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)

#427 of 3,436 bulk carriers

CO₂ intensity

3.2 g CO₂/dwt·nm

vs segment average (4.71)

-33% 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
402	STAR LYDIA IMO 9673795	81,187	2013	229 m	Diesel United - 6RT-flex58T	3.1	A
404	ATTALIA IMO 9423360	82,171	2006	229 m	Mitsui - 6S60MC-C	3.1	A
401	XH SQUARE LEG IMO 1019852	83,055	2024	229 m	MAN-B&W 6S50ME-C9	3.1	A
400	MEDI AMALFI IMO 9781982	87,605	2017	228 m	Kawasaki - 6S60ME-C8.2	3.1	A
405	YM COURAGE IMO 9959943	81,980	2023	229 m	Mitsui E&S DU Co Ltd 6X52	3.1	A
406	ROSTRUM HEDONIST IMO 9955894	82,178	2023	229 m	MAN - 6S60ME-C10	3.1	A
407	CANARIAS IMO 1067017	82,221	2025	229 m	MAN-B&W 6G50ME-C9	3.1	A
409	INTERCEPTOR IMO 9835965	82,009	2019	229 m	DALIAN MARINE - 6S60ME-C8	3.1	A
416	GH HELM IMO 9438781	180,018	2009	292 m	Doosan - 6S70MC-C	3.1	A
408	SAFEEN AL AMAN IMO 9490129	83,027	2012	229 m	MAN - 6S60MC-C	3.1	A
417	DONATELLO IMO 1030818	82,000	2025	229 m	MAN-B&W 6G50ME-C9	3.1	A
410	LOWLANDS PATRASCHE IMO 9979137	63,458	2024	200 m	MAN-B&W 6S50ME-C9	3.1	A
415	ALPHA PRIDE IMO 9827528	82,032	2019	229 m	DALIAN MARINE - 6S60ME-C8 (Tier II)	3.1	A
414	BASTIONS IMO 9431173	119,376	2011	245 m	MAN - 6S60MC-C	3.1	A
413	EVER EXCELLENT IMO 9899806	81,935	2021	229 m	MAN - 6S60ME-C8	3.1	A
412	BTG MISTI IMO 9952488	82,235	2023	229 m	MAN - 6G50ME-C9	3.1	A
411	BBG GUIJIANG IMO 9971939	82,799	2024	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.1	A
421	TEKUNG BENEFIT IMO 9984168	63,553	2024	200 m	MAN-B&W 6S50ME-C9	3.2	A
420	FOXTON IMO 9966582	90,029	2024	229 m	Hudong Heavy Machinery Co Ltd - China 5G60ME-C10	3.2	A
422	IRINA IMO 9723655	81,600	2016	229 m	MAN - 6S60ME-C8	3.2	A
419	OLIVIA C IMO 9710555	81,800	2015	229 m	MAN - 6S60ME-C8	3.2	A
426	JAG AKSHAY IMO 9706554	82,044	2016	229 m	MAN - 6S60ME-C8	3.2	A
425	ORANGE HARMONY IMO 9764099	81,739	2017	229 m	CSSC - 6S60MC-C	3.2	A
424	OWUSU MARU IMO 9888479	82,506	2020	229 m	MAN - 6S60ME-C10	3.2	A
418	BULK FINLAND IMO 9691577	77,126	2010	225 m	MAN - 6S60MC	3.2	A
423	AMAZING SALUTE IMO 9477232	107,288	2011	255 m	MAN - 6S60MC-C	3.2	A
427	JAG AJAY IMO 9723849	82,000	2016	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.2	A
430	EMERALD PUTUO IMO 9936240	85,611	2022	229 m	MAN - 6S60ME-C10	3.2	A
433	JOSCO SHENGZHOU IMO 9934175	64,250	2022	200 m	MAN - 6S50ME-C9	3.2	A
429	NAVIOS BUENA VENTURA IMO 9481233	179,108	2006	292 m	HHI - 6S70MC-C7	3.2	A
435	BORA IMO 9607112	82,000	2014	229 m	Doosan - 5S60MC-C	3.2	A
434	SKIATHOS IMO 9952476	82,219	2023	229 m	MAN - 6G50ME-C9	3.2	A
428	PRT KAHO IMO 9701152	77,113	2014	225 m	MAN - 6S60MC	3.2	A
431	XIN HAI TONG 811 IMO 9639567	81,504	2013	229 m	Mitsubishi - MITSUBISHI 6UEC50LSE	3.2	A
432	MAGMA TENACITY IMO 9967689	63,709	2023	196 m	STX Engine Co. Ltd. 6G50ME-C9-HPSCR	3.2	A
437	NORD KARAS IMO 9552991	82,354	2016	229 m	MAN - 6S60MC-C	3.2	A
439	ATLANTIC BONANZA IMO 9952505	82,143	2024	229 m	MAN - 6G50ME-C9	3.2	A
436	CYMONA PRIDE IMO 9694488	78,056	2014	225 m	Mitsui - 6S60ME-C8.2	3.2	A
441	CHAMPIONSHIP IMO 9403516	180,000	2011	292 m	MAN - 6S70MC-C	3.2	A
440	SPIKE IMO 9976628	64,046	2024	200 m	MAN-B&W 6S50ME-C9	3.2	A
438	WOOYANG IVY IMO 9782326	63,590	2017	200 m	Hitachi - 6S50ME-B9	3.2	A
450	ATHINA ZAFIRAKIS IMO 9801201	81,630	2017	229 m	Mitsui - 6S60ME-C8	3.2	A
449	FJ CAMELIA IMO 9911769	82,501	2021	229 m	Mitsui - 6S60ME-C8	3.2	A
448	ULTRA LEOPARD IMO 9758428	81,777	2016	229 m	Mitsui - 6S60ME-C8	3.2	A
447	PAN CONCORD IMO 9966855	82,814	2024	229 m	MAN - 6S60ME-C10	3.2	A
446	XING FU HAI IMO 9949302	85,038	2022	227 m	CSIC Diesel Engine Co Ltd 6S60ME-C10-HPSCR	3.2	A
445	GOLDEN FRIDGE IMO 9955595	84,508	2023	227 m	Dalian Marine Diesel Co Ltd - China 6S60ME-C10-HPSCR	3.2	A
444	NAVIOS LIBRA IMO 9852925	82,011	2019	229 m	MAN - 6S60ME-C8	3.2	A
443	NORD ANDROMEDA IMO 9929390	82,251	2022	229 m	CSSC-MES Diesel Co. Ltd. 6S60ME-C10	3.2	A
442	KARPATY IMO 9582506	82,138	2013	229 m	MAN - 6S60MC-C	3.2	A

Page 9 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.