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)

#375 of 3,531 bulk carriers

CO₂ intensity

3.2 g CO₂/dwt·nm

vs segment average (4.87)

-35% 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
351	OUTLANDER IMO 9218337	45,526	2000	186 m	Mitsui - 6S50MC	3.1	A
350	CSSC AMSTERDAM IMO 9853890	120,565	2020	255 m	MAN - 6G60ME-C9	3.1	A
349	CIARA MARU IMO 9932098	82,626	2022	229 m	MAN - 6S60ME-C10	3.1	A
354	AOM ELENA IMO 9970246	82,550	2024	229 m	MAN-B&W 6S60ME-C10	3.1	A
357	SAKIZAYA QUEEN IMO 9783148	81,858	2018	229 m	Mitsui - 6S60ME-C8	3.1	A
356	MEDI ARGENTARIO IMO 9771298	89,499	2018	235 m	Mitsui - 6S60ME-C8.2	3.1	A
355	HSL TAMPA IMO 9781035	81,818	2017	229 m	Mitsui - 6S60ME-C8	3.1	A
358	NAVIOS ALEGRIA IMO 9757785	84,852	2016	229 m	Mitsui - 6S60ME-C	3.1	A
359	PREGNY IMO 9925746	82,628	2022	229 m	MAN - 7G50ME-C9	3.1	A
364	PINCHAT IMO 9758466	81,828	2018	229 m	Mitsui - 6S60ME-C	3.1	A
363	SM SAMCHEONPO IMO 9842487	80,943	2019	229 m	MAN - 6S60ME-C	3.1	A
362	EMERALD PUTUO IMO 9936240	85,611	2022	229 m	MAN - 6S60ME-C10	3.1	A
361	KARPATY IMO 9582506	82,138	2013	229 m	MAN - 6S60MC-C	3.1	A
360	MEDI PALMAROLA IMO 9802205	81,874	2018	229 m	Mitsui - 6S60ME-C8	3.1	A
366	THALASSINI AVRA IMO 9500704	180,643	2011	292 m	MAN - 7S65ME-C	3.1	A
365	KMAX RULER IMO 9436642	91,800	2009	230 m	STX - 7 S 50 MC-C	3.1	A
369	CORNALIN IMO 9947263	82,403	2023	229 m	Mitsui Engineering & Shipbuilding C Ltd - Japan 6S60ME-C10-EGRBP	3.1	A
372	ALBATROSS IMO 9937256	82,411	2023	229 m	Mitsui Engineering & Shipbuilding C Ltd - Japan 6S60ME-C10-EGRBP	3.1	A
368	MEDI EOLIE IMO 9728186	81,845	2016	229 m	MAN - 6S60ME-C	3.1	A
371	URSULA MANX IMO 9900095	82,561	2021	229 m	MAN - 6S60ME-C10	3.1	A
367	MORNING CLOUD IMO 9532197	74,962	2011	225 m	Mitsui - MITSUI-MAN B&W 7S50MC-C7	3.1	A
370	ALBA IMO 9493755	175,232	2012	292 m	MAN - 6S70MC	3.1	A
373	CHARM LOONG IMO 9464390	76,636	2008	225 m	Mitsui - 6S60MC	3.2	A
374	ENERGY GLORY IMO 9518074	82,123	2013	229 m	MAN - 6S60MC-C	3.2	A
375	LOWLANDS SKY IMO 9933262	82,281	2023	229 m	CSSC-MES Diesel Co. Ltd. 6S60ME-C10	3.2	A
387	LEMAN TRADER IMO 9846093	82,192	2019	229 m	MAN - 6S60MC-C8	3.2	A
386	LOWLANDS IYO IMO 9987249	82,019	2024	229 m	WinGD 6X52	3.2	A
385	ETG AQUARIUS IMO 9928384	81,976	2022	229 m	MAN - 6S50ME-B9	3.2	A
384	BABITONGA IMO 9858292	81,770	2019	229 m	Mitsui - 1DE : 2 SA 6 CY	3.2	A
383	BW NARA IMO 9836373	81,759	2020	229 m	MAN - 6S50ME-B9.3	3.2	A
382	EMERALD DAISHAN IMO 9981295	85,515	2023	229 m	MAN-B&W 6S60ME-C10	3.2	A
381	MOUDROS IMO 9952414	82,177	2022	229 m	MAN - 6G50ME-C9	3.2	A
380	DORIC KATANA IMO 9897585	82,448	2021	229 m	Mitsui - 6S60ME-C10	3.2	A
379	MAPLE WISDOM IMO 9964663	82,253	2023	229 m	MAN-B&W 6S60ME-C10	3.2	A
378	AQUAPRIMA IMO 9933248	82,270	2022	229 m	CSSC-MES Diesel Co. Ltd. 6S60ME-C10	3.2	A
377	ROSTRUM CYNIC IMO 9955909	82,216	2023	229 m	MAN - 6S60ME-C10	3.2	A
376	SERENDIPITY IMO 9906465	82,298	2021	229 m	MAN - 6S60ME-C8	3.2	A
388	KYPROS SEA IMO 9675602	77,128	2014	225 m	MAN - 6S60MC	3.2	A
390	CSSC CAPE TOWN IMO 9853888	120,582	2020	255 m	MAN - 6G60ME-C9	3.2	A
392	NORDIC SIKU IMO 9895800	95,758	2021	230 m	MAN - 6G60ME-C9	3.2	A
391	CL HUAIHUA IMO 9953353	64,784	2024	200 m	6S50ME-C9-HPSCR	3.2	A
389	LOWLANDS AMBITION IMO 9947287	82,400	2024	229 m	Mitsui E&S DU Co Ltd 6S60ME-C10-EGRBP	3.2	A
395	ASCANIOS IMO 9276169	76,878	2004	225 m	MAN - 5S60MC-C	3.2	A
398	SUDETY IMO 9582518	82,138	2013	229 m	MAN - 6S60MC-C	3.2	A
397	YANGZE 6 IMO 9718909	63,478	2014	200 m	Wärtsilä - 10S90ME-C9	3.2	A
396	SHINE PEARL IMO 9971496	82,426	2024	229 m	Hudong Heavy Machinery Co Ltd - China 6S60ME-C10-HPSCR	3.2	A
394	ARISTOTELES GRAECIA IMO 9843766	82,096	2020	229 m	DALIAN MARINE - 6S60ME-C8	3.2	A
393	JAG AALOK IMO 9706566	82,023	2016	229 m	MAN - 6S60MC-C8	3.2	A
400	ROSTRUM SCEPTIC IMO 9955923	82,191	2024	229 m	MAN - 6S60ME-C10	3.2	A
399	KRISTIAN OLDENDORFF IMO 9952505	82,143	2024	229 m	MAN - 6G50ME-C9	3.2	A

Page 8 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.