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)

#1,007 of 3,436 bulk carriers

CO₂ intensity

3.7 g CO₂/dwt·nm

vs segment average (4.71)

-21% 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
1003	BRIGHT VENTURE IMO 9868883	81,486	2020	229 m	6S60ME-C8.2	3.7	B
1002	LIVITA IMO 9801299	63,532	2017	200 m	Hitachi - 6S50ME-B9	3.7	B
1001	ORPHEUS IMO 9646675	75,631	2017	225 m	Hefei Rongan Power Mchy. Co. Ltd. 5RT-flex58T	3.7	B
999	VULCANIA IMO 9718686	82,036	2015	229 m	MAN - 6S60ME-C8	3.7	B
998	ST AJISAI IMO 9919668	61,105	2022	200 m	MAN - 6S50ME-B9	3.7	B
1006	SEA NOVA IMO 9734719	81,773	2017	229 m	Wärtsilä - 6S60ME-C8	3.7	B
1020	DANHIL IMO 9632959	81,354	2012	229 m	Hyundai - 6S60ME-C8	3.8	B
1021	XING YANG HAI IMO 9949297	85,016	2022	227 m	CSIC Diesel Engine Co Ltd 6S60ME-C8	3.8	B
1016	FEDERAL INDUS IMO 9860582	63,458	2019	200 m	MAN - 6S50MC-B9	3.8	B
1018	STAR ROBERTA IMO 9700653	63,426	2015	200 m	Doosan - 5S60ME-C8	3.8	B
1017	CL CHANGSHA IMO 9953286	64,726	2023	200 m	MAN-B&W 6S50ME-C9	3.8	B
1012	AEOLIAN FORTUNE IMO 9461192	82,099	2011	229 m	MAN - 6S60MC-C	3.8	B
1015	MERCURY RISING IMO 9687708	81,027	2015	229 m	MAN - 6S60ME-C8	3.8	B
1014	TAI STEADINESS IMO 9961233	64,589	2024	200 m	MAN-B&W 6S50ME-C9	3.8	B
1013	APOLLO.GR IMO 9760079	60,437	2016	200 m	Mitsui - 6S50ME-B9	3.8	B
1011	NAVIOS CENTAURUS IMO 9590072	81,472	2012	229 m	MAN - 6S60MC	3.8	B
1010	CMB TENIERS IMO 9916214	63,611	2021	200 m	MAN - 6S50ME-B9	3.8	B
1019	OSHIMA JAPAN IMO 9872975	62,661	2021	200 m	—	3.8	B
1009	RUBY IMO 9714707	61,192	2013	200 m	MAN - 6S50ME-B9	3.8	B
1008	KIM OLDENDORFF IMO 9848998	81,284	2019	229 m	Yichang - 6S60ME-C8	3.8	B
1007	XIN HAI TONG 812 IMO 9639555	81,563	2012	229 m	Mitsubishi - MITSUBISHI 6UEC50LSE	3.8	B
1022	BULK ITALY IMO 9875032	81,603	2020	229 m	MAN - 6S60ME-C8	3.8	B
1023	CL ANZI HE IMO 9890616	63,077	2020	200 m	MAN - 6S60ME-C8	3.8	B
1027	NEFELI IMO 9317468	77,171	2009	225 m	MAN - 6S60MC-C	3.8	B
1029	SEAHAWK IMO 9974436	63,253	2025	200 m	MAN-B&W 6G50ME-C9	3.8	B
1026	CL HYAKU IMO 9942081	63,492	2023	200 m	MAN - 6G70ME-C9	3.8	B
1034	SENECA IMO 9591179	83,975	2013	235 m	Hyundai - 6S60ME-C8	3.8	B
1033	QUEEN SARAH IMO 9618666	81,221	2023	229 m	MAN - 5S60MC-C	3.8	B
1032	FENG LI HAI IMO 9747534	63,424	2017	200 m	Hudong Heavy Machinery - 5S50ME-C8	3.8	B
1025	BRIGHT IMABARI IMO 9801316	63,504	2017	200 m	Mitsui - 6S50MC-B9	3.8	B
1031	ZHENG YAO IMO 9601883	81,716	2014	229 m	Jiangsu Antai Power Co. Ltd. 5S60ME-C8	3.8	B
1030	AQUAVITA ETERNITY IMO 9880491	80,929	2021	229 m	MAN - 6S60ME-C8	3.8	B
1024	MYRA IMO 9418456	82,226	2010	229 m	MAN - 6S60MC-C	3.8	B
1028	EMERALD JINTANG IMO 9991525	63,910	2024	200 m	MAN-B&W 6G50ME-C9	3.8	B
1050	KAREN OLDENDORFF IMO 1021714	82,116	2025	229 m	MAN-B&W 6G50ME-C9	3.8	B
1049	ANADOLU S IMO 9667758	52,199	2014	183 m	Mitsui - 6S50MC-C	3.8	B
1048	NAVIOS AMITIE IMO 9909053	82,002	2015	229 m	MAN - 6S60ME-C8	3.8	B
1047	KILIAN OLDENDORFF IMO 9863089	81,246	2020	229 m	Yichang - 6S60ME-C8 (Tier II)	3.8	B
1046	GUO YUAN 28 IMO 9591466	75,864	2013	225 m	Wärtsilä - 5RT-flex58T	3.8	B
1045	GOLDEN FURIOUS IMO 9860128	80,595	2021	229 m	MAN - 6S60ME-C8 (Tier II)	3.8	B
1044	SEALADY IMO 9748734	60,436	2016	200 m	MAN - 6S50MC-C8	3.8	B
1043	MIM VANGELIS JR IMO 9302786	76,619	2005	225 m	Hitachi - 6S60MC	3.8	B
1042	FRONTIER HARVEST IMO 9487976	179,293	2011	292 m	Hyundai - 8RTA82C	3.8	B
1041	SFERA IMO 9304576	76,801	2006	225 m	MAN - 7S50MC-C	3.8	B
1040	SEAEAGLE II IMO 9870886	61,305	2019	200 m	MAN - 6S50ME-B9	3.8	B
1039	JUST IMO 9581370	57,551	2011	190 m	STX - 6S50MC-C7	3.8	B
1038	GENCO SCORPION IMO 9729477	64,000	2015	200 m	MAN - 5S60ME-C8	3.8	B
1037	EFE MERSIN IMO 9792022	60,000	2017	198 m	Diesel United - 6RT-flex50	3.8	B
1036	EGRET STAR IMO 9593751	81,678	2012	229 m	Hudong Heavy Machinery - HHM-MAN B&W 5S60MC-C.	3.8	B
1035	MAIRINI IMO 9474670	79,023	2010	229 m	MAN - 7S50MC-C	3.8	B

Page 21 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.