,737	2021	229 m	Mitsui - 6S60ME-C8	3.3	A
522	ATHINA II IMO 9724192	82,014	2015	229 m	MAN - 6S60ME-C8.2	3.3	A
521	MONDIAL COSMOS IMO 9801196	81,611	2017	229 m	Hitachi - 6S60ME-C8	3.3	A
515	LOWLANDS FREEDOM IMO 9942158	64,481	2023	200 m	Mitsui E&S Machinery Co., Ltd. Tamano Machinery Factory	3.3	A
519	NEFELI IMO 9317468	77,171	2009	225 m	MAN - 6S60MC-C	3.3	A
514	HAMPTON OCEAN IMO 9798844	80,979	2017	229 m	Mitsui - 6S60ME-C	3.3	A
518	NORD POLARIS IMO 9728198	81,791	2016	229 m	MAN - 6S60ME-C	3.3	A
525	VOLUTINA IMO 9929338	82,408	2022	229 m	Mitsui - 6S60ME-C10	3.4	A
524	KEY FRONTIER IMO 9454292	80,679	2011	224 m	MAN - 7S50MC-C	3.4	A
526	IONIC KIBOU IMO 9582556	81,889	2015	229 m	MAN - 6S60MC-C	3.4	A
530	MARTINE IMO 9411537	86,949	2009	229 m	Wärtsilä - 6RTA58T	3.4	A
529	SPAR MAIA IMO 1015155	63,550	2024	200 m	MAN-B&W 6G50ME-C9	3.4	A
532	KYOTO STAR IMO 9740811	84,956	2016	229 m	MAN - 6S60ME-C8	3.4	A
528	THREE SASKIAS IMO 9689811	81,094	2014	229 m	MAN - 6S60ME-C8.2	3.4	A
531	ARIANA IMO 9828297	81,011	2019	229 m	MAN - 6S60ME-C8	3.4	A
527	BBG GRACE IMO 9702704	81,952	2015	229 m	MAN - 7S50MC-C	3.4	A
537	MSXT THALIA IMO 9929326	85,204	2022	230 m	Hudong Heavy Machinery Co. Ltd. 6S60ME-C10	3.4	A
539	YASA MARS IMO 9848120	61,081	2019	200 m	MAN - 6S50ME-B9	3.4	A
536	STAR MARIA IMO 9401489	82,598	2007	229 m	Mitsui - 7 S 50 MC-C	3.4	A
535	MARINE GLORY IMO 9606754	114,047	2014	250 m	HHI - 7S60MC-C7	3.4	A
534	XING FU HAI IMO 9949302	85,038	2022	227 m	CSIC Diesel Engine Co Ltd 6S60ME-C10-HPSCR	3.4	A
533	DIAMOND POWER IMO 9566590	107,235	2013	255 m	MAN - 6S60MC-C	3.4	A
538	SFERA IMO 9304576	76,801	2006	225 m	MAN - 7S50MC-C	3.4	A
543	DARYA MA IMO 9591674	81,874	2011	229 m	Hyundai - 6S60MC-C8	3.4	A
544	ASTRO VEGA IMO 9720299	63,008	2015	200 m	MAN - 5S60ME-C8	3.4	A
542	ASIAN ETERNITY IMO 9991472	64,683	2024	200 m	MAN-B&W 6S50ME-C9	3.4	A
545	ROYAL PEARL IMO 9941972	63,535	2023	200 m	MAN - 6S50ME-B9.5	3.4	A
541	S SAMBA IMO 9712486	84,867	2015	229 m	Mitsui - 6S60ME-C7.1	3.4	A
540	ANNA-DOROTHEA IMO 9482213	55,646	2008	190 m	Kawasaki - 6S50MC-C-MKVII	3.4	A
550	POMONE IMO 9926130	82,247	2021	229 m	CSSC-MES Diesel Co. Ltd. 6S60ME-C10	3.4	A
549	AMO IMO 9296626	82,214	2006	229 m	MAN - 6S60MC	3.4	A
548	ANGLO JESSICA IMO 9490480	114,664	2006	255 m	MAN - 6S60MC-C	3.4	A
547	AQUAVITA TRUST IMO 9826445	62,625	2019	200 m	Mitsui - 6S50ME-B9	3.4	A
546	AQUAGEMINI IMO 9757010	60,238	2016	198 m	Diesel United - 6RT-flex50	3.4	A

Page 11 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.