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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)
#1,028 of 1,190 general cargos
CO₂ intensity
16.0 g CO₂/dwt·nm
vs segment average (10.91)
+47% higher
E
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
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
1001 MORGENSTOND II
IMO 9367073
 12,102 2007
15.7
E
1002 DONGEBORG
IMO 9163697
 8,832 1999
15.7
E
1003 ANNIE
IMO 9468097
 12,653 2010
15.7
E
1004 WILSON NORFOLK
IMO 9430997
 8,683 2011
15.7
E
1005 SMALAND
IMO 9277321
 7,701 2004
15.7
E
1006 HC EVA MARIE
IMO 9369071
 11,121 2007
15.8
E
1007 ROZ Y
IMO 9499931
 8,811 2008
15.8
E
1008 HADELAND
IMO 9505601
 9,692 2011
15.8
E
1009 DONAU
IMO 9385908
 8,267 2011
15.8
E
1010 ST.MARIA
IMO 9467134
 19,404 2011
15.8
E
1011 MARIT
IMO 9364148
 8,390 2008
15.8
E
1012 SUAVE
IMO 9306299
 7,488 2005
15.8
E
1013 WILSON NICE
IMO 9430959
 8,689 2010
15.9
E
1014 AZOV CONFIDENCE
IMO 9372602
 10,255 2007
15.9
E
1015 MARIETJE NORA
IMO 9481609
 9,068 2015
15.9
E
1016 ONEGO TRADER
IMO 9238351
 8,930 2001
15.9
E
1017 MARIETJE MARSILLA
IMO 9458248
 8,493 2010
15.9
E
1018 MAGOTHY
IMO 9418975
 19,397 2009
15.9
E
1019 LYSVIK SEAWAYS
IMO 9144251
 7,500 1998
15.9
E
1020 FLORIJNGRACHT
IMO 9428413
 12,200 2010
15.9
E
1021 HEERENGRACHT
IMO 9435753
 12,678 2009
15.9
E
1022 MEROVING
IMO 9453614
 7,224 2009
15.9
E
1023 HUDSONGRACHT
IMO 9433262
 12,672 2008
15.9
E
1024 MORNING TIDE
IMO 9320506
 12,008 2006
16.0
E
1025 LILA MOMBASA
IMO 9235359
 30,530 2003
16.0
E
1026 HC OPAL
IMO 9377846
 11,185 2010
16.0
E
1027 ARNE
IMO 9142564
 9,678 1998
16.0
E
1028 ICS SILVER LINING
IMO 9314351
 12,578 2005
16.0
E
1029 HAPPY RANGER
IMO 9139311
 15,443 1998
16.1
E
1030 LYSBRIS SEAWAYS
IMO 9144263
 7,500 1999
16.1
E
1031 BORE WAY
IMO 9892884
 6,768 2022
16.1
E
1032 FWN BONAFIDE
IMO 9321108
 11,534 2006
16.1
E
1033 LEMLAND
IMO 9415040
 8,850 2009
16.2
E
1034 PAUWGRACHT
IMO 9448308
 19,329 2010
16.2
E
1035 NAVIN EAGLE
IMO 9485186
 7,966 2008
16.2
E
1036 WARNOWBORG
IMO 9505572
 9,648 2011
16.3
E
1037 TALI
IMO 9173692
 13,340 1998
16.3
E
1038 KAREWOOD BRAVE
IMO 9281516
 6,315 2006
16.3
E
1039 ARIA VIBE
IMO 9004504
 9,597 1992
16.4
E
1040 CDRY WHITE
IMO 9365506
 8,537 2010
16.4
E
1041 POTTERSGRACHT
IMO 9424560
 19,366 2010
16.4
E
1042 AMELAND
IMO 9508794
 8,398 2009
16.4
E
1043 OPTIMA
IMO 9210244
 9,022 2000
16.4
E
1044 WILSON NORTH
IMO 9430947
 8,691 2010
16.5
E
1045 GALA
IMO 9304461
 12,578 2005
16.5
E
1046 EVITA
IMO 9381433
 8,169 2009
16.5
E
1047 PAN BOREAS
IMO 9488645
 8,091 2008
16.5
E
1048 SUA
IMO 9436276
 7,502 2009
16.5
E
1049 FLORAGRACHT
IMO 9509968
 12,178 2011
16.5
E
1050 CDRY BLACK
IMO 9504633
 8,537 2011
16.5
E
Page 21 of 24 — 1,190 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.