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)

#1,160 of 3,531 bulk carriers

CO₂ intensity

4.0 g CO₂/dwt·nm

vs segment average (4.87)

-19% 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
1148	NAN XIN 27 IMO 9358838	74,483	2006	225 m	MAN - 5S60MC-C	4.0	B
1155	DECLAN DUFF IMO 9476525	93,253	2012	229 m	STX - 6 S 60 MC-C 7	4.0	B
1154	BESIKTAS-M IMO 9291365	53,020	2003	188 m	Mitsubishi - 6UEC50LSII	4.0	B
1153	SPRING JASMINE IMO 9942079	63,441	2023	200 m	MAN - 6G70ME-C9	4.0	B
1159	MARY GORGIAS IMO 9366108	75,194	2008	225 m	Hudong Heavy Machinery - 5S60MC-C	4.0	B
1158	SM ROBERTS BANK IMO 9842504	80,833	2019	229 m	Hudong Heavy Machinery Co. Ltd. 6S60ME-C	4.0	B
1157	LADY ANNE IMO 9866184	81,688	2020	229 m	MAN - 6S60ME-C8	4.0	B
1156	AVAX IMO 9289312	75,399	2006	225 m	STX - 7 S 50 MC-C	4.0	B
1151	EXPLORER ASIA IMO 9756901	81,093	2016	229 m	MAN - 6S60MC-C	4.0	B
1160	RYSY IMO 9452622	79,602	2011	229 m	MAN - 7S50MC-C	4.0	B
1162	GUO YUAN 32 IMO 9591480	75,806	2013	225 m	Wärtsilä - 5RT-flex58T	4.0	B
1161	VIENNA IMO 9403205	58,736	2009	190 m	Mitsui - 6S50MC-C	4.0	B
1164	GOLDEN TRADER IMO 9856311	63,677	2021	200 m	MAN - 6S50ME-C9	4.0	B
1163	DORIC LIBERTY IMO 9611890	82,084	2012	229 m	MAN - 6S60MC-C8	4.0	B
1165	CONCORDIA IMO 9313292	82,499	2011	225 m	Kawasaki - 6S60MC-C	4.0	B
1170	HSL HONOLULU IMO 9950313	64,241	2023	200 m	MAN-B&W 6S50ME-C9	4.0	B
1176	LA STELLA IMO 9748368	61,286	2012	200 m	Hyundai - 6S50MC-C8	4.0	B
1169	LYRIC SUN IMO 9586629	81,276	2011	229 m	MAN - 7S50MC-C	4.0	B
1178	GEBE OLDENDORFF IMO 9727596	80,943	2016	229 m	MAN - 6S60ME-C8	4.0	B
1177	YAYA GOOSE IMO 9714745	60,425	2016	200 m	Mitsui - MITSUI-MAN B&W 6S50ME-B9.3	4.0	B
1168	DESERT VIRTUE IMO 9883132	63,553	2020	200 m	MAN - 6S50ME-B9	4.0	B
1175	CL EPIC IMO 9853022	62,623	2020	200 m	Kawasaki - 6S50ME-B9	4.0	B
1174	SYMI IMO 9669407	62,982	2014	200 m	Doosan - 5G60ME-C9	4.0	B
1173	SENECA IMO 9591179	83,975	2013	235 m	Hyundai - 6S60ME-C8	4.0	B
1172	ATHINA III IMO 9247285	73,305	2004	225 m	Hitachi - 7S50MC-C	4.0	B
1167	STOCKHOLM EAGLE IMO 9704855	63,500	2016	200 m	Hudong Heavy Machinery - 5G60ME-C9	4.0	B
1166	LEM GERANIUM IMO 9845790	64,712	2015	200 m	MAN - 7G50ME-C9	4.0	B
1179	GOLDEN FROST IMO 9849899	80,559	2020	229 m	MAN - 6S60ME-C8 (Tier II)	4.0	B
1171	KILIAN OLDENDORFF IMO 9863089	81,246	2020	229 m	Yichang - 6S60ME-C8 (Tier II)	4.0	B
1180	LING BAI IMO 9227649	75,121	2001	225 m	6S60MC	4.0	B
1183	GU IMABARI IMO 9544401	76,619	2009	225 m	Mitsui - 6S60MC	4.0	B
1182	OGBA IMO 9724001	63,488	2015	200 m	MAN - 5S60ME-C8	4.0	B
1181	FIJI IMO 9630664	81,285	2013	229 m	STX - 5S60MC-C8	4.0	B
1187	FEDERAL TOKORO IMO 9725445	55,543	2015	190 m	Mitsui - 6S50MC-C	4.0	B
1186	OMICRON ATLAS IMO 9464510	76,554	2008	225 m	MAN - 6S60MC	4.0	B
1188	V ATLAS IMO 9670846	56,451	2014	190 m	STX - 6 S 50 MC-C	4.0	B
1185	IOLCOS GENESIS IMO 9503782	84,062	2011	235 m	MAN - 6S60ME-C8	4.0	B
1184	CAMELLIA IMO 9684134	75,321	2013	225 m	MAN - 5S60ME-C	4.0	B
1200	GLOBAL PRIME IMO 9658941	56,013	2014	190 m	Mitsubishi - 6UEC50LSII	4.0	B
1199	ALPHA IMO 9489041	81,967	2011	229 m	Hyundai - 6S60MC-C8	4.0	B
1198	SW MISTRAL I IMO 9520948	58,110	2011	190 m	MAN - 7S50MC-C	4.0	B
1197	EVER BEST IMO 9607837	81,717	2013	229 m	Dalian 5RT-flex58T	4.0	B
1196	IRENE IMO 9757931	61,299	2016	200 m	MAN - 6S50ME-B9	4.0	B
1195	SCARABE IMO 9712967	60,435	2015	200 m	Mitsui - 6S50ME-B9.3	4.0	B
1194	CERVIA IMO 9570838	93,273	2010	230 m	Hyundai - 6S60MC	4.0	B
1193	CL FUZHOU HE IMO 9890630	63,125	2021	200 m	MAN - 6S60ME-C8	4.0	B
1192	CL SHA HE IMO 9890654	63,092	2020	200 m	MAN - 6S60ME-C8	4.0	B
1191	TINOS IMO 9597795	81,391	2011	229 m	Hyundai - 7S60MC-C	4.0	B
1190	ADELANTE IMO 9597109	81,585	2012	229 m	STX - 6 S 50 MC-C	4.0	B
1189	ZHENG YAO IMO 9601883	81,716	2014	229 m	Jiangsu Antai Power Co. Ltd. 5S60ME-C8	4.0	B

Page 24 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.