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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)
#843 of 1,190 general cargos
CO₂ intensity
13.7 g CO₂/dwt·nm
vs segment average (10.91)
+25% higher
D
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
801 AZORESBORG
IMO 9466051
17,407 2010
13.3
D
802 EKMEN STAR
IMO 9218193
7,580 2001
13.3
D
803 ERNA SU
IMO 9037290
9,205 2002
13.3
D
804 KWINTEBANK
IMO 9234288
9,857 2002
13.3
D
805 SEAWAY K
IMO 9177777
13,347 1999
13.3
D
806 FWN SKY
IMO 9721633
10,521 2015
13.4
D
807 O7 VEGA S
IMO 9484247
9,862 2011
13.4
D
808 INDUSTRIAL SWIFT
IMO 9741152
12,337 2017
13.4
D
809 ONEGO ELBE
IMO 9438573
11,087 2008
13.4
D
810 ONEGO MERCHANT
IMO 9238363
8,930 2002
13.4
D
811 DOLFIJNGRACHT
IMO 9420825
17,967 2009
13.4
D
812 AK DISCOVERY
IMO 9218208
7,567 2001
13.4
D
813 ARA ROTTERDAM
IMO 9549566
13,524 2012
13.4
D
814 SNOEKGRACHT
IMO 9202546
21,311 2000
13.4
D
815 M/V MEGAN
IMO 8913320
12,231 1993
13.4
D
816 MANISA AMELIA
IMO 9933456
8,892 2023
13.4
D
817 SIF W
IMO 9754434
12,237 2018
13.4
D
818 URA
IMO 9436252
7,502 2009
13.4
D
819 INDUSTRIAL MOMENTUM
IMO 9534432
10,053 2010
13.4
D
820 SIDER LONDON
IMO 9528706
14,121 2009
13.4
D
821 HAPPY DYNAMIC
IMO 9551973
18,043 2011
13.4
D
822 YANGZE VENUS
IMO 9428401
12,094 2013
13.5
D
823 ESEN
IMO 9235488
8,959 2000
13.5
D
824 SPIEGELGRACHT
IMO 9197911
21,311 2000
13.5
D
825 NASSAUBORG
IMO 9248564
20,530 2006
13.5
D
826 GARIP BABA
IMO 9564970
8,639 2010
13.5
D
827 SIVUMUT
IMO 9501253
12,747 2010
13.5
D
828 HAPPY DELTA
IMO 9551935
18,276 2011
13.5
D
829 LADY RUBINA
IMO 9370109
13,464 2008
13.5
D
830 BBC VOLGA
IMO 9436329
17,303 2009
13.6
D
831 YI HUI ZHI HAI
IMO 9628697
12,313 2013
13.6
D
832 BBC PLATA
IMO 9291975
12,837 2005
13.6
D
833 SINGELGRACHT
IMO 9197375
21,311 2000
13.6
D
834 ARKLOW MARSH
IMO 9440253
14,998 2010
13.6
D
835 ANNABELLA
IMO 8919788
11,117 1991
13.6
D
836 INDUSTRIAL URSULA
IMO 9435117
12,743 2008
13.6
D
837 STATENGRACHT
IMO 9288045
21,253 2004
13.6
D
838 ZEYCAN ANA
IMO 9564994
8,649 2010
13.7
D
839 TRANSUND
IMO 9213088
16,612 2002
13.7
D
840 ARKLOW BREEZE
IMO 9638812
8,642 2015
13.7
D
841 TEMA
IMO 9428786
8,270 2007
13.7
D
842 BBC MAINE
IMO 9357200
12,792 2007
13.7
D
843 LADY LUCIANA
IMO 9320520
11,576 2005
13.7
D
844 RONNIE
IMO 9736224
12,234 2021
13.7
D
845 SLOTERGRACHT
IMO 9197947
21,311 2000
13.7
D
846 BOHWA PIONEER
IMO 9565869
8,767 2010
13.7
D
847 SH EXPRESS
IMO 9085443
8,177 1994
13.7
D
848 HAPPY DIAMOND
IMO 9551947
18,148 2011
13.7
D
849 LADY SHAM
IMO 9171383
9,802 2001
13.7
D
850 NACC ALICUDI
IMO 9586435
7,694 2011
13.8
D
Page 17 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.