Most Emission-Efficient General Cargos

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)

#73 of 2,380 general cargos

CO₂ intensity

4.5 g CO₂/dwt·nm

vs segment average (13.96)

-68% 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

2,429

vessels ranked

3.13

greenest (g CO₂/t·nm)

14.48

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
52	SSI ENDURANCE IMO 9932971	37,973	2022	180 m	MAN - 6S46ME-B8	4.3	A
51	MAPLE ARROW IMO 9652569	55,889	2014	190 m	Mitsui - 6S50MC-C	4.3	A
53	GREEN KOTKA IMO 9976056	68,003	2023	227 m	MAN-B&W 6S60ME-C10	4.3	A
54	HOLLY ARROW IMO 9819985	60,803	2018	200 m	Hudong Heavy Machinery - 6S50ME-B9	4.3	A
55	COSCO SHIPPING ZHUO YUE IMO 9872157	61,990	2019	202 m	DALIAN MARINE - 5G60ME-C9	4.3	A
56	ELISABETH OLDENDORFF IMO 9717656	38,600	2015	180 m	MAN - 5S50ME-B9	4.3	A
57	BAY PEARL IMO 9460801	51,703	2011	188 m	Mitsubishi - 6S50MC-C	4.3	A
58	DELOS DAWN IMO 9363675	52,224	2008	188 m	Mitsubishi - 6UEC50LSII	4.3	A
59	DEVBULK DENIZ IMO 9758301	41,500	2020	180 m	MAN - 6S50ME-B9	4.3	A
60	WANG FU IMO 9998066	61,676	2025	200 m	MAN-B&W 6G50ME-C9	4.3	A
62	ZHONG YUAN HAI YUN KAI TUO IMO 9837640	62,050	2018	202 m	MAN - 5G60ME-C9	4.4	A
61	COSCO SHIPPING FOUNTAIN IMO 9928891	61,495	2022	202 m	DALIAN MARINE - 5G60ME-C9	4.4	A
63	THOR FEARLESS IMO 9317341	54,881	2005	190 m	Kawasaki - 6S50MC-C	4.4	A
64	GREEN AANEKOSKI IMO 9976082	68,018	2023	227 m	MAN-B&W 6S60ME-C10	4.4	A
65	PROVIDANA IMO 9380788	58,022	2007	212 m	MAN - 6S60MC	4.4	A
67	BBC CERES IMO 9972490	40,600	2024	180 m	Yichang Marine Diesel Engine Co Ltd - China 5S50ME-C9-HPSCR	4.4	A
66	OKIANA IMO 9253868	57,599	2004	212 m	6S60MC	4.4	A
68	HERBERT IMO 9931551	61,762	2022	200 m	Hudong Heavy Machinery Co Ltd - China 6G50ME-C9-HPSCR	4.4	A
69	DEVBULK DAMLA IMO 9711717	37,322	2015	178 m	MAKITA - 6S46ME-B8.3	4.5	A
70	AMERICA PEARL IMO 9659751	45,556	2014	183 m	MAN - 6S50MC-C8	4.5	A
71	COSCO SHIPPING PENG BO IMO 9928920	61,575	2023	202 m	DALIAN MARINE - 5G60ME-C9	4.5	A
72	PIPIT ARROW IMO 9552898	62,980	2012	200 m	Kawasaki - 6S50MC-C	4.5	A
73	COSCO SHIPPING SINCERE IMO 9928877	61,641	2022	202 m	DALIAN MARINE - 5G60ME-C9	4.5	A
76	BBC APOLLO IMO 9972488	40,565	2023	180 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 5S50ME-C9-HPSCR	4.5	A
75	COSCO SHIPPING VISION IMO 9881677	61,942	2021	202 m	DALIAN MARINE - 5G60ME-C9	4.5	A
74	POSIDANA IMO 9371086	58,022	2008	212 m	Kawasaki - 6S60MC	4.5	A
77	GREEN RAUMA IMO 9976070	68,010	2023	227 m	MAN-B&W 6S60ME-C10	4.5	A
79	GREEN PORTOCEL IMO 9976408	64,994	2024	225 m	WinGD 6X62	4.6	A
78	ZHONG YUAN HAI YUN JIN QU IMO 9846495	62,045	2019	202 m	MAN - 5G60ME-C9	4.6	A
80	MANTA NIGAR IMO 9749843	34,391	2016	180 m	MAKITA - 6S46ME-B8.3	4.6	A
82	COSCO SHIPPING FAN RONG IMO 9928906	61,537	2022	202 m	DALIAN MARINE - 5G60ME-C9	4.6	A
81	SAGA FORTUNE IMO 9644524	56,023	2012	200 m	Diesel United - 6RT-FLEX50-B	4.6	A
83	BBC PLUTO IMO 1020459	40,459	2025	180 m	MAN-B&W 5S50ME-C9	4.6	A
84	IVS PHINDA IMO 9700940	37,720	2014	180 m	Mitsubishi - 6UEC45LSE	4.6	A
85	LUNARA IMO 9443126	33,709	2010	180 m	Mitsubishi - 6UEC45LSE	4.6	A
86	COSCO SHIPPING CHANG SHENG IMO 9928918	61,567	2022	202 m	DALIAN MARINE - 5G60ME-C9	4.6	A
87	SAGA FLORA IMO 9502348	55,807	2018	200 m	Wärtsilä - 6RT-flex50	4.6	A
88	SAGA FJORD IMO 9613862	55,596	2013	200 m	STX - 5S60ME-C8	4.7	A
89	IRVINE BAY IMO 9682928	37,920	2014	180 m	MAN - 6S46MC-C	4.7	A
90	SAGA FRIGG IMO 9613850	55,596	2013	200 m	STX - 5S60ME-C8	4.7	A
92	DEVBULK SARE IMO 9544152	40,445	2012	185 m	MAN - 6S46MC-C	4.7	A
91	POLSTEAM RUDNO IMO 9984821	37,630	2025	200 m	MAN-B&W 5S50ME-C9	4.7	A
93	SPANACO ADVENTURE IMO 9014078	47,076	1994	199 m	Sulzer - 7RTA52	4.7	A
94	COSCO SHIPPING JIN XIU IMO 9872169	62,002	2019	202 m	MAN - 5G60ME-C9	4.7	A
95	STRAIT PEARL IMO 9607576	50,630	2011	183 m	Mitsui - 6UEC50LSII	4.7	A
96	BBC SATURN IMO 9932127	40,255	2022	180 m	MAN - 5S50ME-C9	4.7	A
100	ORION IMO 9495935	51,679	2012	188 m	Mitsubishi - 6UEC50LSII	4.7	A
99	BEATRICE IMO 9865245	39,278	2019	183 m	Mitsui - 6S46ME-B8	4.7	A
98	STAR TOSCANA IMO 9452139	51,674	2012	200 m	Mitsubishi - 6UEC50LSE	4.7	A
97	SSI ENDEAVOUR IMO 9883053	37,910	2020	180 m	MAN - 5S50ME-C9	4.7	A

Page 2 of 48 — 2,380 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.