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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)
#636 of 1,190 general cargos
CO₂ intensity
11.6 g CO₂/dwt·nm
vs segment average (10.91)
+7% higher
C
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
601 HELME
IMO 9504140
 11,023 2011
11.1
C
602 NAVIN HAWK
IMO 9522738
 7,959 2009
11.1
C
603 SEHER YAGCI
IMO 9556911
 10,450 2009
11.1
C
604 OCEAN FORCE
IMO 8821814
 12,150 1990
11.1
C
605 MUZAFFER ANA
IMO 9554157
 12,447 2010
11.1
C
606 AVONBORG
IMO 9466362
 17,294 2012
11.1
C
607 KC MERMAID
IMO 9505156
 7,184 2021
11.2
C
608 TRINITYBORG
IMO 9546485
 21,277 2013
11.2
C
609 BBC ODESA
IMO 9963413
 12,422 2023
11.2
C
610 NAVIN FALCON
IMO 9492933
 7,933 2008
11.2
C
611 YASMINA
IMO 9177765
 13,347 1998
11.2
C
612 ABILITY
IMO 9145645
 17,440 1998
11.3
C
613 BRUCE
IMO 9741140
 12,300 2016
11.3
C
614 CHELSEA-3
IMO 9361392
 5,827 2006
11.4
C
615 NURI SONAY
IMO 9310202
 14,888 2006
11.4
C
616 HOPTERIX
IMO 9645841
 7,540 2012
11.4
C
617 YM EVEREST
IMO 9653812
 16,717 2014
11.4
C
618 UAL CASTLE
IMO 9626168
 11,183 2013
11.4
C
619 CAPTAIN GRIGORIY VOVCHUK
IMO 9504279
 9,347 2010
11.4
C
620 ONEGO ISLE
IMO 9626156
 11,183 2012
11.5
C
621 EEBORG
IMO 9568328
 11,901 2012
11.5
C
622 MSC SHEILA F
IMO 9180968
 18,479 1999
11.5
C
623 THAMESBORG
IMO 9546459
 21,359 2013
11.5
C
624 HIZIR
IMO 9396529
 8,128 2007
11.5
C
625 ADNAN N
IMO 9334973
 11,792 2006
11.5
C
626 EDELSTEIN
IMO 9159581
 10,763 1997
11.5
C
627 GRIT CEMENT III
IMO 9116515
 16,325 1996
11.6
C
628 CHELSEA-7
IMO 9492634
 6,320 2010
11.6
C
629 ARKLOW ACE
IMO 9851957
 8,543 2020
11.6
C
630 HALISDEMIR
IMO 9517331
 7,000 2008
11.6
C
631 ALEXIA
IMO 9997282
 14,404 2024
11.6
C
632 PACIFIC FORTITUDE
IMO 9381392
 12,740 2007
11.6
C
633 IMMENSITY
IMO 9171395
 9,766 2002
11.6
C
634 HAMBURG.S
IMO 9071650
 10,560 1993
11.6
C
635 ARAGONBORG
IMO 9466312
 17,294 2010
11.6
C
636 LONGWAVE
IMO 9693109
 10,714 2015
11.6
C
637 K HAK
IMO 9532848
 12,611 2009
11.7
C
638 AMAZONEBORG
IMO 9333541
 17,355 2007
11.7
C
639 BUYUFIX
IMO 9538957
 7,500 2010
11.7
C
640 CONDOR VALPARAISO
IMO 9473224
 17,257 2011
11.7
C
641 ABK EAGLE
IMO 9217462
 14,026 1999
11.7
C
642 FWN SPACE
IMO 9735232
 10,569 2018
11.7
C
643 LARISSA 1
IMO 9154268
 17,064 1999
11.7
C
644 KALLIO
IMO 9319064
 21,353 2006
11.7
C
645 VECTIS PRIDE
IMO 9626132
 11,183 2012
11.7
C
646 ABOUDI D
IMO 9385817
 8,759 2007
11.8
C
647 FLAMURI
IMO 9472713
 10,221 2008
11.8
C
648 ALASKABORG
IMO 9466374
 17,294 2012
11.8
C
649 FWN SPIRIT
IMO 9735220
 10,526 2017
11.8
C
650 TANARO RIVER
IMO 9631929
 7,600 2012
11.8
C
Page 13 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.