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)

#1,651 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
1657	QING YUN SHAN IMO 9741516	63,441	2016	200 m	MAN - 5S60ME-C8	4.3	C
1656	BEGONIA IMO 9919670	61,102	2022	200 m	MAN - 6S50ME-B9	4.3	C
1658	YANGTZE SELINDA IMO 9330812	76,499	2007	225 m	Hudong Heavy Machinery - 5S60MC	4.3	C
1655	REIWA IMO 9740902	60,475	2016	200 m	MAN - 6S50MC-C	4.3	C
1659	ANTE TOPIC IMO 9737072	60,155	2017	200 m	Mitsui - 6S50ME-B9	4.3	C
1654	TOMINI FELICITY IMO 9831799	63,601	2020	200 m	MAN - 5S60ME-C8	4.3	C
1653	DESERT SEEKER IMO 9899208	61,000	2019	200 m	MAN - 7G50ME-C9	4.3	C
1652	FENG XIU HAI IMO 9747508	63,408	2016	200 m	Hudong Heavy Machinery - 5S60ME-C8	4.3	C
1651	PATRICIA V IMO 9453054	75,354	2010	225 m	MAN - 5S60MC-C	4.3	C
1660	DRAFTSLAYER IMO 9662318	66,622	2014	200 m	Mitsui - 7S50ME-B9	4.3	C
1661	ETG SOUTHERN CROSS IMO 9888015	63,482	2021	200 m	MAN - 6S50ME-C9	4.3	C
1665	LETO IMO 9696424	63,800	2015	200 m	MAN - 5S60ME-C8	4.3	C
1664	BALTIC MANTIS IMO 9729489	64,000	2015	200 m	MAN - 5S60ME-C8	4.3	C
1662	CELINA IMO 9591428	79,800	2014	229 m	Hyundai - 7S50MC-C8.1	4.3	C
1669	RC SPRING IMO 9562049	93,069	2012	229 m	MAN - 6S50MC	4.3	C
1668	ALEXIS IMO 9609158	81,623	2012	229 m	MAN - 5S60MC-C8	4.3	C
1667	MAINA IMO 9699892	63,280	2016	200 m	MAN - 5S60ME-C8 Tier II	4.3	C
1666	SANTA VENERA IMO 9977971	42,823	2024	180 m	MAN-B&W 5S50ME-C9	4.3	C
1663	BULGARIA IMO 9968475	45,174	2024	190 m	MAN-B&W 5G50ME-C9	4.3	C
1670	JENS OLDENDORFF IMO 9852028	61,139	2015	200 m	MAN - 6S50ME-B9	4.4	C
1671	HARLEQUIN IMO 9979101	40,636	2023	183 m	MAN-B&W 6G45ME-C9	4.4	C
1673	LORENZO IMO 9748124	61,250	2016	200 m	Mitsui - 6S50MC-C8	4.4	C
1672	PALONA IMO 9667112	81,676	2014	229 m	CSSC - 6S60ME-C8	4.4	C
1677	EGRET RIVER IMO 9708978	64,012	2017	200 m	Mitsui - 6S60ME-B9	4.4	C
1676	VENUS SKY IMO 9796951	61,588	2017	200 m	Hudong Heavy Machinery - 6S50ME-B9	4.4	C
1675	ULTRA LANIN IMO 9984493	40,622	2024	183 m	J-ENG 6UEC42LSH-EcoD3	4.4	C
1674	MH SANDEFJORD IMO 9950442	63,145	2023	200 m	MAN - 6S80ME-C9	4.4	C
1680	SUNRISE JADE IMO 9732955	63,244	2015	200 m	Doosan - 5S60ME-C8	4.4	C
1679	KASHING IMO 9860295	37,440	2021	180 m	Kawasaki - 5S50MC-C8	4.4	C
1681	ZUHAYR IMO 9317169	52,454	2007	190 m	Mitsui - 6S50MC	4.4	C
1678	FENG HE HAI IMO 9747522	63,244	2016	200 m	Hudong Heavy Machinery - 5S60ME-C8	4.4	C
1684	BELFORCE IMO 9911678	61,224	2021	200 m	Hudong Heavy Machinery - 6S50ME-B9	4.4	C
1683	UNION ODYSSEY IMO 9644201	63,200	2013	200 m	Doosan - 5S60ME-C8	4.4	C
1682	ARAUCARIA IMO 9882994	38,026	2020	180 m	Mitsui - 6S46ME-B8	4.4	C
1687	TUO FU 6 IMO 9640671	81,588	2013	229 m	Wärtsilä - 5RT-flex58T	4.4	C
1686	BULK PRIDE IMO 9440916	58,749	2008	190 m	Mitsui - 7 S 50 MC-C	4.4	C
1685	ARCTURUS IMO 9221334	76,397	2001	225 m	Mitsui - 6S60MC	4.4	C
1691	TZAREVETZ IMO 9968504	45,210	2024	190 m	MAN-B&W 5G50ME-C9	4.4	C
1692	MERCURY ISLAND IMO 1017543	64,095	2024	200 m	MAN-B&W 6S50ME-C9	4.4	C
1690	UNITY N IMO 9490466	79,642	2011	229 m	Hyundai - 7 S 50 MC-C 7	4.4	C
1689	BELFOREST IMO 9698185	61,252	2015	200 m	MAN - 6S50MC-C8	4.4	C
1688	GENCO WASP IMO 9722015	63,389	2015	200 m	MAN - 5S60ME-C8	4.4	C
1695	ULTRA SAN PEDRO IMO 1036123	40,636	2025	183 m	Japan Engine Corporation	4.4	C
1694	BBG LEADER IMO 9704843	63,241	2015	200 m	MAN - 5G60ME-C9	4.4	C
1693	NORVIC SINGAPORE IMO 9958341	39,738	2023	180 m	Makita Corp - Japan 6G45ME-C9-HPSCR	4.4	C
1700	ZHENG RUN IMO 9593816	81,822	2013	229 m	MAN - 5S60ME-C8	4.4	C
1699	STAR FAIRFIELD IMO 9575230	63,301	2013	200 m	Hudong Heavy Machinery - 5S60ME-C8	4.4	C
1698	TRITON IMO 9642356	75,009	2012	225 m	Hyundai - 5 S 60 MC-C	4.4	C
1697	SV ARISTA IMO 9566564	61,649	2011	200 m	Kawasaki - 6S50MC-C8.2	4.4	C
1696	THOR MENELAUS IMO 9303924	55,710	2006	190 m	Mitsubishi - 6S50MC-C	4.4	C

Page 34 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.