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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.

Segment rank (2024)
#1,161 of 1,190 general cargos
CO₂ intensity
20.1 g CO₂/dwt·nm
vs segment average (10.91)
+84% higher
E
1,215
vessels ranked
3.23
greenest (g CO₂/t·nm)
11.21
segment median
# Vessel Size (DWT) Built Carbon intensity — AER (g CO₂/dwt·nm) Grade
1151 PRETTY NELLY
IMO 8872801
7,158 1994
19.5
E
1152 BENIGANE
IMO 9455600
11,818 2008
19.5
E
1153 ST. SOFIA
IMO 9419008
16,577 2011
19.6
E
1154 GREENPOLE
IMO 9570620
7,984 2010
19.7
E
1155 LADY KHADIJA
IMO 8918734
7,177 1996
19.7
E
1156 GRINNA
IMO 9318955
7,136 2004
19.7
E
1157 BBC VERMONT
IMO 9357236
12,864 2008
19.8
E
1158 SIDER MONICA
IMO 9432517
8,520 2009
19.8
E
1159 DORADO PLUS
IMO 9447782
6,933 2007
20.0
E
1160 MANISA CAMILLA
IMO 9362669
8,098 2006
20.1
E
1161 AMINAH STAR
IMO 8919879
7,912 1992
20.1
E
1162 FEMBRIA
IMO 9350771
7,064 2006
20.1
E
1163 BALTIC WIND
IMO 9248552
16,558 2004
20.2
E
1164 SEA SPRINTER
IMO 9364019
6,355 2007
20.2
E
1165 LUCKY VOYAGER
IMO 9393632
37,317 2009
20.4
E
1166 CENTURY MAS
IMO 9253260
8,077 2001
20.5
E
1167 CS CIHAN
IMO 9045704
7,068 2007
20.6
E
1168 SNAPPER
IMO 9381407
7,739 2008
20.7
E
1169 ROZIE 7
IMO 8121020
7,752 1982
20.8
E
1170 BBC KIMBERLEY
IMO 9407586
10,323 2009
20.9
E
1171 ROTRA MARE
IMO 9365996
9,200 2009
21.8
E
1172 ROTRA VENTE
IMO 9805568
8,817 2016
22.0
E
1173 LOTUS
IMO 9193525
9,389 1999
22.0
E
1174 BBC EAGLE
IMO 9407574
10,340 2008
22.0
E
1175 BBC DIRECTION
IMO 9347853
7,947 2007
22.1
E
1176 BBC ORION
IMO 9347841
7,947 2007
22.1
E
1177 PERA
IMO 9454216
6,199 2009
22.8
E
1178 BBC DART
IMO 9360207
7,968 2008
23.0
E
1179 DAGAT MAS
IMO 9213961
7,458 2000
23.0
E
1180 MALIK ARCTICA
IMO 9618135
8,438 2017
23.4
E
1181 DEFNE
IMO 9378230
6,042 2008
23.5
E
1182 PANTHERA J
IMO 9226700
7,072 2001
23.7
E
1183 CHL APOLLO
IMO 9318943
7,920 2004
24.3
E
1184 BBC AFRICA
IMO 9362621
7,531 2005
24.4
E
1185 JSP PORTO
IMO 9570644
7,880 2011
24.7
E
1186 BBC DOLPHIN
IMO 9360192
7,996 2007
24.7
E
1187 INDUSTRIAL CHALLENGER
IMO 9213935
7,428 2000
24.8
E
1188 ASTRID L
IMO 9306835
13,879 2006
24.9
E
1189 HJORDIS
IMO 9126235
6,904 1996
24.9
E
1190 MARJATTA
IMO 9126247
6,904 1996
25.0
E
Page 24 of 24 — 1,190 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 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.