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)

#1,771 of 3,531 bulk carriers

CO₂ intensity

4.6 g CO₂/dwt·nm

vs segment average (4.87)

-6% 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
1751	AMIS LEADER IMO 9520819	58,107	2010	190 m	MAN - 7S50MC-C	4.6	C
1752	FEDERAL TRIDENT IMO 9658977	55,178	2016	190 m	MAN - 6S50MC-C	4.6	C
1753	STAR ANTARES IMO 9712694	61,258	2015	200 m	MAN - 6S50ME-B9	4.6	C
1754	LIBERTY IMO 9423542	58,679	2009	190 m	Mitsui - 6S50MC-C	4.6	C
1755	POCHARD IMO 9960162	37,991	2023	180 m	MAN-B&W 6S46ME-B8	4.6	C
1756	NORD SINGAPORE IMO 9913535	42,904	2022	180 m	Mitsui Engineering & Shipbuilding Co. Ltd. 5S50ME-C9-HPSCR	4.6	C
1757	UNITY N IMO 9490466	79,642	2011	229 m	Hyundai - 7 S 50 MC-C 7	4.6	C
1758	TAXIDIARA IMO 9331919	56,049	2007	190 m	Mitsui - 6S50MC	4.6	C
1759	COMMON LUCK IMO 9617741	58,756	2012	197 m	Dalian 6S50MC-C8	4.6	C
1760	STAR GENESIS IMO 9457464	80,671	2010	229 m	MAN - 7S50MC-C	4.6	C
1761	LAKER IMO 9581368	57,399	2011	190 m	STX - 6S50MC-C7	4.6	C
1762	FEDERAL PASSION IMO 9926049	42,692	2022	183 m	MAN - 5S50ME-C9	4.6	C
1763	XO COPENHAGEN IMO 9520780	58,107	2010	190 m	MAN - 7S50MC-C	4.6	C
1764	TWIN DELIGHT IMO 9984481	40,656	2024	183 m	J-ENG 6UEC42LSH-EcoD3	4.6	C
1765	MAHA YAYA IMO 9525613	84,108	2013	235 m	Hyundai - 6S60ME-C8	4.6	C
1766	KMAX VISION IMO 9436654	91,913	2009	230 m	STX - 7 S 50 MC-C	4.6	C
1767	KONYA IMO 9657789	63,200	2013	200 m	Doosan - DOOSAN-MAN 5S60ME-C8.1-TII	4.6	C
1768	MAMA STRENGTH IMO 9673525	75,610	2014	225 m	MAN - 5S60ME-C8	4.6	C
1769	VALENCIA EAGLE IMO 9699311	63,556	2015	200 m	MAN - 5S60ME-C8	4.6	C
1770	LUMINA IMO 9690509	55,865	2015	190 m	MAN - 6S50MC-C	4.6	C
1771	LILA SEOUL IMO 9566837	79,454	2012	229 m	Hitachi - 5S60MC-C8	4.6	C
1772	TRAPEZITZA IMO 9968499	45,189	2024	190 m	MAN-B&W 5G50ME-C9	4.6	C
1773	AVON TRADER IMO 9566849	79,452	2012	229 m	Hitachi - 5S60MC-C8	4.6	C
1774	CETUS OMURA IMO 9670781	43,532	2016	190 m	Yichang - 5S50ME-B9	4.6	C
1775	EPIC TRADER IMO 9551698	56,778	2012	190 m	Doosan - 6S50MC-C	4.6	C
1776	SAMSUN IMO 9657777	63,200	2013	200 m	Doosan - 5S60ME-C	4.6	C
1777	SPAR RIGEL IMO 9557111	58,000	2010	190 m	Doosan - 6S50MC-C	4.6	C
1778	LYRIC POET IMO 9590577	81,276	2012	229 m	MAN - 7S50MC-C	4.6	C
1779	THOR CONFIDENCE IMO 9403023	58,781	2008	190 m	MAN - 6S50MC-C	4.6	C
1780	LAGONDA IMO 9456549	55,733	2011	190 m	Wärtsilä - 6RT-flex50	4.6	C
1781	DAMON IMO 9575187	63,301	2012	200 m	Doosan - 5S60ME-C8	4.6	C
1782	GENCO HUNTER IMO 9368871	57,982	2007	190 m	MAN - 6S50MC-C	4.6	C
1783	BRIGHT IMO 9240794	50,363	2002	190 m	Kawasaki - 6S50MC-C	4.6	C
1784	NING TAI HAI IMO 9751341	63,474	2017	200 m	Hudong Heavy Machinery - 5S60ME-C8	4.6	C
1785	OBE GRANDE IMO 9615731	58,613	2012	197 m	Kawasaki - 6S50MC-C7	4.6	C
1786	KN FUTURE IMO 9558270	57,999	2013	190 m	Mitsui - 6S50MC-C	4.6	C
1787	ERNEST VINBERG IMO 9707649	63,411	2015	200 m	MAN - 5S60ME-C8	4.6	C
1788	THE GIVER IMO 9310537	75,726	2006	225 m	Mitsui - 7 S 50 MC-C	4.6	C
1789	FEDERAL INDIANA IMO 9975387	34,763	2024	200 m	—	4.6	C
1790	CRIMSON QUEEN IMO 9465174	58,140	2014	190 m	Mitsui - 6S50MC-C	4.6	C
1791	ANGELINA THE GREAT N IMO 9593725	55,768	2012	190 m	Diesel United - 6RT-flex50	4.6	C
1792	JOSCO RUNZHOU IMO 9459644	58,722	2011	197 m	MAN - 6S50MC-C	4.6	C
1793	K.RUBY IMO 9514042	55,688	2011	190 m	Wärtsilä - 6RT-flex50	4.6	C
1794	AYTEN CEBI IMO 9802243	63,913	2018	200 m	Mitsui - 6S50ME-B9	4.6	C
1795	ELIM BOUNCE IMO 9515096	61,616	2012	200 m	MAN - 6S50MC-C	4.6	C
1796	AEOLOS IMO 9670901	63,434	2015	200 m	MAN - 5S60ME-C8	4.6	C
1797	ALEXIS IMO 9609158	81,623	2012	229 m	MAN - 5S60MC-C8	4.6	C
1798	FEDERAL TIBER IMO 9644483	55,160	2013	190 m	Kawasaki - 6S50MC-C8	4.6	C
1799	ELIM COURAGE IMO 9425760	58,163	2009	190 m	MAN - 6S50MC-C	4.6	C
1800	GHARAPURI ISLAND IMO 9496147	57,978	2010	190 m	Mitsui - 6S50MC-C-MKVII	4.6	C

Page 36 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.