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)

#1,618 of 3,436 bulk carriers

CO₂ intensity

4.3 g CO₂/dwt·nm

vs segment average (4.71)

-8% 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
1602	AL LULU IMO 9583627	57,000	2006	190 m	Hyundai - 6S50MC-C	4.3	C
1601	ANNELIESE IMO 1015325	40,398	2024	183 m	J-ENG 6UEC42LSH-EcoD3	4.3	C
1606	GRANDE ISLAND IMO 9496214	58,110	2009	190 m	Mitsui - 6S50MC-C	4.3	C
1612	EVA PARIS IMO 9863871	63,680	2021	200 m	MAN - 6S50ME-C9 (Tier II)	4.3	C
1605	QINGHE IMO 9324631	52,450	2006	190 m	Mitsui - 6S50MC	4.3	C
1611	MTR JUPITER IMO 1015753	40,502	2025	183 m	J-ENG 6UEC42LSH-EcoD3	4.3	C
1610	ARIADNI IMO 9698305	63,155	2014	200 m	MAN - 5S60ME-C8 Tier II	4.3	C
1609	BULK INDEPENDENCE IMO 9374002	56,548	2008	190 m	Diesel United - 6S50MC-C8.1-TII	4.3	C
1604	LADY J IMO 9957610	82,000	2023	229 m	Hudong Heavy Machinery Co Ltd - China 6S60ME-C10-HPSCR	4.3	C
1607	PETROS S IMO 9490753	58,018	2010	190 m	MAN - 6S50MC-C	4.3	C
1603	PACIFIC ACTIVITY IMO 9731901	63,601	2017	200 m	Hudong Heavy Machinery - 5S60MC-C8	4.3	C
1608	SM SANTOS IMO 9842516	80,857	2020	229 m	MAN - 6S60ME-C	4.3	C
1613	APOLO IMO 9296793	77,326	2006	225 m	MAN - 5S60MC-C	4.3	C
1617	LEM GLADIOLUS IMO 9845817	64,651	2020	200 m	MAN - 7G50ME-C9	4.3	C
1616	IOLAOS IMO 9696450	63,413	2016	200 m	MAN - 5S60ME-C8	4.3	C
1615	KANAGI RIVER IMO 9972036	40,041	2024	183 m	Mitsui - 5S50ME-C9	4.3	C
1614	MOON IMO 9635690	80,505	2012	229 m	MAN - 7S50MC-C	4.3	C
1619	KIRAN MARMARA IMO 9576985	63,714	2014	200 m	MAN - 6S60MC	4.3	C
1618	EVA GLOBAL IMO 9972452	40,553	2023	180 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 5S50ME-C9-HPSCR	4.3	C
1620	INCE SOUTHWIND IMO 9969170	63,703	2023	200 m	MAN-B&W 6S50ME-B9	4.3	C
1621	PROPEL SHAKTI IMO 9640592	58,642	2012	197 m	Kawasaki - 6S50MC-C	4.3	C
1630	ADA IMO 9727156	81,841	2016	229 m	Kawasaki - 6S60ME-C8.2	4.3	C
1628	LUCKY GLORY 3 IMO 9464508	76,619	2008	225 m	MAN - 6S60MC	4.3	C
1629	BBC MERCURY IMO 9965588	39,869	2023	180 m	Makita Corp - Japan 6G45ME-C9-HPSCR	4.3	C
1625	PAN SAPPHIRE IMO 9860386	62,569	2020	200 m	Mitsui - 5S50ME-B9	4.3	C
1627	ZHENG FAN IMO 9296858	87,052	2005	229 m	Diesel United - 6RTA58T	4.3	C
1626	ASPEN TRADER IMO 9989302	40,608	2024	180 m	5S50ME-C9-HPSCR	4.3	C
1624	ELISA IMO 9730232	58,623	2016	190 m	5S60ME-C8.2-TII	4.3	C
1623	GOLDEN AMBER IMO 9458987	74,753	2017	225 m	STX - 5S60MC-C	4.3	C
1622	NEGMAR YAKO I IMO 9625463	38,674	2011	180 m	Doosan - 6S46MC-C	4.3	C
1634	MH LANGOEY IMO 1076173	63,697	2025	200 m	MAN-B&W 6G50ME-C9	4.3	C
1636	MARINE GLORY IMO 9606754	114,047	2014	250 m	HHI - 7S60MC-C7	4.3	C
1633	CS HANGZHOU IMO 9830070	81,600	2014	229 m	Hudong Heavy Machinery - 6S60ME	4.3	C
1641	BUFFLEHEAD IMO 9926063	39,982	2022	183 m	MAKITA CORPORATION	4.3	C
1640	ATALANDI IMO 9658886	77,528	2014	225 m	MAN - 5S60MC	4.3	C
1637	GOOD WISH IMO 9502623	75,018	2011	225 m	Hyundai - 5 S 60 MC-C	4.3	C
1632	THOR CHAICHANA IMO 9638501	58,605	2013	197 m	Kawasaki - 6S50MC-C8	4.3	C
1639	KARPATHOS DAWN IMO 9427342	56,700	2010	190 m	STX - 6 S 50 MC-C	4.3	C
1638	EASTERN ZINNIA IMO 9624093	81,792	2013	229 m	MAN - 5S60MC-C8	4.3	C
1631	KATJA OLDENDORFF IMO 9867554	81,297	2020	229 m	Yichang - 6S60ME-C8 (Tier II)	4.3	C
1635	KING LAN IMO 9216406	73,926	2001	225 m	SHANGHAI SHIPYARD DIESEL DIVISION 5 S 60 MC	4.3	C
1650	ROSTRUM OPTIMA IMO 9941635	40,030	2024	180 m	MAN - 5S50ME-C9	4.3	C
1649	SOUTHERN HAWK IMO 9858527	80,681	2019	229 m	Mitsui - 6S60ME-C8	4.3	C
1648	JABAL HARIM IMO 9722053	63,277	2016	200 m	DALIAN MARINE - 5S60ME-C8.2 (Tier II)	4.3	C
1647	EARTH HARMONY IMO 9832470	36,908	2020	180 m	MAN - 5S50MC-C8	4.3	C
1646	SACHI IMO 9826457	64,499	2020	200 m	Mitsui - 6S50ME-B9	4.3	C
1645	DSI POLARIS IMO 9738349	60,404	2018	200 m	Mitsui - 6S50ME-B9	4.3	C
1644	FENG HUI HAI IMO 9727649	63,260	2017	200 m	Hudong Heavy Machinery - 5S60ME-C8	4.3	C
1643	CENTURION BUYO IMO 9975208	40,503	2024	183 m	J-ENG 6UEC42LSH-EcoD3	4.3	C
1642	VICTORIA MAY IMO 9730220	58,634	2016	190 m	MAN - 5S60ME-C	4.3	C

Page 33 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.