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)

#1,051 of 3,436 bulk carriers

CO₂ intensity

3.8 g CO₂/dwt·nm

vs segment average (4.71)

-20% 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
1054	YUAN HANG CAI FU IMO 9580481	76,037	2012	225 m	MAN - 5S60MC-C8	3.8	B
1056	MINOAN FALCON IMO 9605841	92,700	2011	229 m	Doosan - 6S60MC	3.8	B
1053	SEABISCUIT IMO 9619787	82,624	2014	229 m	MAN - 7S50MC-C	3.8	B
1064	NOVA CAELI IMO 9836414	81,612	2019	229 m	MAN - 6S60ME-C8	3.8	B
1057	PIAVIA IMO 9570864	93,296	2011	229 m	Doosan - 6S60MC	3.8	B
1052	FLAG EVI IMO 9619799	82,629	2014	229 m	MAN - 7S50MC-C	3.8	B
1063	VELSHEDA IMO 9494008	82,172	2012	229 m	Mitsui - 6S50MC-C	3.8	B
1062	BELFUJI IMO 9860661	63,468	2020	200 m	MAN - 6S50ME-B9	3.8	B
1061	NS NINGBO IMO 9954979	64,128	2024	200 m	MAN-B&W 6G50ME-C9	3.8	B
1060	LUVIA IMO 9316220	55,317	2004	190 m	Hudong Heavy Machinery - 6S50MC-C	3.8	B
1059	ARTVIN IMO 9595034	81,827	2011	229 m	MAN - 6S60MC-C8	3.8	B
1058	DSI ALTAIR IMO 9749245	60,309	2016	198 m	Wärtsilä - 6RT-flex50	3.8	B
1051	LV STAR IMO 9553218	79,252	2012	229 m	MAN - 7S50MC-C	3.8	B
1055	CORONA IMO 9391971	83,688	2009	229 m	Kawasaki - 6S60MC-C	3.8	B
1065	CUI PING FENG IMO 9523172	75,485	2011	225 m	Hudong Heavy Machinery - 5S60MC	3.8	B
1069	YUN MI FENG IMO 9523196	75,421	2011	225 m	MAN - 5S60MC	3.8	B
1068	DESPINA V IMO 9727986	81,200	2018	229 m	MAN - 6S60ME-C	3.8	B
1070	ALMA IMO 9706530	81,947	2017	229 m	Hudong Heavy Machinery - 6S60MC-C8.2 (Tier II)	3.8	B
1067	DEE4 OAK IMO 9790854	63,490	2017	200 m	Mitsui - 6S50ME-B9	3.8	B
1072	PROPEL WEALTH IMO 9736353	80,868	2015	229 m	MAN - 6S60ME-C	3.8	B
1071	TAI STRIDE IMO 9926001	64,539	2022	200 m	Kawasaki Heavy Industries Ltd - Japan 6S50ME-C9.6-EGRBP diesel	3.8	B
1066	ULTRA COURAGE IMO 9856256	63,646	2019	200 m	MAN - 6S50ME-C9	3.8	B
1079	HUA XING HAI IMO 9758583	81,107	2017	229 m	Hudong Heavy Machinery - 6S60ME-C8	3.8	B
1078	GOLDEN FREEZE IMO 9849904	81,135	2021	229 m	MAN - 6S60ME-C8 (Tier II)	3.8	B
1077	MARIETTA C IMO 9281437	73,640	2002	225 m	HSD ENGINE CO., LTD. 6S60MC MK6	3.8	B
1076	SANTA ACE IMO 9951977	63,725	2022	200 m	MAN - 6S50ME-C9	3.8	B
1075	S SAMBA IMO 9712486	84,867	2015	229 m	Mitsui - 6S60ME-C7.1	3.8	B
1074	NORDIC ORION IMO 9529463	75,603	2011	225 m	Kawasaki - 6S60MC-C	3.8	B
1073	MYKONOS WAVE IMO 9453406	87,340	2012	229 m	Hudong Heavy Machinery - 5S60MC-C	3.8	B
1080	MEHMET AKSOY IMO 9607502	81,490	2012	229 m	Hyundai - 6S60MC	3.8	B
1082	SEAJOY II IMO 9870874	61,331	2019	200 m	MAN - 6S50ME-B9.5	3.8	B
1084	KAVO ALKYON IMO 9291121	75,300	2005	225 m	Mitsui - 7 S 50 MC-C	3.8	B
1083	MARVELOUS STAR IMO 9864095	81,980	2020	229 m	MAN - 6S60ME-C8	3.8	B
1081	BULK ATACAMA IMO 9683130	61,384	2008	200 m	MAN - 6S50MC-C8	3.8	B
1092	CL CHENZHOU IMO 9953339	64,741	2023	200 m	UnKnown 6S50ME-C9-HPSCR	3.8	B
1091	JAG AARATI IMO 9478200	80,323	2011	229 m	MAN - 7S50MC-C	3.8	B
1093	ATMOSPHERE IMO 9527283	76,606	2009	225 m	MAN - 6S60MC	3.8	B
1090	WADI ALKARNAK IMO 9127136	70,090	1997	225 m	6S50MC	3.8	B
1089	EQUINOX DAWN II IMO 9725457	60,456	2015	200 m	Mitsui - 6S50ME-B9.3TII	3.8	B
1088	GISELA OLDENDORFF IMO 9702601	80,839	2015	229 m	MAN - 6S60ME-C	3.8	B
1087	HARRIER S IMO 1082809	40,563	2025	180 m	MAN-B&W 5S50ME-C9	3.8	B
1086	FE MAGICIAN IMO 9660633	70,776	2011	222 m	—	3.8	B
1085	DARYA SATI IMO 9752424	64,000	2018	200 m	CSSC - 5S60ME-C8	3.8	B
1096	JOANNA IMO 9473183	76,000	2010	225 m	Hudong Heavy Machinery - 5S60MC	3.8	B
1095	KYPROS SPIRIT IMO 9717436	77,998	2016	225 m	MAN - 6S60ME-C8	3.8	B
1094	CHILOE ISLAND IMO 9610755	58,044	2013	190 m	MAN - 7S50MC-C	3.8	B
1100	STAR OCEAN IMO 1016484	64,576	2025	200 m	MAN-B&W 6S50ME-C9	3.8	B
1099	PAMPERO IMO 9426104	93,275	2011	229 m	Doosan - 6S60MC-C	3.8	B
1098	EQUINOX SOFRANO IMO 9860221	61,056	2019	200 m	MAN - 6S50ME-B9	3.8	B
1097	KOBAYASHI MARU IMO 9847011	60,397	2019	200 m	Mitsui - 6S50ME-B9.3	3.8	B

Page 22 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.