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 2024. Lower is greener. Pick a segment and size class to see the greenest vessels first.
| # | Vessel | Size (DWT) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 1101 |
BBC EDGE
IMO 9407598
|
10,323 | 2009 |
17.6
|
E |
| 1102 |
BOCS VISION
IMO 9359961
|
12,584 | 2008 |
17.6
|
E |
| 1103 |
JSP VENTO
IMO 9570656
|
7,930 | 2011 |
17.6
|
E |
| 1104 |
CDRY BROWN
IMO 9469302
|
8,537 | 2010 |
17.8
|
E |
| 1105 |
GRIGORY MALOV
IMO 8986365
|
6,098 | 1986 |
17.8
|
E |
| 1106 |
SEA LEADER
IMO 9363998
|
6,355 | 2007 |
17.8
|
E |
| 1107 |
AK HAMZA
IMO 9338125
|
7,600 | 2005 |
17.8
|
E |
| 1108 |
SUNNY LYNN
IMO 9124926
|
8,292 | 1995 |
17.8
|
E |
| 1109 |
DIEZEBORG
IMO 9225586
|
8,819 | 2000 |
17.8
|
E |
| 1110 |
MANISA KATE / LOENERBORG
IMO 9421099
|
8,111 | 2008 |
17.9
|
E |
| 1111 |
PALMGRACHT
IMO 9424558
|
19,413 | 2010 |
17.9
|
E |
| 1112 |
FWN PERFORMER
IMO 9770701
|
10,620 | 2017 |
17.9
|
E |
| 1113 |
BURHAN DIZMAN
IMO 9381809
|
7,728 | 2007 |
17.9
|
E |
| 1114 |
BBC TOPAZ
IMO 9506734
|
14,288 | 2010 |
17.9
|
E |
| 1115 |
DAIANA
IMO 9610509
|
8,546 | 2011 |
17.9
|
E |
| 1116 |
ROYAL I
IMO 9347633
|
11,169 | 2007 |
18.0
|
E |
| 1117 |
MANISA BELLA / LENNEBORG
IMO 9421075
|
8,117 | 2008 |
18.1
|
E |
| 1118 |
LAPPLAND
IMO 9505132
|
6,500 | 2020 |
18.1
|
E |
| 1119 |
VASTERBOTTEN
IMO 9436226
|
6,805 | 2008 |
18.1
|
E |
| 1120 |
WAALBORG
IMO 9505546
|
9,611 | 2010 |
18.1
|
E |
| 1121 |
ARINDA JOY
IMO 9512422
|
8,072 | 2009 |
18.2
|
E |
| 1122 |
LEONID ZAYAKIN
IMO 8972259
|
6,098 | 1986 |
18.3
|
E |
| 1123 |
SPANACO PROGRESS
IMO 9306433
|
7,601 | 2007 |
18.3
|
E |
| 1124 |
JOY X
IMO 9428774
|
7,800 | 2007 |
18.4
|
E |
| 1125 |
SIDER RODI
IMO 9522001
|
8,520 | 2010 |
18.4
|
E |
| 1126 |
BEAUTRITON
IMO 9428669
|
7,210 | 2009 |
18.5
|
E |
| 1127 |
AMIR JOY
IMO 9205706
|
9,791 | 2000 |
18.5
|
E |
| 1128 |
BOCS SPIRIT
IMO 9359959
|
12,576 | 2008 |
18.5
|
E |
| 1129 |
JOY LINE
IMO 9370094
|
14,376 | 2007 |
18.5
|
E |
| 1130 |
FINNLAND
IMO 9301598
|
7,099 | 2006 |
18.5
|
E |
| 1131 |
ENDURANCE
IMO 9647318
|
7,825 | 2012 |
18.6
|
E |
| 1132 |
AK AMBITION
IMO 9306421
|
7,600 | 2006 |
18.6
|
E |
| 1133 |
MOHSEN
IMO 8703270
|
7,443 | 1987 |
18.6
|
E |
| 1134 |
ASG PORTOFINO
IMO 9229087
|
7,796 | 2002 |
18.7
|
E |
| 1135 |
MOLENGRACHT
IMO 9571533
|
12,196 | 2012 |
18.8
|
E |
| 1136 |
BBC DESTINY
IMO 9347839
|
8,834 | 2006 |
18.8
|
E |
| 1137 |
HERBEIRA
IMO 9439216
|
7,796 | 2008 |
18.8
|
E |
| 1138 |
MAJ RICHARD WINTERS
IMO 9210309
|
7,725 | 2000 |
18.9
|
E |
| 1139 |
MISSOURIBORG
IMO 9228978
|
9,687 | 2000 |
18.9
|
E |
| 1140 |
MADDOX
IMO 8908844
|
16,883 | 1995 |
18.9
|
E |
| 1141 |
DONA BLE
IMO 9142540
|
9,221 | 1997 |
18.9
|
E |
| 1142 |
ALTO
IMO 9277333
|
7,701 | 2004 |
19.0
|
E |
| 1143 |
MSC ADA F
IMO 9190119
|
14,000 | 2000 |
19.0
|
E |
| 1144 |
WISLABORG
IMO 9505560
|
9,698 | 2011 |
19.1
|
E |
| 1145 |
SEELAND
IMO 9301603
|
7,064 | 2006 |
19.1
|
E |
| 1146 |
MANISA GRETA
IMO 9391024
|
8,054 | 2007 |
19.1
|
E |
| 1147 |
NYLAND
IMO 9436240
|
6,805 | 2009 |
19.2
|
E |
| 1148 |
BIGLIFT BARENTSZ
IMO 9710464
|
20,098 | 2016 |
19.3
|
E |
| 1149 |
DANITA
IMO 9341108
|
7,018 | 2005 |
19.3
|
E |
| 1150 |
ALAND
IMO 9350783
|
7,056 | 2007 |
19.5
|
E |
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.
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.