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 |
|---|---|---|---|---|---|
| 2301 |
ANATOLIAN EAGLE
IMO 9490820
|
57,970 | 2011 |
5.3
|
D |
| 2302 |
ES JASMINE
IMO 9738387
|
38,860 | 2018 |
5.3
|
D |
| 2303 |
SANITA S
IMO 9237888
|
46,683 | 2004 |
5.3
|
D |
| 2304 |
UNION TRADER
IMO 9445710
|
57,700 | 2010 |
5.3
|
D |
| 2305 |
MORNING ORCHID
IMO 9844241
|
37,340 | 2019 |
5.3
|
D |
| 2306 |
LOWLANDS DIAMOND
IMO 9965617
|
39,996 | 2023 |
5.3
|
D |
| 2307 |
SHANGHAI EAGLE
IMO 9743588
|
63,438 | 2016 |
5.3
|
D |
| 2308 |
SN SERENITY
IMO 9736420
|
36,228 | 2016 |
5.3
|
D |
| 2309 |
MILEENA
IMO 9586693
|
58,018 | 2010 |
5.3
|
D |
| 2310 |
ELEEN EVA
IMO 9527415
|
58,215 | 2012 |
5.3
|
D |
| 2311 |
SHENG PING HAI
IMO 9505455
|
56,564 | 2012 |
5.3
|
D |
| 2312 |
COMMON FAITH
IMO 9610092
|
57,002 | 2012 |
5.3
|
D |
| 2313 |
IVS GLENEAGLES
IMO 9736066
|
58,071 | 2016 |
5.3
|
D |
| 2314 |
AKDENIZ-M
IMO 9261047
|
32,178 | 2002 |
5.3
|
D |
| 2315 |
ASTERAS
IMO 9610999
|
56,605 | 2013 |
5.3
|
D |
| 2316 |
STONEWELL PIONEER
IMO 9679385
|
56,533 | 2014 |
5.3
|
D |
| 2317 |
JERA
IMO 9610884
|
57,111 | 2012 |
5.3
|
D |
| 2318 |
WADI ALKARNAK
IMO 9127136
|
70,090 | 1997 |
5.3
|
D |
| 2319 |
EPTALOFOS
IMO 9343869
|
92,567 | 2007 |
5.3
|
D |
| 2320 |
YANNIS
IMO 9401910
|
50,779 | 2009 |
5.3
|
D |
| 2321 |
KOSMAN
IMO 9630731
|
58,000 | 2013 |
5.3
|
D |
| 2322 |
UNITY MOON
IMO 9832432
|
36,898 | 2019 |
5.3
|
D |
| 2323 |
FIVOS
IMO 9611008
|
56,708 | 2013 |
5.3
|
D |
| 2324 |
ENDLESS HORIZON
IMO 9499462
|
58,018 | 2012 |
5.3
|
D |
| 2325 |
FEDERAL SPRUCE
IMO 9610468
|
37,141 | 2012 |
5.3
|
D |
| 2326 |
PAKHOI
IMO 9721554
|
39,777 | 2016 |
5.3
|
D |
| 2327 |
LMZ VEGA
IMO 9548574
|
56,810 | 2010 |
5.3
|
D |
| 2328 |
MEDITERRANEAN SPIRIT
IMO 9725407
|
38,858 | 2016 |
5.3
|
D |
| 2329 |
HORIZON JADE
IMO 9579054
|
76,032 | 2011 |
5.3
|
D |
| 2330 |
FLORENCIA
IMO 9958377
|
39,972 | 2023 |
5.3
|
D |
| 2331 |
GLYKOFILOUSSA
IMO 9296236
|
75,734 | 2005 |
5.3
|
D |
| 2332 |
ANARITA
IMO 9636008
|
58,000 | 2012 |
5.3
|
D |
| 2333 |
CETUS ORCA
IMO 9670767
|
43,494 | 2015 |
5.3
|
D |
| 2334 |
DATO SUCCESS
IMO 9610494
|
56,860 | 2012 |
5.3
|
D |
| 2335 |
STAR APUS
IMO 9698795
|
63,123 | 2014 |
5.3
|
D |
| 2336 |
MALTEZA
IMO 9479034
|
55,580 | 2011 |
5.3
|
D |
| 2337 |
BRISTOL
IMO 9507790
|
55,618 | 2011 |
5.3
|
D |
| 2338 |
STRANGE ATTRACTOR
IMO 9303065
|
55,742 | 2006 |
5.3
|
D |
| 2339 |
OCEAN DIAMOND
IMO 9465162
|
58,115 | 2013 |
5.3
|
D |
| 2340 |
DAIWAN ELEGANCE
IMO 9697894
|
35,531 | 2015 |
5.3
|
D |
| 2341 |
ROSALIA
IMO 9696826
|
39,907 | 2016 |
5.3
|
D |
| 2342 |
SPAR VIRGO
IMO 9299276
|
53,565 | 2005 |
5.3
|
D |
| 2343 |
COMMON VENTURE
IMO 9610080
|
57,002 | 2011 |
5.3
|
D |
| 2344 |
ROME TRADER
IMO 9565118
|
56,838 | 2010 |
5.3
|
D |
| 2345 |
YANGZE 35
IMO 9617600
|
47,091 | 2011 |
5.3
|
D |
| 2346 |
TOMINI SHAMAL
IMO 9709257
|
38,785 | 2013 |
5.3
|
D |
| 2347 |
NEW EXPLORER
IMO 9481489
|
79,448 | 2014 |
5.3
|
D |
| 2348 |
JU XIANG
IMO 9294202
|
52,050 | 2004 |
5.3
|
D |
| 2349 |
AMIS KALON
IMO 9520807
|
58,107 | 2010 |
5.3
|
D |
| 2350 |
STAR HARMONY
IMO 9284520
|
52,980 | 2005 |
5.3
|
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.