Most Emission-Efficient Bulk Carriers
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 |
|---|---|---|---|---|---|
| 2751 |
DAISY OCEAN
IMO 9456226
|
56,563 | 2010 |
6.0
|
D |
| 2752 |
PHATRA NAREE
IMO 9649861
|
35,882 | 2017 |
6.0
|
D |
| 2753 |
FLORA SCHULTE
IMO 9841938
|
39,874 | 2015 |
6.0
|
D |
| 2754 |
ROMANDIE
IMO 9542829
|
35,774 | 2010 |
6.0
|
D |
| 2755 |
DS SOFIE BULKER
IMO 9310604
|
28,682 | 2007 |
6.0
|
D |
| 2756 |
GREAT COSMOS
IMO 9792917
|
38,649 | 2018 |
6.0
|
D |
| 2757 |
TIZIANA
IMO 9744764
|
35,443 | 2016 |
6.0
|
D |
| 2758 |
GANT NEREA
IMO 9763693
|
37,985 | 2016 |
6.0
|
D |
| 2759 |
SE MARINA
IMO 9701047
|
33,173 | 2017 |
6.0
|
D |
| 2760 |
OCEAN CENTURY
IMO 9485033
|
55,848 | 2011 |
6.0
|
D |
| 2761 |
ASALET
IMO 9574169
|
28,189 | 2010 |
6.0
|
D |
| 2762 |
MERAKLIS
IMO 9227819
|
50,296 | 2001 |
6.0
|
D |
| 2763 |
KASZUBY
IMO 9346847
|
38,980 | 2008 |
6.0
|
D |
| 2764 |
BELL BAY
IMO 9312664
|
33,541 | 2006 |
6.0
|
D |
| 2765 |
LUGANO
IMO 9132662
|
28,350 | 1996 |
6.0
|
D |
| 2766 |
SUPRA PASHA
IMO 9624031
|
55,848 | 2012 |
6.0
|
D |
| 2767 |
SEAVENUS
IMO 9205940
|
50,913 | 2000 |
6.0
|
D |
| 2768 |
PRINCESS SHAHD
IMO 9392092
|
33,387 | 2009 |
6.0
|
D |
| 2769 |
ATLANTIC SPIRIT
IMO 9660126
|
35,053 | 2013 |
6.1
|
D |
| 2770 |
PANOCEANIS
IMO 9460320
|
53,562 | 2007 |
6.1
|
D |
| 2771 |
SANN TRO
IMO 9110315
|
27,327 | 1995 |
6.1
|
D |
| 2772 |
UBC HOUSTON
IMO 9697143
|
38,000 | 2015 |
6.1
|
D |
| 2773 |
IVONE
IMO 9691486
|
28,294 | 2014 |
6.1
|
D |
| 2774 |
MAAS CONFIDENCE
IMO 9713210
|
34,914 | 2016 |
6.1
|
D |
| 2775 |
DORYSIA
IMO 9522910
|
36,863 | 2010 |
6.1
|
D |
| 2776 |
BRIGHTEN TRADER
IMO 9771482
|
39,310 | 2017 |
6.1
|
D |
| 2777 |
BUNUN ORCHID
IMO 9894624
|
37,875 | 2021 |
6.1
|
D |
| 2778 |
CIELO DI IYO
IMO 9808340
|
37,204 | 2017 |
6.1
|
D |
| 2779 |
SF DARIKA
IMO 9502752
|
35,256 | 2010 |
6.1
|
D |
| 2780 |
PANAMAX CHRISTINA
IMO 9510319
|
82,176 | 2010 |
6.1
|
D |
| 2781 |
CLIPPER AEGINA
IMO 9497177
|
32,691 | 2010 |
6.1
|
D |
| 2782 |
MARITIME VICTORY
IMO 9550292
|
28,344 | 2010 |
6.1
|
D |
| 2783 |
SOPOT
IMO 9727522
|
39,000 | 2019 |
6.1
|
D |
| 2784 |
S NEPTUNE
IMO 9634892
|
29,037 | 2012 |
6.1
|
D |
| 2785 |
FEDERAL YUKINA
IMO 9476977
|
35,868 | 2010 |
6.1
|
D |
| 2786 |
CHINA SPIRIT
IMO 9655846
|
35,097 | 2013 |
6.1
|
D |
| 2787 |
LILA II
IMO 9498315
|
34,604 | 2012 |
6.1
|
D |
| 2788 |
FEDERAL OSHIMA
IMO 9200330
|
36,563 | 1999 |
6.1
|
D |
| 2789 |
ALYTUS
IMO 9544750
|
36,782 | 2011 |
6.1
|
D |
| 2790 |
RANA
IMO 9693290
|
39,915 | 2015 |
6.1
|
D |
| 2791 |
NORDIC WECO
IMO 9607459
|
34,236 | 2013 |
6.1
|
D |
| 2792 |
EFFICIENCY OL
IMO 9491666
|
37,130 | 2010 |
6.1
|
D |
| 2793 |
YASA MIMOSA
IMO 9786061
|
40,262 | 2022 |
6.1
|
D |
| 2794 |
VANTAGE ROSE
IMO 9646716
|
36,064 | 2014 |
6.1
|
D |
| 2795 |
ES VANQUISH
IMO 9708928
|
35,510 | 2015 |
6.1
|
D |
| 2796 |
MAJESTIC MARINA
IMO 9378826
|
32,115 | 2009 |
6.1
|
D |
| 2797 |
WARMIA
IMO 9285146
|
38,981 | 2005 |
6.1
|
D |
| 2798 |
ZUDAR
IMO 9574042
|
38,273 | 2011 |
6.1
|
D |
| 2799 |
CAPE GULL
IMO 9674804
|
36,320 | 2013 |
6.1
|
D |
| 2800 |
ARKLOW SPRAY
IMO 9649548
|
34,919 | 2014 |
6.1
|
D |
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.