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)

#1,204 of 3,436 bulk carriers

CO₂ intensity

3.9 g CO₂/dwt·nm

vs segment average (4.71)

-17% 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
1194	SIKINOS IMO 9967639	63,615	2023	200 m	STX Heavy Industries Co Ltd - Changwon 6G50ME-C9-HPSCR	3.9	B
1193	ASTREA IMO 9705366	81,838	2015	229 m	Mitsui - 6S60ME-C8.2	3.9	B
1200	HORIZON DIAMOND IMO 9579066	76,048	2011	225 m	Hudong Heavy Machinery - 5S60MC-C	3.9	B
1204	DANAE IMO 9855290	80,989	2021	229 m	Doosan - 6S60ME-C8	3.9	B
1205	FALKONERA IMO 9600621	81,640	2012	229 m	Doosan - MAN 6S60MC-C MK8	3.9	B
1212	MAGIC THUNDER IMO 9442407	83,375	2006	229 m	Kawasaki - KAWASAKI-MAN B&W 6S60MCC	3.9	B
1211	FLAG METTE IMO 9727974	81,200	2016	229 m	MAN - 6S60ME-C	3.9	B
1213	MALYOVITSA IMO 9835795	45,516	2020	190 m	MAN - 5G50ME-C9	3.9	B
1210	GREAT FLUENCY IMO 9728679	63,392	2016	200 m	MAN - 5S60ME-C8	3.9	B
1209	BAHAMAS L IMO 9514315	56,141	2012	190 m	MAN - 6S50MC-C	3.9	B
1208	FEDERAL IBUKI IMO 9832705	63,386	2018	200 m	Mitsui - 6S50ME-B9	3.9	B
1207	PREVAIL STAR IMO 9693769	81,055	2014	229 m	HHI - 6S50MC	3.9	B
1206	ATHINA CARRAS IMO 9592719	82,057	2012	229 m	MAN - 6S60MC-C8	3.9	B
1216	AL DHAFRA IMO 9852767	63,555	2019	200 m	Hitachi - 6S50ME-B9	3.9	B
1215	AIANTAS IMO 9729879	81,111	2016	229 m	MAN - 6S60ME-C8	3.9	B
1217	NANXIN ANGELA IMO 9307657	73,600	2006	225 m	Hudong Heavy Machinery - 5S60MC	3.9	B
1214	AENEAS IMO 9650626	75,200	2013	225 m	Hyundai - 5 S 60 MC-C	3.9	B
1219	BROAD RICH IMO 9285562	77,598	2004	225 m	MAN - 6S60MC	3.9	B
1218	TINOS IMO 9597795	81,391	2011	229 m	Hyundai - 7S60MC-C	3.9	B
1230	BUILDER IMO 9589255	81,541	2012	229 m	MAN - 7S50MC-C	3.9	B
1229	SILHOUETTE ISLAND IMO 9589798	61,412	2011	200 m	MAN - 6S50MC-C8	3.9	B
1228	LEO IRIS IMO 9709001	81,820	2015	229 m	MAN - 6S60ME-C	3.9	B
1227	DRAFTVADER IMO 9736664	66,585	2015	200 m	Mitsui - 7S50ME-B9	3.9	B
1226	BULK POLAND IMO 9682863	82,150	2010	229 m	MAN - 6S60MC-C	3.9	B
1225	PATROKLOS IMO 9729893	81,149	2017	229 m	Doosan - 6S60ME-C8	3.9	B
1224	CMB FLORIS IMO 9908499	63,628	2021	200 m	MAN - 6S50ME-B9	3.9	B
1223	AQUAVITA MINT IMO 9875628	63,500	2020	200 m	MAN - 6S50ME-C9	3.9	B
1222	AQUAVITA EVOLUTION IMO 9880489	80,916	2021	229 m	MAN - 6S60ME-C8	3.9	B
1221	NJ EARTH IMO 9229996	37,180	2003	200 m	Hudong Heavy Machinery - 6S46MC-C	3.9	B
1231	GOLDEN FAST IMO 9860116	80,573	2021	229 m	MAN - 6S60ME-C8 (Tier II)	3.9	B
1220	BULK VALOR IMO 9520675	58,105	2013	190 m	MAN - 6S50MC-C	3.9	B
1235	NORDIC ODYSSEY IMO 9529451	75,603	2010	225 m	Kawasaki - 6S60MC-C	3.9	B
1234	YAYA GOOSE IMO 9714745	60,425	2016	200 m	Mitsui - MITSUI-MAN B&W 6S50ME-B9.3	3.9	B
1233	MARINO IMO 9512898	82,012	2011	229 m	Hyundai - 6S70MC	3.9	B
1244	CRIMSON TURACO IMO 9701700	60,075	2016	200 m	MAN - 6S50ME-B9.3	3.9	B
1245	XIN HAI TONG 803 IMO 9591818	81,905	2012	229 m	Doosan - 5S60MC-C	3.9	B
1240	COMMON GALAXY IMO 9704831	63,172	2015	200 m	Hudong Heavy Machinery - 5G60ME-C9	3.9	B
1243	FEDERAL INSPIRE IMO 9925772	63,693	2022	200 m	Mitsui - 6S50ME-B9	3.9	B
1242	ULUSOY 11 IMO 9586411	79,422	2011	229 m	Wärtsilä - 7RT-flex50	3.9	B
1241	CL ZHANGJIAJIE IMO 9953365	64,766	2024	200 m	MAN-B&W 6S50ME-C9	3.9	B
1238	BENJAMIN OLDENDORFF IMO 9853034	62,623	2020	2 m	MAN - (Tier II)	3.9	B
1239	GOLDEN TIDE IMO 9977165	84,996	2025	227 m	MAN-B&W 6S60ME-C10	3.9	B
1237	DSI PYXIS IMO 9800635	60,362	2018	200 m	Mitsui E&S Machinery Co., Ltd. Tamano Machinery Factory	3.9	B
1236	TRAVERSE SINGAPORE IMO 9342865	76,619	2005	225 m	MITSUI ENGINEERING 6S60MC	3.9	B
1232	PANSOLAR IMO 9317004	76,343	2005	225 m	MITSUI ENGINEERING & SHIPBUILDING, TOKYO JAPAN 6 S 60 MC	3.9	B
1246	IONIAN MARINER IMO 9539248	83,366	2011	229 m	Mitsui - 6S60MC-C	3.9	B
1250	ZHENG JUN IMO 9593804	81,810	2013	229 m	MAN - 5S60ME-C	4.0	B
1249	ATHINA L IMO 9487627	81,358	2011	229 m	MAN - 7S50MC-C8	4.0	B
1248	NEWSEAS CRYSTAL IMO 9644835	63,800	2013	200 m	Hudong Heavy Machinery - HHM-MAN B&W 5S60MC-C8.2	4.0	B
1247	RISING SKY.GR IMO 9782259	63,405	2017	200 m	Hitachi - 6S50ME-B9	4.0	B

Page 25 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.