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)

#1,568 of 3,531 bulk carriers

CO₂ intensity

4.4 g CO₂/dwt·nm

vs segment average (4.87)

-10% 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
1554	SEABISCUIT IMO 9619787	82,624	2014	229 m	MAN - 7S50MC-C	4.3	C
1553	SELENA IMO 9853515	63,464	2020	200 m	MAN - 6S50ME-B9	4.3	C
1555	THOR CALIBER IMO 9440928	58,732	2008	190 m	MAN - 6S50MC-C	4.3	C
1552	BORDEAUX IMO 9483229	55,621	2011	188 m	MAN - 6S50MC-C	4.3	C
1551	YUAN HANG CAI FU IMO 9580481	76,037	2012	225 m	MAN - 5S60MC-C8	4.3	C
1558	ADAM I IMO 9469508	79,775	2010	229 m	Wärtsilä - 7RT-flex50-B	4.4	C
1557	CATHERINE IMO 9975193	40,544	2024	183 m	J-ENG 6UEC42LSH-EcoD3	4.4	C
1559	NEFELI IMO 9696462	63,466	2016	200 m	Doosan - 5S60ME-C8	4.4	C
1556	XIN HAI IMO 9500950	75,380	2012	225 m	Hudong Heavy Machinery - 5S60MC	4.4	C
1560	GREAT HAN IMO 9766920	64,793	2017	200 m	Kawasaki - 6G50ME-B9	4.4	C
1567	MAPLE UNITY IMO 9605011	61,438	2012	200 m	Mitsui - 6S50MC-C8	4.4	C
1566	EL COMINO IMO 9624378	61,465	2012	200 m	Mitsui - 6S50MC-C	4.4	C
1565	JABAL AL KAWR IMO 9732943	63,581	2014	200 m	MAN - 5S60ME-C8	4.4	C
1564	LAS PALMAS IMO 9916290	63,576	2021	200 m	Hyundai - 6G50ME-C9	4.4	C
1563	MADISON EAGLE IMO 9575278	63,301	2013	200 m	Hyundai - 5S60ME-C8 (Tier II)	4.4	C
1562	FAIRFIELD EAGLE IMO 9575230	63,301	2013	200 m	Hudong Heavy Machinery - 5S60ME-C8	4.4	C
1561	LU XIANG IMO 9407524	55,429	2009	190 m	MAN - 6S50MC-C	4.4	C
1570	TOMINI UNITY IMO 9718167	63,590	2017	200 m	Yichang - 5S60ME-C8	4.4	C
1569	KYTHIRA I IMO 9590046	81,444	2011	229 m	MAN - 6S60MC-C	4.4	C
1568	ROSTRUM IMO 9771030	63,018	2021	200 m	Doosan - 5G60ME-C9	4.4	C
1571	VEZHEN IMO 9937270	32,196	2022	190 m	Dalian Marine Diesel Works 5G45ME-C9-ISCR	4.4	C
1573	ATHINA CARRAS IMO 9592719	82,057	2012	229 m	MAN - 6S60MC-C8	4.4	C
1572	GW MATHILDE IMO 9874650	63,592	2020	200 m	MAN - 5S60ME-C8	4.4	C
1578	FENG DE HAI IMO 9727637	63,355	2015	200 m	MAN - 5S60MC-C8	4.4	C
1577	WARRIOR IMO 1014838	40,053	2024	183 m	J-ENG 6UEC42LSH-EcoD3	4.4	C
1579	KOUTALIANOS IMO 9332016	92,710	2007	230 m	STX - 7 S 50 MC-C	4.4	C
1576	TOMINI LIBERTY IMO 9718179	63,511	2018	200 m	Yichang - 5S60ME-C8	4.4	C
1575	STALWART IMO 9593476	93,168	2011	229 m	Doosan - 6S60MC-C MK7	4.4	C
1574	SSI MAJESTY IMO 9478913	55,694	2010	190 m	Mitsui - 6S50MC-C	4.4	C
1581	SENORITA IMO 9284257	56,029	2005	190 m	Mitsui - 6S50MC-C	4.4	C
1583	ST GREG IMO 9596179	57,949	2013	190 m	MAN - 6S50MC-C	4.4	C
1580	FEDERAL PRIME IMO 9950624	42,696	2023	183 m	MAN-B&W 5S50ME-C9	4.4	C
1586	OCEAN PERA IMO 9712955	55,837	2015	190 m	Mitsui - 6S50MC-B9.3	4.4	C
1585	HONG YUAN IMO 9500883	76,573	2009	225 m	Hudong Heavy Machinery - 5S60MC	4.4	C
1584	POSEIDON.GR IMO 9760067	60,370	2013	200 m	Mitsui - 6S50ME-B9	4.4	C
1591	KIRAN AUSTRALIA IMO 9576961	63,517	2013	200 m	MAN - 6S60MC	4.4	C
1590	PEDHOULAS MERCHANT IMO 9279800	82,214	2006	229 m	Mitsui - 6S60MC	4.4	C
1589	RED AZALEA IMO 9727417	61,299	2015	200 m	MAN - 6S50ME-B9	4.4	C
1588	HECTOR IMO 9502635	75,200	2012	225 m	Hyundai - 5 S 60 MC-C	4.4	C
1587	GENESIS IMO 9632947	81,305	2012	229 m	Hyundai - 6S60MC-C8	4.4	C
1582	MAGIC L IMO 9318591	73,593	2007	225 m	Hudong Heavy Machinery - 5S60MC MK6	4.4	C
1600	MILAS IMO 9279379	50,341	2004	190 m	Kawasaki - 6S35MC-C	4.4	C
1599	AMIS WISDOM I IMO 9426764	61,611	2010	200 m	Kawasaki - 6S50MC-C	4.4	C
1598	NORD TOKYO IMO 9959448	40,024	2023	183 m	Mitsui - 5S50ME-C9	4.4	C
1597	STEFANOS T IMO 9583744	80,499	2011	229 m	Hyundai - 7S50MC-C	4.4	C
1596	SSI GLORIOUS IMO 9595955	56,733	2012	190 m	Doosan - 6S50MC-C7 Tier II	4.4	C
1595	CHOLA VIRTUE IMO 9267601	76,610	2003	225 m	Mitsui - MITSUI MAN B&AMP;W 6S60MC	4.4	C
1594	CONTESSA IMO 9610119	81,383	2013	225 m	Kawasaki - 5S60MC-C7	4.4	C
1593	BALTIC MANTIS IMO 9729489	64,000	2015	200 m	MAN - 5S60ME-C8	4.4	C
1592	MAGIC PLUTO IMO 9651280	74,940	2013	225 m	MAN - 7S50MC-C	4.4	C

Page 32 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.