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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 2025. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2025)
#107 of 479 vehicle carriers
CO₂ intensity
13.7 g CO₂/dwt·nm
vs segment average (16.33)
-16% greener
B
489
vessels ranked
8.82
greenest (g CO₂/t·nm)
15.82
segment median
# Vessel Size (DWT) Built Carbon intensity — AER (g CO₂/dwt·nm) Grade
101 MORNING PILOT
IMO 9669031
22,675 2014
13.6
B
102 TOSCANA
IMO 9398333
22,157 2009
13.7
B
103 YUAN JIANG KOU
IMO 9999591
19,276 2026
13.7
B
104 MORNING CELINE
IMO 9519133
22,415 2009
13.7
B
105 TRITON LEADER
IMO 9553103
22,657 2010
13.7
B
106 HOEGH TRACER
IMO 9684990
21,983 2016
13.7
B
107 CARMEN
IMO 9505027
31,143 2011
13.7
B
108 GLOVIS SUNLIGHT
IMO 9798416
25,225 2017
13.7
B
109 AUTO ENERGY
IMO 9736377
16,990 2016
13.7
B
111 MORNING CREST
IMO 9252204
19,927 2003
13.7
B
110 BYD JINAN
IMO 9993951
25,109 2025
13.7
B
112 TANNHAUSER
IMO 9731640
24,155 2020
13.7
B
114 GOLIATH LEADER
IMO 9357315
20,958 2008
13.8
B
113 THEBEN
IMO 9722302
23,786 2016
13.8
B
115 LAKE HERMAN
IMO 9953119
19,138 2023
13.8
B
116 DAEDALUS LEADER
IMO 9426362
21,423 2009
13.8
B
117 GRANDE TIANJIN
IMO 9992660
21,610 2025
13.8
B
118 RIGEL LEADER
IMO 9604940
18,884 2012
13.8
B
119 TOREADOR
IMO 9375288
22,098 2008
13.8
B
120 PATRIOT
IMO 9316139
22,564 2006
13.8
B
121 HOEGH TARGET
IMO 9684976
22,068 2015
13.9
B
122 HAE SHIN
IMO 9053505
17,183 1994
13.9
B
124 LEO LEADER
IMO 9181558
22,733 1999
13.9
B
123 GRAND DOLPHIN
IMO 9279329
18,369 2004
13.9
B
126 LIBERTY ACE
IMO 9293650
19,106 2004
13.9
B
125 LAKE QARAOUN
IMO 9946099
19,166 2025
13.9
B
127 MORNING PEACE
IMO 9780627
22,438 2017
14.0
B
128 ARTEMIS LEADER
IMO 9355202
21,424 2008
14.0
B
129 CMA CGM MONZA
IMO 9953808
19,204 2024
14.0
B
131 PLEIADES LEADER
IMO 9426374
21,364 2009
14.0
B
130 TORINO
IMO 9398321
22,160 2009
14.0
B
132 ANJI FOREVER
IMO 1021415
24,604 2026
14.0
B
133 AUTO ECO
IMO 9736365
16,995 2016
14.0
B
134 THOR HIGHWAY
IMO 9948164
19,210 2024
14.1
B
135 AUTO ACHIEVE
IMO 9881304
12,413 2022
14.1
B
137 GEMINI LEADER
IMO 9519121
22,723 2009
14.1
B
136 CMA CGM DAYTONA
IMO 9976654
19,038 2024
14.1
B
138 RCC AMERICA
IMO 9277802
21,182 2003
14.1
B
140 APOLLON LEADER
IMO 9402706
18,758 2008
14.2
B
139 TONGALA
IMO 9605786
22,585 2012
14.2
B
141 LAKE TAZAWA
IMO 9953810
19,213 2024
14.2
B
142 MARVELOUS ACE
IMO 9293519
19,401 2006
14.2
B
143 GLORIOUS LEADER
IMO 9357298
20,999 2007
14.3
B
146 MORNING CHARLOTTE
IMO 9338694
22,362 2007
14.3
B
145 LAKE ANNECY
IMO 9946063
18,969 2023
14.3
B
144 ASIAN CAPTAIN
IMO 9158616
25,082 1998
14.3
B
147 SAIC ANJI SINCERITY
IMO 9973377
18,600 2024
14.3
B
148 LIBERTY PASSION
IMO 9777888
20,352 2017
14.4
B
149 MORNING CELESTA
IMO 9336062
21,055 2008
14.4
B
150 HARMONY LEADER
IMO 9441568
20,434 2011
14.4
B
Page 3 of 10 — 479 vessels
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.