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)

#1,560 of 3,436 bulk carriers

CO₂ intensity

4.2 g CO₂/dwt·nm

vs segment average (4.71)

-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

3,507

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
1551	STAR BETTY IMO 9589683	81,168	2011	229 m	Hyundai - 6S60MC-C	4.2	C
1550	STAR HONG KONG IMO 9743590	63,472	2016	200 m	DALIAN MARINE - 5S60ME-C8	4.2	C
1559	STAR VANCOUVER IMO 9855850	63,614	2020	200 m	DALIAN MARINE - 5S60ME-C8	4.2	C
1558	AMIS TREASURE IMO 9865362	61,125	2020	200 m	MAN - 6S50ME-B9	4.2	C
1557	LIBERTY ISLAND IMO 9520986	58,032	2012	190 m	Mitsui - 7 S 50 MC-C	4.2	C
1556	BBG BRIGHT IMO 9598177	82,043	2012	229 m	Dalian 5S60MC-C	4.2	C
1555	KENNADI IMO 9703576	63,262	2016	200 m	MAN - 5S60ME-C8	4.2	C
1554	GREAT FAITH IMO 9792905	38,629	2018	180 m	Wärtsilä - 5RT-flex50D	4.2	C
1553	LIGNUM WEB IMO 9973054	42,540	2023	183 m	MAN - 5S50ME-C9	4.2	C
1561	XIN HAI TONG 61 IMO 9600839	57,000	2010	190 m	Hyundai - 6S50MC-C	4.2	C
1560	COLUMBIA IMO 9423530	58,701	2009	190 m	Mitsui - 6S50MC-C	4.2	C
1564	BELHAVEN IMO 9811945	63,430	2017	200 m	Mitsui - 6S50MC-B9	4.2	C
1569	DESERT LEOPARD IMO 1018016	63,569	2025	200 m	MAN-B&W 6G50ME-C9	4.2	C
1563	TIGER JILIN IMO 9712216	63,415	2015	200 m	MAN - 5S60ME-C8	4.2	C
1570	SANTA MARIA IMO 9675779	61,323	2014	200 m	Hitachi - 6S50MC-C-8	4.2	C
1562	BULK PATIENCE IMO 9764063	57,679	2016	190 m	Mitsui - 6S50MC-C	4.2	C
1567	HARMONY IMO 9402017	54,958	2010	190 m	Kawasaki - 6S50MC-C	4.2	C
1566	ANGLO JESSICA IMO 9490480	114,664	2006	255 m	MAN - 6S60MC-C	4.2	C
1565	DREAM SKY IMO 9839076	63,480	2019	200 m	Hitachi - 6S50ME-B9	4.2	C
1568	PEARL ETERNITY IMO 9950416	63,810	2022	200 m	MAN - 6S50ME-C9	4.2	C
1572	RED AZALEA IMO 9727417	61,299	2015	200 m	MAN - 6S50ME-B9	4.3	C
1571	CARAVOS TRIUMPH IMO 9584310	81,664	2012	229 m	MAN - 6S60MC-CMK8.1 (tier II)	4.3	C
1576	ODYSSEUS N IMO 9490442	79,642	2011	229 m	Hyundai - 7S50MC-C	4.3	C
1578	CORAL VI IMO 9464405	76,596	2008	225 m	Mitsui - 6S60MC	4.3	C
1575	BELISLAND IMO 9698197	61,252	2016	200 m	MAN - 6S50ME-B9	4.3	C
1579	VENEZIA IMO 9799628	60,388	2017	200 m	Mitsui - 6S50ME-B9.3	4.3	C
1574	INDIGO BREEZE IMO 9760160	60,430	2017	200 m	Mitsui - 6S50ME-B9	4.3	C
1573	GRECO LIBERO IMO 9713387	63,320	2015	200 m	MAN - 5S60ME-C8	4.3	C
1577	ASTRO REGULUS IMO 9712979	60,417	2015	200 m	Mitsui - 6S50ME-B9	4.3	C
1585	NIGHTINGALE ISLAND IMO 9705287	61,587	2013	200 m	MAN - 6S50ME-B9	4.3	C
1580	GOLDEN PEARL IMO 9470375	74,300	2013	225 m	MAN - 5S60MC-CMKVII	4.3	C
1582	VELOS JASPER IMO 9582491	82,030	2012	229 m	MAN - 6S60MC-C	4.3	C
1584	APOLLON IMO 9646663	75,613	2017	225 m	Wärtsilä - 5RT-flex58T	4.3	C
1583	GOODWYN ISLAND IMO 9802308	63,963	2015	200 m	Mitsui - 6S50ME-B9	4.3	C
1581	NADINE V IMO 9512563	93,000	2011	235 m	DALIAN MARINE - 6S60MC	4.3	C
1590	NING TAI HAI IMO 9751341	63,474	2017	200 m	Hudong Heavy Machinery - 5S60ME-C8	4.3	C
1588	STAR TEMBU IMO 9497579	115,259	2011	255 m	Hyundai - 6S60MC-C	4.3	C
1589	GEORGIA S IMO 9502647	75,081	2011	225 m	Hyundai - 5 S 60 MC-C	4.3	C
1587	MARIA IMO 9698329	63,153	2015	200 m	MAN - 5S60ME-C8 Tier II	4.3	C
1586	DISCOVERY BAY IMO 9737125	58,112	2016	190 m	MAN - 6S50MC-C	4.3	C
1594	PRINCESS MARIA IMO 9483188	55,517	2009	188 m	MAN - 6S50MC-C	4.3	C
1599	FJELD FREIA IMO 9464780	80,333	2011	229 m	MAN - 7S50MC-C	4.3	C
1598	MAGIC SEAS IMO 9736169	63,301	2016	200 m	Hudong Heavy Machinery - 5S60ME-C8 Tier II	4.3	C
1597	FASSA IMO 9313503	55,447	2006	190 m	DALIAN MARINE - 6S50MC-C	4.3	C
1596	SSI DAUNTLESS IMO 9637428	57,200	2013	190 m	STX - 6 S 50 MC-C	4.3	C
1595	CLIPPER BARI-STAR IMO 9792711	37,976	2023	180 m	MAN - 11G95ME-C9	4.3	C
1593	CL MAOMING IMO 9977361	64,733	2024	200 m	MAN-B&W 6S50ME-C9	4.3	C
1592	TRAPEZITZA IMO 9968499	45,189	2024	190 m	MAN-B&W 5G50ME-C9	4.3	C
1591	EQUINOX DREAM IMO 9503964	58,680	2011	197 m	MAN - 6S50MC-C	4.3	C
1600	PACIFIC ACTIVITY IMO 9731901	63,601	2017	200 m	Hudong Heavy Machinery - 5S60MC-C8	4.3	C

Page 32 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.