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)

#1,778 of 3,436 bulk carriers

CO₂ intensity

4.5 g CO₂/dwt·nm

vs segment average (4.71)

-4% 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
1751	JERA IMO 9610884	57,111	2012	190 m	STX - 6 S 50 MC-C	4.5	C
1752	JABAL SAMHAN IMO 9699294	63,658	2015	200 m	MAN - 5S60ME-C8	4.5	C
1753	CETUS SPADE IMO 9731406	43,343	2018	190 m	Yichang - 5S50ME-B9	4.5	C
1754	LIGNUM NETWORK IMO 9942811	64,171	2022	200 m	Mitsui Engineering & Shipbuilding C Ltd - Japan 6S50ME-C9-EGRBP	4.5	C
1755	ROTTERDAM PEARL V IMO 9557135	58,000	2010	190 m	Doosan - 6S50MC-C	4.5	C
1756	CETUS ORCA IMO 9670767	43,494	2015	190 m	MAN - 5S50ME-B9	4.5	C
1757	TOMINI HARMONY IMO 9718131	63,591	2015	200 m	MAN - 5S60ME-C8	4.5	C
1758	SPRING OASIS IMO 9666039	63,290	2014	200 m	Wärtsilä - 5RT-flex58T	4.5	C
1759	MAHA TANAYA IMO 9591181	83,987	2013	235 m	Hyundai - 6S60ME-C8	4.5	C
1760	EPTALOFOS IMO 9343869	92,567	2007	230 m	MAN - 7S50MC-C	4.5	C
1761	NORSE VERACRUZ IMO 9972048	40,025	2024	183 m	Mitsui - 5S50ME-C9	4.5	C
1762	BUNUN XCEL IMO 9959307	39,697	2023	180 m	Makita Corp - Japan 6G45ME-C9-HPSCR	4.5	C
1763	BEATRICE IMO 9430818	55,700	2009	190 m	Mitsui - 6S50MC-C	4.5	C
1764	EIHWAZ IMO 9729544	63,166	2015	200 m	MAN - 5S60ME-C8	4.5	C
1765	REX IMO 9575163	63,301	2012	200 m	Doosan - 5S60ME-C8	4.5	C
1766	SJ COLOMBO IMO 9478511	55,989	2010	190 m	Diesel United - 6RT-flex50	4.5	C
1767	ZEA IMO 9628087	81,425	2013	229 m	Hyundai - 6S60MC-C8	4.5	C
1768	MILIN KAMAK IMO 9841641	47,087	2020	190 m	MAN - 5G50ME-C9	4.5	C
1769	SKYFALL IMO 9724752	63,057	2016	200 m	MAN - 5G60ME-C9	4.5	C
1770	ASTRO MEROPE IMO 9700196	63,628	2015	200 m	MAN - 5S60ME-C8	4.5	C
1771	PAVIDA NAREE IMO 9649885	35,340	2018	180 m	Doosan - 5S50ME-B9	4.5	C
1772	MERCURY SKY IMO 9796949	61,569	2017	200 m	Hudong Heavy Machinery - 6S50ME-B9	4.5	C
1773	ROSTRUM AFRICA IMO 9910363	40,010	2022	180 m	Dalian Marine Diesel Works 5S50ME-C9	4.5	C
1774	HARMONY IMO 9994802	39,928	2024	180 m	MAN-B&W 5S50ME-C9	4.5	C
1775	BULK SPIRIT IMO 9355501	52,950	2009	188 m	Kawasaki - 6S50MC-C	4.5	C
1776	GUO HAI LIAN 665 IMO 9591492	75,491	2013	225 m	Wärtsilä - 5RT-flex58T	4.5	C
1777	STAR ROTTERDAM IMO 9721994	63,629	2017	200 m	MAN - 5S60ME-C8	4.5	C
1778	CAPE GRECO IMO 9481477	79,452	2011	229 m	HHI - 5S60MC-C8	4.5	C
1779	SHEERNESS IMO 9991616	40,510	2025	180 m	MAN-B&W 5S50ME-C9	4.5	C
1780	JABAL AL KAWR IMO 9732943	63,581	2014	200 m	MAN - 5S60ME-C8	4.5	C
1781	CELESTIAL BLUE IMO 9885439	61,197	2020	200 m	MAN - 6S50ME-B9	4.5	C
1782	STELLA L IMO 9500687	58,096	2012	190 m	MAN - 6S50MC-C	4.5	C
1783	OCEANLADY IMO 9641364	56,715	2013	190 m	Hudong Heavy Machinery - 6S50MC-C8	4.5	C
1784	MEDI CABOTO IMO 9806770	61,123	2017	200 m	Mitsui - 6S50ME-B9	4.5	C
1785	XIN HAI TONG 9 IMO 9741578	48,939	2015	190 m	MAN - 6S50MC-C8	4.5	C
1786	STAR APUS IMO 9698795	63,123	2014	200 m	MAN - 5G60ME-C9	4.5	C
1787	HECTOR IMO 9502635	75,200	2012	225 m	Hyundai - 5 S 60 MC-C	4.5	C
1788	SEA EAGLE IMO 9830135	40,079	2019	180 m	Yichang - 5S50ME-B9	4.5	C
1789	ROSTRUM AMERICA IMO 9910351	40,007	2022	180 m	Dalian Marine Diesel Works 5S50ME-C9	4.5	C
1790	AL WATHBA IMO 9663233	63,672	2013	200 m	MAN - 5S60ME-C8	4.5	C
1791	THOR MAGNHILD IMO 9303041	56,023	2006	190 m	Mitsui - 6S50MC-C	4.5	C
1792	VICTORIA T IMO 9817511	61,266	2017	200 m	Mitsui - 6S50ME-B9	4.5	C
1793	GLYFADA IMO 9714733	60,414	2013	200 m	MAN - 6S50ME-B9	4.5	C
1794	STAR SHANGHAI IMO 9743588	63,438	2016	200 m	DALIAN MARINE - 5S60ME-C8	4.5	C
1795	DEJIMA IMO 9860594	63,533	2019	200 m	MAN - 6S50MC-B9	4.5	C
1796	OCEAN HARVEST IMO 9747467	55,863	2016	190 m	MAN - 6S50MC-C	4.5	C
1797	HAWK S IMO 1082782	40,576	2025	180 m	MAN-B&W 5S50ME-C9	4.5	C
1798	BBG MASTER IMO 9721982	63,650	2016	200 m	MAN - 5S60ME-C8	4.5	C
1799	SIIRT IMO 9644196	63,200	2013	200 m	Doosan - 5S60ME-C8	4.5	C
1800	XIN HAI TONG 25 IMO 9632789	56,516	2012	190 m	Wärtsilä - 6RT-flex50-B	4.5	C

Page 36 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.