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)

#1,539 of 3,531 bulk carriers

CO₂ intensity

4.3 g CO₂/dwt·nm

vs segment average (4.87)

-11% 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
1500	LIGNUM WEB IMO 9973054	42,540	2023	183 m	MAN - 5S50ME-C9	4.3	C
1507	BEI LUN 17 IMO 9672052	63,150	2014	200 m	MAN - 5G60ME-C9	4.3	C
1499	SPRING SNOW IMO 9473274	75,200	2010	225 m	Hyundai - 5 S 60 MC-C	4.3	C
1503	SDTR DORIS IMO 9877860	84,998	2021	227 m	MAN - 6S60ME-C8	4.3	C
1502	CORA OLDENDORFF IMO 9622916	93,005	2012	229 m	Hyundai - 6 S 60 MC-C 7	4.3	C
1501	CHRISTINA V IMO 9760055	66,653	2018	200 m	Mitsui - 7S50ME-B9.3 Tier II	4.3	C
1505	ZEUS IMO 9426049	93,199	2010	229 m	Doosan - 6S60MC-C	4.3	C
1510	ZHENG HENG IMO 9593799	81,948	2012	229 m	MAN - 5S60ME-C8	4.3	C
1509	SWAN IMO 9350068	53,487	2006	190 m	Mitsui - 6S50MC-C	4.3	C
1511	SUNISA NAREE IMO 9751248	63,007	2016	200 m	Doosan - 5G60ME-C9	4.3	C
1508	PU AN TONG IMO 9593763	81,649	2012	229 m	Hudong Heavy Machinery - 5S60MC-C8	4.3	C
1513	DIONE IMO 9729881	81,145	2017	229 m	Doosan - 6S60ME-C8	4.3	C
1512	CRIMSON GLORY IMO 9732151	57,981	2015	190 m	MAN - 6S50ME-B9	4.3	C
1514	LAURA IMO 9700665	63,399	2015	200 m	Doosan - 5S60ME-C8	4.3	C
1516	ERENA IMO 9433664	83,468	2011	229 m	Mitsui - 6S60MC-C	4.3	C
1515	MINOAN SEA IMO 9623544	81,517	2016	229 m	MAN - 5S60MC-C8 (Tier II)	4.3	C
1518	SEA TREASURE IMO 9885427	61,192	2020	200 m	MAN - 6S50ME-B9	4.3	C
1517	STAR FIGHTER IMO 9642198	61,455	2013	200 m	MAN - 6S50MC-C8	4.3	C
1520	LUVIA IMO 9316220	55,317	2004	190 m	Hudong Heavy Machinery - 6S50MC-C	4.3	C
1519	CLIPPER KATE IMO 9721061	63,607	2017	200 m	Jiangsu Antai Power Co. Ltd. 5S60ME-C8	4.3	C
1522	ATLANTIC STAR IMO 9473327	75,003	2011	225 m	Hyundai - 5 S 60 MC-C	4.3	C
1521	SHARP ISLAND IMO 9748370	61,193	2016	200 m	MAN - 6S50MC-C8	4.3	C
1527	CARAVOS LIBERTY IMO 9653795	63,500	2013	200 m	Doosan - 6S60MC-C8.2 (tier ii)	4.3	C
1526	ORION IMO 9735945	63,473	2015	200 m	Wärtsilä - 5RT-flex58T	4.3	C
1528	AMIS NATURE IMO 9787974	55,472	2018	190 m	Kawasaki - 6S50ME-B8	4.3	C
1525	QING QUAN SHAN IMO 9741530	63,472	2016	200 m	Yichang - 5S60ME-C8	4.3	C
1529	IVS NORTH BERWICK IMO 9740902	60,475	2016	200 m	MAN - 6S50MC-C	4.3	C
1524	GEORG OLDENDORFF IMO 9702596	80,866	2015	229 m	MAN - 6S60ME-C8	4.3	C
1523	PACIFIC BLESSING IMO 9848089	63,566	2019	200 m	Yichang - 5S60ME-C8	4.3	C
1536	SPAR CORVUS IMO 9490791	58,000	2011	190 m	MAN - 6S50MC-C	4.3	C
1530	ULTRA ANGEL IMO 9812494	61,298	2017	200 m	Mitsui - 6S50ME-B9	4.3	C
1538	GIFT IMO 9625803	57,347	2012	190 m	STX - 6 S 50 MC-C	4.3	C
1537	CL BILIU HE IMO 9890604	63,081	2020	200 m	MAN - 6S60ME-C8	4.3	C
1535	EVA SHANGHAI IMO 9863869	63,683	2021	200 m	MAN - 6S50ME-C9 (Tier II)	4.3	C
1534	FUAT BEY IMO 9663817	35,437	2014	180 m	MAN - 6S46MC-C8	4.3	C
1533	CASDA IMO 9802267	64,012	2018	200 m	Mitsui - 6S50ME-B9	4.3	C
1532	AM ZENICA IMO 9669342	76,089	2014	225 m	Hudong Heavy Machinery - HHM-MAN B&W 5S60ME-C8.2	4.3	C
1531	CENTURION IMO 9914371	61,050	2021	200 m	MAN - 6S50ME-B9	4.3	C
1545	DORIC VALOUR IMO 9426257	58,109	2011	190 m	Mitsui - 6S50MC-C	4.3	C
1546	STAR COPENHAGEN IMO 9699359	63,495	2015	200 m	MAN - 5S60ME-C8	4.3	C
1544	BENJAMIN OLDENDORFF IMO 9853034	62,623	2020	2 m	MAN - (Tier II)	4.3	C
1547	KAVO AETOS IMO 9290232	52,384	2003	190 m	Kawasaki - 6S50MC	4.3	C
1543	YANGZE 7 IMO 9718911	63,523	2014	200 m	Wärtsilä - 5RT-flex58T	4.3	C
1542	DONOUSA IMO 9284867	76,417	2004	225 m	Mitsui - GK-2230-1300/1200	4.3	C
1541	SINOP IMO 9644184	63,200	2013	200 m	Doosan - 5S60ME-C8	4.3	C
1540	NORSE VERACRUZ IMO 9972048	40,025	2024	183 m	Mitsui - 5S50ME-C9	4.3	C
1539	SV ARISTA IMO 9566564	61,649	2011	200 m	Kawasaki - 6S50MC-C8.2	4.3	C
1550	THOR CALIBER IMO 9440928	58,732	2008	190 m	MAN - 6S50MC-C	4.3	C
1549	SEABISCUIT IMO 9619787	82,624	2014	229 m	MAN - 7S50MC-C	4.3	C
1548	BORDEAUX IMO 9483229	55,621	2011	188 m	MAN - 6S50MC-C	4.3	C

Page 31 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.