Most Emission-Efficient Vehicle 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 2024. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2024)

#84 of 441 vehicle carriers

CO₂ intensity

13.7 g CO₂/dwt·nm

vs segment average (16.92)

-19% 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

450

vessels ranked

3.39

greenest (g CO₂/t·nm)

16.24

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
51	TURQUOISE ACE IMO 9969132	18,439	2024	200 m	MAN-B&W 6S60ME-C10-GI	12.9	A
52	TANNHAUSER IMO 9731640	24,155	2020	200 m	MAN - 8S60ME-C8	12.9	A
53	DON QUIJOTE IMO 9138525	28,142	1998	228 m	Korea Heavy Industries & Constr Co Ltd (HANJUNG) - South Korea 8S60MC	12.9	A
54	HOEGH LONDON IMO 9342205	27,100	2008	229 m	MAN - 7S60MC	12.9	A
55	THERMOPYLAE IMO 9702443	23,786	2015	200 m	MAN - 8S60ME-C8	12.9	A
56	GEMINI LEADER IMO 9519121	22,723	2009	200 m	Mitsubishi - 8UEC60LSII	13.0	A
57	HOEGH SEOUL IMO 9285495	27,178	2004	229 m	HSD ENGINE CO. LTD. 7S60MC	13.0	A
59	DON PASQUALE IMO 9138513	28,142	1997	228 m	Korea Heavy Industries & Constr Co Ltd (HANJUNG) - South Korea 8S60MC	13.0	A
58	TITUS IMO 9700512	23,889	2018	200 m	MAN - 8S60ME-C8	13.0	A
61	SIEM CONFUCIUS IMO 9841017	19,183	2020	200 m	MAN - 7S60ME-C10	13.0	A
60	LAKE HERMAN IMO 9953119	19,138	2023	200 m	WinGD 7X62DF	13.0	A
62	MORNING CARINA IMO 9338709	22,755	2007	200 m	Mitsubishi - 8UEC60LSII	13.0	A
63	MORNING CECILIE IMO 9477830	22,699	2008	200 m	Mitsubishi - 8UEC60LSII	13.1	A
64	CRUX LEADER IMO 9177428	21,523	1998	200 m	Mitsubishi - 8UEC60LS	13.1	A
65	HOEGH SHANGHAI IMO 9312482	27,178	2007	229 m	MAN - 7S60MC	13.1	A
66	ARC DEFENDER IMO 9375264	22,144	2008	200 m	Mitsubishi - 7UEC60LSII	13.2	A
67	TRAVIATA IMO 9700524	23,889	2019	200 m	MAN - 8S60ME-C8	13.2	A
68	MORNING LINDA IMO 9383106	28,061	2008	232 m	MAN - 7S60MC-C	13.3	A
69	BOHEME IMO 9176565	28,360	1999	228 m	MAN - 8S60MC	13.3	A
70	HOEGH TARGET IMO 9684976	22,068	2015	200 m	MAN - 6S60ME-C	13.4	A
71	MORNING LYNN IMO 9383429	28,092	2009	232 m	MAN - 7S60MC-C	13.4	A
72	SUMIRE LEADER IMO 9933999	19,476	2023	200 m	WinGD 7X62DF	13.4	A
73	CMA CGM INDIANAPOLIS IMO 9953717	19,157	2023	200 m	MAN-B&W 7S60ME-C10-GI	13.5	A
74	HAE SHIN IMO 9053505	17,183	1994	196 m	Mitsubishi - 7UEC60LA	13.5	A
75	AUTO ECO IMO 9736365	16,995	2016	181 m	Kawasaki - 8S50ME-C8.2-GI	13.5	A
76	HOEGH JEDDAH IMO 9673381	20,407	2014	200 m	MAN - 5S60ME-C	13.6	A
77	HOEGH TRAPPER IMO 9706918	21,856	2016	200 m	MAN - 6S60ME-C	13.6	A
78	ASIAN CAPTAIN IMO 9158616	25,082	1998	229 m	Hyundai - 7 S 60 MC	13.6	A
79	TORTUGAS IMO 9319765	22,271	2006	200 m	Mitsubishi - 7UEC60LSII	13.6	A
80	PLATINUM RAY IMO 9210438	21,400	2000	200 m	Sulzer - 7RTA62U	13.6	A
81	DIONE LEADER IMO 9561954	21,111	2013	200 m	Mitsubishi - 7S60MC-C	13.6	A
82	ATLAS LEADER IMO 9531739	21,323	2010	200 m	Mitsubishi - 8UEC60LSII	13.7	A
83	HOEGH JACKSONVILLE IMO 9673379	20,578	2014	200 m	MAN - 5S60ME-C	13.7	A
84	MORNING CAROLINE IMO 9338723	22,717	2008	200 m	Mitsubishi - 8UEC60LSII	13.7	A
85	HOEGH TRAVELLER IMO 9710737	21,918	2016	200 m	Hyundai - 6S60ME-C	13.7	A
87	TONGALA IMO 9605786	22,585	2012	200 m	Mitsubishi - 7UEC60LSII	13.8	A
86	CRONUS LEADER IMO 9464455	20,096	2008	200 m	Mitsubishi - 8UEC60LSII	13.8	A
88	ASIAN MAJESTY IMO 9203576	25,818	1999	200 m	Hyundai - 7 S 60 MC	13.8	A
89	HOEGH TRACER IMO 9684990	21,983	2016	200 m	MAN - 6S60ME-C	13.8	A
91	ORION LEADER IMO 9182289	21,526	1999	200 m	Mitsubishi - 8UEC60LS	13.8	B
90	HERCULES LEADER IMO 9531753	21,385	2011	200 m	Mitsubishi - 8UEC60LSII	13.8	B
92	TOREADOR IMO 9375288	22,098	2008	200 m	Mitsubishi - 7UEC60LSII	13.9	B
94	MORNING CHARLOTTE IMO 9338694	22,362	2007	200 m	Mitsubishi - 8UEC60LSII	14.0	B
93	CMA CGM SILVERSTONE IMO 9953793	19,138	2024	200 m	MAN-B&W 7S60ME-C10-GI	14.0	B
95	WILD ROSE LEADER IMO 9925370	19,222	2023	200 m	WinGD 7X62DF	14.1	B
96	RCC EUROPE IMO 9391593	21,000	2009	200 m	MAN - 7S60ME-C	14.1	B
98	PEONY LEADER IMO 9985370	19,393	2025	200 m	MAN-B&W 6S60ME-C10-GI	14.1	B
97	ASTERIA LEADER IMO 9531741	21,349	2010	200 m	Mitsubishi - 8UEC60LSII	14.1	B
99	AQUARIUS ACE IMO 9150339	14,353	1998	175 m	Mitsubishi - 8UEC52LA	14.1	B
100	AUTO ACHIEVE IMO 9881304	12,413	2022	169 m	Hudong Heavy Machinery Co Ltd - China 6RT-flex50DF	14.1	B

Page 2 of 9 — 441 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 2024 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.