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 |
|---|---|---|---|---|---|
| 3451 |
SKIPPER PLANET
IMO 9060730
|
22,176 | 1993 |
8.7
|
E |
| 3452 |
PIRIN
IMO 9381861
|
21,211 | 2007 |
8.7
|
E |
| 3453 |
AFRICAN JACARANDA
IMO 9354076
|
18,909 | 2007 |
8.7
|
E |
| 3454 |
GLOBAL HARMONY
IMO 9473573
|
34,529 | 2010 |
8.7
|
E |
| 3455 |
GULNAK
IMO 9579028
|
35,000 | 2011 |
8.7
|
E |
| 3456 |
ABK LEGEND
IMO 9238674
|
30,039 | 2002 |
8.7
|
E |
| 3457 |
RUN CHEN 2
IMO 9611618
|
32,709 | 2011 |
8.7
|
E |
| 3458 |
IC PROGRESS
IMO 9611577
|
32,527 | 2011 |
8.7
|
E |
| 3459 |
CS CAPRICE
IMO 9406104
|
30,487 | 2010 |
8.7
|
E |
| 3460 |
SIDER AMBOS
IMO 9805295
|
19,998 | 2017 |
8.7
|
E |
| 3461 |
CS CRYSTAL
IMO 9406128
|
30,478 | 2010 |
8.8
|
E |
| 3462 |
ELAR TRADER
IMO 9409534
|
37,782 | 2010 |
8.8
|
E |
| 3463 |
HONORINE
IMO 9146974
|
28,542 | 1996 |
8.8
|
E |
| 3464 |
RAVNI KOTARI
IMO 9489168
|
34,373 | 2010 |
8.9
|
E |
| 3465 |
CLIPPER TYNE
IMO 9594535
|
31,905 | 2012 |
8.9
|
E |
| 3466 |
ASIA SPIRIT
IMO 9637430
|
35,031 | 2006 |
8.9
|
E |
| 3467 |
TRUE BROTHER
IMO 9243693
|
31,812 | 2001 |
8.9
|
E |
| 3468 |
AURELIA
IMO 9392133
|
23,641 | 2009 |
8.9
|
E |
| 3469 |
WICKO
IMO 9393474
|
30,379 | 2010 |
8.9
|
E |
| 3470 |
SAKAR
IMO 9104811
|
21,583 | 1995 |
8.9
|
E |
| 3471 |
BOBIC
IMO 9317781
|
31,896 | 2006 |
8.9
|
E |
| 3472 |
HOPE
IMO 9460277
|
35,957 | 2010 |
8.9
|
E |
| 3473 |
LEGEND
IMO 9587685
|
24,319 | 2010 |
8.9
|
E |
| 3474 |
CHESTNUT
IMO 9477866
|
30,810 | 2010 |
9.0
|
E |
| 3475 |
SAMENTHA
IMO 9118264
|
16,860 | 1998 |
9.0
|
E |
| 3476 |
AK LIZA
IMO 9300855
|
30,541 | 2007 |
9.1
|
E |
| 3477 |
CENTURY BRIGHT
IMO 9694866
|
16,210 | 2014 |
9.1
|
E |
| 3478 |
SANDNES
IMO 9306029
|
27,711 | 2005 |
9.1
|
E |
| 3479 |
LADY SPERANZA
IMO 9200574
|
16,870 | 2000 |
9.1
|
E |
| 3480 |
REK R
IMO 9085895
|
16,857 | 1997 |
9.1
|
E |
| 3481 |
SUPRA
IMO 9397200
|
16,648 | 2006 |
9.1
|
E |
| 3482 |
LABRADOR
IMO 9415222
|
30,899 | 2010 |
9.1
|
E |
| 3483 |
JIN YUAN LING
IMO 9487081
|
31,771 | 2009 |
9.1
|
E |
| 3484 |
YA HUSSEIN
IMO 9114490
|
24,290 | 1996 |
9.2
|
E |
| 3485 |
LITA
IMO 9117416
|
18,305 | 1995 |
9.2
|
E |
| 3486 |
THOE
IMO 9400588
|
12,500 | 2006 |
9.2
|
E |
| 3487 |
HTK NEPTUNE
IMO 9329411
|
37,426 | 2007 |
9.2
|
E |
| 3488 |
AL KARRAR
IMO 9076387
|
27,308 | 1994 |
9.2
|
E |
| 3489 |
TZAREVNA
IMO 9145231
|
21,470 | 2004 |
9.2
|
E |
| 3490 |
ONEGO WISLA
IMO 9521875
|
18,833 | 2012 |
9.2
|
E |
| 3491 |
DRAWSKO
IMO 9393450
|
30,487 | 2010 |
9.3
|
E |
| 3492 |
SIDER KING
IMO 9615913
|
25,467 | 2011 |
9.3
|
E |
| 3493 |
SPARTA
IMO 9524803
|
18,969 | 2009 |
9.3
|
E |
| 3494 |
SHOVELER
IMO 9459979
|
30,928 | 2009 |
9.3
|
E |
| 3495 |
MBC DAISY
IMO 9609902
|
15,332 | 2011 |
9.3
|
E |
| 3496 |
YUKA D
IMO 9586710
|
34,268 | 2011 |
9.3
|
E |
| 3497 |
VENI
IMO 9611589
|
32,527 | 2011 |
9.3
|
E |
| 3498 |
CSL THAMES
IMO 9440447
|
29,827 | 2006 |
9.4
|
E |
| 3499 |
EQUATOR
IMO 9363766
|
18,965 | 2008 |
9.4
|
E |
| 3500 |
CELINA
IMO 9119074
|
24,325 | 1995 |
9.4
|
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.