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)

#760 of 3,531 bulk carriers

CO₂ intensity

3.6 g CO₂/dwt·nm

vs segment average (4.87)

-26% 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
751	OCEAN AZURE IMO 9960150	63,702	2023	200 m	MAN-B&W 6S50ME-B9	3.6	B
753	GENOA IMO 9805659	60,396	2017	200 m	Kawasaki - 6S50ME-B9	3.6	B
756	THOUSAND SPRING IMO 9867425	81,763	2020	229 m	MAN - 6S60ME-C	3.6	B
755	PAN TOPAZ IMO 9625827	82,784	2012	229 m	MAN - 6S60MC-C	3.6	B
754	PUMA MAX IMO 9589152	81,339	2012	229 m	Hyundai - 7S50MC-C8	3.6	B
759	PAN CERES IMO 9582465	82,158	2013	229 m	Mitsui - 6S60MC-CMKVII	3.6	B
758	ORANGE HARMONY IMO 9764099	81,739	2017	229 m	CSSC - 6S60MC-C	3.6	B
757	POSEIDON VENTURE IMO 9362229	76,585	2006	225 m	Mitsui - 6S60MC	3.6	B
752	PACIFIC EAST IMO 9522661	176,000	2012	292 m	MAN - 6S70MC	3.6	B
769	AM CONTRECOEUR IMO 9583184	82,177	2011	229 m	Mitsui - 7 S 50 MC-C	3.6	B
768	PEARL ISLAND IMO 9801720	63,878	2018	200 m	Mitsui - 6S50ME-B9	3.6	B
760	STEEL C IMO 9700330	63,118	2015	200 m	MAN - 5G60ME-C9	3.6	B
767	ETG UBUNTU IMO 9952907	64,195	2022	200 m	Hudong Heavy Machinery Co Ltd - China 6S50ME-C9-HPSCR	3.6	B
766	SAPHIRA IMO 9909209	82,577	2021	229 m	MAN - 6S60ME-C10	3.6	B
765	PEGASOS IMO 9624653	81,598	2012	229 m	Hyundai - 6S60MC	3.6	B
764	DAWN IMO 9750440	63,561	2018	200 m	DALIAN MARINE - 5S60MC-C8	3.6	B
763	REX OLDENDORFF IMO 9463671	121,412	2011	260 m	MAN - 6S60MC-C	3.6	B
762	IZUMI IMO 9901831	82,005	2021	229 m	MAN - 6S60ME-C8	3.6	B
761	ZHENG HUI IMO 9596105	81,797	2014	229 m	MAN - 5S60ME-C	3.6	B
771	ELLIREA IMO 9757008	60,263	2017	198 m	Diesel United - 6RT-flex50	3.6	B
773	ALMA IMO 9706530	81,947	2017	229 m	Hudong Heavy Machinery - 6S60MC-C8.2 (Tier II)	3.6	B
770	AL DHAFRA IMO 9852767	63,555	2019	200 m	Hitachi - 6S50ME-B9	3.6	B
784	BISON IMO 9622423	82,197	2013	229 m	MAN - 7S50MC-C	3.6	B
774	JSW SALEM IMO 9537721	176,217	2012	292 m	CSSC - 6S70MC	3.6	B
772	IONIC PRIDE IMO 9749300	84,992	2014	229 m	Mitsui - 6S60ME-C8	3.6	B
783	MOONBEAM IMO 9493987	58,138	2013	190 m	Mitsui - 6S50MC-C	3.6	B
782	MARINE HONESTY IMO 9455557	113,899	2011	250 m	Hyundai - 6S60MC-C	3.6	B
781	SIDER IMABARI IMO 9984417	40,320	2024	183 m	J-ENG 6UEC42LSH-EcoD3	3.6	B
780	G. B. CORRADO IMO 9314624	77,061	2008	225 m	Kawasaki - 5S60MC-C	3.6	B
779	AOM MARIA LAURA IMO 9911410	82,312	2021	229 m	CSSC-MES Diesel Co. Ltd. 6S60ME-C10	3.6	B
778	XIN ZHI SEA IMO 9955014	64,107	2024	200 m	MAN - 6G50ME-C9	3.6	B
777	CANOPUS IMO 9843443	80,992	2021	229 m	Doosan - 6S60ME-C8 (Tier II)	3.6	B
776	ARUNA BERK IMO 9543689	57,414	2011	193 m	HHI - 7S50MC-C8	3.6	B
775	STAR AMETHYST IMO 9523251	82,123	2009	229 m	Mitsui - 6S60MC-C	3.6	B
789	NORD MAGELLAN IMO 9874961	63,547	2020	200 m	MAN - 6S50ME-B9	3.6	B
788	HUAN HANG 99 IMO 9646651	75,390	2018	225 m	Wärtsilä - 5RT-flex58T	3.6	B
790	MARVELOUS STAR IMO 9864095	81,980	2020	229 m	MAN - 6S60ME-C8	3.6	B
787	PENTA IMO 9460605	76,424	2011	225 m	Kawasaki - 5S60MC-C	3.6	B
794	ONE ENERGY IMO 9592123	81,076	2011	229 m	MAN - 7S50MC	3.6	B
793	KYPROS LOYALTY IMO 9717424	77,998	2015	225 m	Mitsui - 6S60ME-C8	3.6	B
792	GREEK SEAS IMO 9718698	82,043	2015	229 m	MAN - 6S60ME-C8	3.6	B
786	NORDIC SANNGIJUQ IMO 9895795	95,758	2021	230 m	MAN - 6G60ME-C9	3.6	B
791	KASTOR IMO 9843405	80,996	2020	229 m	Doosan - 6S60ME-C8 (Tier II)	3.6	B
785	FEDERAL INTEGRITY IMO 9933066	63,729	2023	200 m	Mitsui - 6S50ME-B9	3.6	B
800	NORSE EVOLUTION IMO 9964821	66,305	2023	200 m	MAN-B&W 6S50ME-C9	3.6	B
799	GCL LUXEMBOURG IMO 9921843	82,310	2021	229 m	MAN - 6S60ME-C10	3.6	B
798	REGINA OLDENDORFF IMO 9535242	121,677	2011	260 m	MAN - 6S60MC-C	3.6	B
797	BIRTE OLDENDORFF IMO 9448047	114,500	2010	250 m	Hyundai - 6S60MC-C	3.6	B
796	RUBY ETERNITY IMO 9950428	63,807	2023	200 m	MAN - 6S50ME-C9	3.6	B
795	BRIGHT VENTURE IMO 9868883	81,486	2020	229 m	6S60ME-C8.2	3.6	B

Page 16 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.