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)

#1,135 of 3,436 bulk carriers

CO₂ intensity

3.9 g CO₂/dwt·nm

vs segment average (4.71)

-18% 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
1100	YILDIZLAR 3 IMO 9370795	49,507	2008	200 m	Mitsubishi - 6UEC50LSII	3.8	B
1106	EQUINOX SOFRANO IMO 9860221	61,056	2019	200 m	MAN - 6S50ME-B9	3.8	B
1105	EPSON TRADER IMO 9872963	62,661	2021	200 m	MAN - 6S50ME-B9	3.8	B
1099	XIN HAI TONG 23 IMO 9453236	56,708	2010	190 m	MAN - 6S50MC-C	3.8	B
1103	KOBAYASHI MARU IMO 9847011	60,397	2019	200 m	Mitsui - 6S50ME-B9.3	3.8	B
1102	STAR OCEAN IMO 1016484	64,576	2025	200 m	MAN-B&W 6S50ME-C9	3.8	B
1110	KAVO YERAKI IMO 9286607	82,926	2006	229 m	MAN - 7S50MC-C	3.8	B
1109	GIORGIS IMO 9619775	82,566	2014	229 m	MAN - 7S50MC-C	3.8	B
1111	FANTASEA IMO 9342827	76,596	2006	225 m	Mitsui - 6S60MC	3.8	B
1108	ANTIPAROS IMO 9600657	81,572	2012	229 m	Doosan - 6S60MC-C	3.8	B
1120	FJ BIANCA IMO 9866172	81,750	2020	229 m	MAN - 6S60ME-C8	3.8	B
1107	GREEN K-MAX 4 IMO 9838084	80,891	2020	229 m	Hyundai - 6S60ME-C8 (Tier II)	3.8	B
1119	LACERTA IMO 9512367	82,265	2012	229 m	Mitsui - 6S60MC-C	3.8	B
1118	AQUA LADY IMO 9288435	76,492	2004	225 m	MITSUI ENGINEERING 6S60MC	3.8	B
1117	ALBATROSS ISLAND IMO 9421439	61,414	2010	200 m	Kawasaki - 6S50MC-C7	3.8	B
1116	LOWLANDS FUTURE IMO 9799771	60,063	2017	200 m	MAN - 6S50ME-B9	3.8	B
1115	EXELIXSEA IMO 9476953	76,361	2011	225 m	Kawasaki - 5S60MC-C	3.8	B
1114	SPRING JASMINE IMO 9942079	63,441	2023	200 m	MAN - 6G70ME-C9	3.8	B
1113	FEDERAL INTEGRITY IMO 9933066	63,729	2023	200 m	Mitsui - 6S50ME-B9	3.8	B
1112	SIBONEY M IMO 9875018	81,621	2020	229 m	MAN - 6S60ME-C8	3.8	B
1121	YASA SATURN IMO 9848144	61,075	2019	200 m	Hudong Heavy Machinery - 6S50ME-B9	3.8	B
1125	MAHA YAYA IMO 9525613	84,108	2013	235 m	Hyundai - 6S60ME-C8	3.8	B
1127	CMB JORDAENS IMO 9860635	63,447	2019	200 m	MAN - 6S50ME-B9	3.8	B
1124	XH HOPE IMO 9877925	84,998	2022	227 m	CSSC Marine Power Co Ltd - China 6S60ME-C8-HPSCR	3.8	B
1130	ASKIO IMO 9848649	63,464	2020	200 m	MAN - 6S50ME-B9	3.8	B
1129	CL BEIJING IMO 9649299	81,700	2013	229 m	MAN - 6S60ME-C	3.8	B
1128	BSM FANGCHENG IMO 9863819	63,674	2020	200 m	MAN - 6S50ME-C9 (Tier II)	3.8	B
1123	ALBERTITO IMO 9748423	61,301	2016	200 m	MAN - 6S50MC-C8	3.8	B
1122	XIN JI XING IMO 9256872	76,015	2004	225 m	Mitsui - 6S60MC	3.8	B
1126	NECKLACE IMO 9548225	92,903	2012	229 m	MAN - 6S60MC-C	3.8	B
1132	SAVITA NAREE IMO 9726437	62,971	2016	200 m	Doosan - 5G60ME-C9	3.9	B
1131	CASSIOPEIA OCEAN IMO 9837286	81,700	2018	229 m	Mitsui - 6S60ME-C8	3.9	B
1133	RED ORCHID IMO 9757890	61,645	2015	200 m	MAN - 6S50ME-B9	3.9	B
1134	ZERMATT IMO 9634830	82,026	2013	229 m	Mitsui - 6S60MC-CMKVII	3.9	B
1136	GLBS MIGHT IMO 9972804	64,166	2024	200 m	Hudong Heavy Machinery Co Ltd - China 6S50ME-C9-HPSCR	3.9	B
1137	SEAHUNTER IMO 9974424	63,253	2024	200 m	MAN-B&W 6G50ME-C9	3.9	B
1135	BULK COURAGEOUS IMO 9659919	61,393	2013	200 m	MAN - 6S50MC-C8	3.9	B
1140	RI GUAN FENG IMO 9523146	75,565	2010	225 m	Hudong Heavy Machinery - 5S60MC	3.9	B
1139	FEDERAL ILLINOIS IMO 9860647	63,386	2019	200 m	MAN - 6S50ME-B9	3.9	B
1138	AMIS WISDOM VI IMO 9589803	61,456	2011	200 m	Mitsui - 6S50MC-C8	3.9	B
1142	SM NEW ORLEANS IMO 9842499	80,897	2019	229 m	MAN - 6S60ME-C	3.9	B
1141	GERTRUDE OLDENDORFF IMO 9727601	80,959	2016	229 m	MAN - 6S60ME-C8	3.9	B
1150	ULTRALAZ IMO 9781085	64,043	2018	200 m	Mitsui - 6S50ME-B9	3.9	B
1149	AKIRA IMO 9859014	81,782	2019	229 m	MAN - 6S60ME-C8	3.9	B
1148	ARETHUSA IMO 9855563	81,541	2020	229 m	Yichang - 6S60ME-C8	3.9	B
1147	BEAUTY JASMINE IMO 9721334	63,638	2015	200 m	MAN - 5S60ME-C8	3.9	B
1146	GENOA IMO 9805659	60,396	2017	200 m	Kawasaki - 6S50ME-B9	3.9	B
1145	LEONARDO IMO 9894777	63,676	2020	200 m	Hitachi Zosen Diesel & Engineering 6S50ME-B9.2	3.9	B
1144	CHLOE IMO 9749910	81,629	2014	229 m	MAN - 6S60ME-C8	3.9	B
1143	THALEIA IMO 9542491	74,979	2011	225 m	Mitsui - 7 S 50 MC-C	3.9	B

Page 23 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.