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 |
|---|---|---|---|---|---|
| 2801 |
BAR
IMO 9693496
|
36,048 | 2014 |
6.1
|
D |
| 2802 |
ZUDAR
IMO 9574042
|
38,273 | 2011 |
6.1
|
D |
| 2803 |
CHRYSANTHE
IMO 9497086
|
32,500 | 2011 |
6.1
|
D |
| 2804 |
SILVERFJORD
IMO 9707742
|
39,202 | 2015 |
6.1
|
D |
| 2805 |
CARME
IMO 9697961
|
35,906 | 2014 |
6.1
|
D |
| 2806 |
GULLWING
IMO 9595981
|
37,009 | 2013 |
6.1
|
D |
| 2807 |
CL SEVEN
IMO 9607576
|
50,630 | 2011 |
6.2
|
D |
| 2808 |
SKY GATE
IMO 9445136
|
28,397 | 2008 |
6.2
|
D |
| 2809 |
VIPHA NAREE
IMO 9722027
|
38,851 | 2015 |
6.2
|
D |
| 2810 |
ZHEN XIANG 9
IMO 9541825
|
58,474 | 2012 |
6.2
|
D |
| 2811 |
AGIA MARINA
IMO 9700562
|
33,398 | 2014 |
6.2
|
D |
| 2812 |
HANZE GENDT
IMO 9605176
|
35,845 | 2012 |
6.2
|
D |
| 2813 |
CANADIAN BULKER
IMO 9855422
|
39,541 | 2019 |
6.2
|
D |
| 2814 |
ORHAN
IMO 9625451
|
35,138 | 2013 |
6.2
|
D |
| 2815 |
MINDANAO
IMO 9478963
|
55,696 | 2006 |
6.2
|
D |
| 2816 |
AHSOKA
IMO 9669976
|
36,334 | 2013 |
6.2
|
D |
| 2817 |
ROADRUNNER
IMO 9438042
|
54,057 | 2008 |
6.2
|
D |
| 2818 |
SIDER PERA
IMO 9633202
|
38,218 | 2012 |
6.2
|
D |
| 2819 |
ASL LUNA
IMO 9662423
|
37,070 | 2011 |
6.2
|
D |
| 2820 |
FOUR NABUCCO
IMO 9450650
|
36,438 | 2010 |
6.2
|
D |
| 2821 |
BLUE SAPPHIRE
IMO 9877339
|
38,580 | 2020 |
6.2
|
D |
| 2822 |
NORDLOIRE
IMO 9596026
|
37,212 | 2013 |
6.2
|
D |
| 2823 |
EAGLE
IMO 9490674
|
58,018 | 2010 |
6.2
|
D |
| 2824 |
WHITE WANDERER
IMO 9621869
|
37,869 | 2012 |
6.2
|
D |
| 2825 |
NAVIOS CHRISTINE B
IMO 9496238
|
58,058 | 2009 |
6.2
|
D |
| 2826 |
MAZURY
IMO 9285122
|
38,981 | 2005 |
6.2
|
E |
| 2827 |
BOGDAN
IMO 9905710
|
32,167 | 2021 |
6.2
|
E |
| 2828 |
SCOTLAND BAY
IMO 9276200
|
28,446 | 2004 |
6.2
|
E |
| 2829 |
PAULA TRADER
IMO 9855458
|
39,498 | 2020 |
6.2
|
E |
| 2830 |
ASPRI
IMO 9658771
|
33,371 | 2014 |
6.2
|
E |
| 2831 |
AFRICAN SHRIKE
IMO 9715218
|
39,728 | 2015 |
6.2
|
E |
| 2832 |
BARBRO G
IMO 9546796
|
29,975 | 2010 |
6.2
|
E |
| 2833 |
ADASTAR
IMO 9701231
|
34,334 | 2015 |
6.2
|
E |
| 2834 |
MOUNT TARANAKI
IMO 9361782
|
33,510 | 2009 |
6.2
|
E |
| 2835 |
R SKYWALKER
IMO 9610248
|
36,332 | 2013 |
6.2
|
E |
| 2836 |
JIU FENG LING
IMO 9505443
|
32,033 | 2011 |
6.2
|
E |
| 2837 |
STELLAR TRADER
IMO 9628817
|
35,946 | 2013 |
6.2
|
E |
| 2838 |
YANGZE 32
IMO 9617612
|
47,020 | 2012 |
6.2
|
E |
| 2839 |
FRIEDERIKE SCHULTE
IMO 9721425
|
40,058 | 2015 |
6.2
|
E |
| 2840 |
ER NAZIRE
IMO 9578543
|
56,716 | 2010 |
6.2
|
E |
| 2841 |
BUNUN BENEFIT
IMO 9747144
|
37,372 | 2019 |
6.2
|
E |
| 2842 |
KASHKAR
IMO 9285029
|
38,890 | 2005 |
6.2
|
E |
| 2843 |
KIBO
IMO 9719331
|
38,896 | 2015 |
6.2
|
E |
| 2844 |
PELAGIANI
IMO 9282613
|
35,313 | 2004 |
6.2
|
E |
| 2845 |
ASIA MINOR
IMO 9754161
|
39,094 | 2019 |
6.2
|
E |
| 2846 |
STRATEGIC EQUITY
IMO 9689902
|
39,880 | 2014 |
6.2
|
E |
| 2847 |
DS MANATEE
IMO 9255189
|
27,129 | 2002 |
6.2
|
E |
| 2848 |
ILENAO
IMO 9524683
|
55,442 | 2010 |
6.2
|
E |
| 2849 |
ANGEL
IMO 9590620
|
37,227 | 2014 |
6.2
|
E |
| 2850 |
AEOLOS
IMO 9228382
|
32,256 | 2001 |
6.2
|
E |
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.