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 2025. 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 |
|---|---|---|---|---|---|
| 2451 |
NEW ISLAND
IMO 9258349
|
47,304 | 2002 |
5.4
|
D |
| 2452 |
SINOP
IMO 9644184
|
63,200 | 2013 |
5.4
|
D |
| 2453 |
ALKYONIS
IMO 9709465
|
37,418 | 2016 |
5.4
|
D |
| 2454 |
CAPTAIN D LEMPESIS
IMO 9364801
|
53,466 | 2005 |
5.4
|
D |
| 2455 |
HAATO
IMO 9589786
|
61,472 | 2011 |
5.4
|
D |
| 2456 |
SHUN FU XING
IMO 9213363
|
75,172 | 2001 |
5.4
|
D |
| 2457 |
ASTRO SANISTRA
IMO 9805661
|
60,365 | 2018 |
5.4
|
D |
| 2458 |
OMURTAG
IMO 9605839
|
56,709 | 2012 |
5.4
|
D |
| 2459 |
AG VALOR
IMO 9312327
|
28,510 | 2004 |
5.4
|
D |
| 2460 |
LMZ TITAN
IMO 9466908
|
56,779 | 2012 |
5.4
|
D |
| 2461 |
NJ JUPITER
IMO 9302841
|
55,947 | 2005 |
5.4
|
D |
| 2462 |
ENJOY PROSPERITY
IMO 9545728
|
56,726 | 2011 |
5.4
|
D |
| 2463 |
TUNSIN
IMO 9768954
|
37,657 | 2017 |
5.4
|
D |
| 2464 |
FEDERAL DELTA
IMO 9805271
|
34,492 | 2018 |
5.4
|
D |
| 2465 |
NEW SIHAM
IMO 9197882
|
31,025 | 1999 |
5.4
|
D |
| 2466 |
LALE S
IMO 9603051
|
57,970 | 2011 |
5.4
|
D |
| 2467 |
LADY SPERANZA
IMO 9200574
|
16,870 | 2000 |
5.4
|
D |
| 2468 |
FUJI HARMONY
IMO 9913999
|
39,989 | 2022 |
5.4
|
D |
| 2469 |
DODO
IMO 9662320
|
39,017 | 2012 |
5.4
|
D |
| 2470 |
CL HEIDI
IMO 9720952
|
63,571 | 2016 |
5.4
|
D |
| 2471 |
ROOSTER
IMO 9723942
|
37,896 | 2016 |
5.4
|
D |
| 2472 |
FEDERAL NAGARA
IMO 9805257
|
34,492 | 2018 |
5.4
|
D |
| 2473 |
ROSALIA
IMO 9696826
|
39,907 | 2016 |
5.4
|
D |
| 2474 |
VIVA GLOBUS
IMO 9251315
|
52,300 | 2002 |
5.4
|
D |
| 2475 |
LI DA CHANG
IMO 9547817
|
56,316 | 2010 |
5.4
|
D |
| 2476 |
DSM FERRO
IMO 9236092
|
50,320 | 2001 |
5.4
|
D |
| 2477 |
SEA MOON
IMO 9228227
|
28,494 | 2002 |
5.4
|
D |
| 2478 |
MURGASH
IMO 9996965
|
32,193 | 2025 |
5.4
|
D |
| 2479 |
FEDERAL SHIMANTO
IMO 9218404
|
32,787 | 2001 |
5.4
|
D |
| 2480 |
DENSA SEAL
IMO 9649110
|
37,586 | 2011 |
5.4
|
D |
| 2481 |
BAO RUI LING
IMO 9617258
|
47,521 | 2014 |
5.4
|
D |
| 2482 |
LUGANO
IMO 9132662
|
28,350 | 1996 |
5.4
|
D |
| 2483 |
FEDERAL MONTREAL
IMO 9838474
|
34,492 | 2019 |
5.4
|
D |
| 2484 |
NORDLOIRE
IMO 9596026
|
37,212 | 2013 |
5.4
|
D |
| 2485 |
FEDERAL SATSUKI
IMO 9515101
|
35,885 | 2012 |
5.4
|
D |
| 2486 |
QING HUA SHAN
IMO 9741528
|
63,457 | 2016 |
5.4
|
D |
| 2487 |
JNS LAKE
IMO 1039357
|
40,489 | 2024 |
5.4
|
D |
| 2488 |
OUTRIDER
IMO 9701061
|
33,190 | 2016 |
5.4
|
D |
| 2489 |
FEDERAL FRONTIER
IMO 9866768
|
34,492 | 2021 |
5.4
|
D |
| 2490 |
SEASTAR AVALON
IMO 9755921
|
36,184 | 2017 |
5.4
|
D |
| 2491 |
RUBINA
IMO 9725512
|
39,959 | 2018 |
5.4
|
D |
| 2492 |
ABU AL ABYAD
IMO 9494022
|
57,369 | 2011 |
5.4
|
D |
| 2493 |
CAIPIRINHA
IMO 9714769
|
38,668 | 2015 |
5.4
|
D |
| 2494 |
BERGE RISHIRI
IMO 9713222
|
35,172 | 2017 |
5.4
|
D |
| 2495 |
MILAS
IMO 9279379
|
50,341 | 2004 |
5.4
|
D |
| 2496 |
CS JADEN
IMO 9660061
|
38,101 | 2013 |
5.4
|
D |
| 2497 |
CETUS BOWHEAD
IMO 9670755
|
43,433 | 2015 |
5.4
|
D |
| 2498 |
TAURUS
IMO 9273818
|
76,616 | 2004 |
5.4
|
D |
| 2499 |
JIN CHAO
IMO 9691412
|
63,469 | 2014 |
5.4
|
D |
| 2500 |
C LION
IMO 9425916
|
58,117 | 2010 |
5.4
|
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 2025 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.