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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.

Segment rank (2024)
#3,364 of 3,531 bulk carriers
CO₂ intensity
8.0 g CO₂/dwt·nm
vs segment average (4.87)
+63% higher
E
3,604
vessels ranked
1.42
greenest (g CO₂/t·nm)
4.65
segment median
# Vessel Size (DWT) Built Carbon intensity — AER (g CO₂/dwt·nm) Grade
3351 HOPE
IMO 9545053
34,146 2011
7.9
E
3352 MARS J
IMO 9461972
34,306 2013
7.9
E
3353 RUMA
IMO 9652387
26,091 2013
7.9
E
3354 COREOCEAN OL
IMO 9519212
28,358 2009
7.9
E
3355 TATE J
IMO 9482770
34,439 2012
7.9
E
3356 SOLITAIRE I
IMO 9227962
24,997 2000
7.9
E
3357 DR SARKAS
IMO 9222558
28,290 2001
7.9
E
3358 AK KHAIRA
IMO 9300831
30,536 2006
7.9
E
3359 VEGA FALKTIND
IMO 9497426
31,754 2011
7.9
E
3360 NOUR STAR
IMO 9296315
28,653 2005
7.9
E
3361 CENTURY MELODY
IMO 9580211
16,233 2011
7.9
E
3362 ETHRA GOLD
IMO 9548328
32,599 2010
7.9
E
3363 DSM LAILA
IMO 9175913
23,612 1998
8.0
E
3364 MOHAMAD M
IMO 9141235
24,341 1997
8.0
E
3365 UGLJAN
IMO 9412294
37,729 2010
8.0
E
3366 SWORD LION
IMO 9136785
27,919 1996
8.0
E
3367 MS MARIA
IMO 9403841
21,118 2007
8.0
E
3368 CS CANDY
IMO 9542544
37,459 2012
8.0
E
3369 MIKE BAY
IMO 9481958
36,447 2010
8.0
E
3370 NIMERTIS
IMO 9650999
28,396 2013
8.0
E
3371 DEMA
IMO 9416446
34,000 2011
8.0
E
3372 FETHIYE-M
IMO 9485899
34,421 2011
8.0
E
3373 EKATERINA
IMO 9158458
27,174 2000
8.0
E
3374 EMIL SELMER
IMO 9559705
32,625 2010
8.0
E
3375 JUNO
IMO 9422378
30,185 2011
8.0
E
3376 SPLITTNES
IMO 9101730
18,886 1994
8.0
E
3377 PANAMAX OSTRIA
IMO 9399557
76,444 2008
8.0
E
3378 TBC KAILASH
IMO 9455399
35,152 2011
8.0
E
3379 BAM TRITON
IMO 9414474
30,009 2012
8.0
E
3380 REK ROYAL
IMO 9229867
20,035 2002
8.1
E
3381 ADNAN TORLAK
IMO 9243253
18,712 2001
8.1
E
3382 ELONG ELONG
IMO 9548732
21,460 2009
8.1
E
3383 SOLINA
IMO 9496252
30,182 2012
8.1
E
3384 HONGXIN OCEAN
IMO 9660279
32,500 2012
8.1
E
3385 KYALAMI
IMO 9574200
28,202 2011
8.1
E
3386 NORD STARK
IMO 9691591
28,368 2014
8.1
E
3387 SANTAMARIA
IMO 9571612
34,938 2013
8.1
E
3388 GANNET S
IMO 9316995
16,730 2007
8.1
E
3389 ANTHEIA
IMO 9473078
21,163 2010
8.1
E
3390 ECO SPITFIRE
IMO 9539468
33,664 2012
8.1
E
3391 AYANA STAR
IMO 9291212
28,449 2004
8.1
E
3392 MAMRY
IMO 9496264
30,206 2012
8.1
E
3393 BULKNES
IMO 9384370
33,171 2009
8.1
E
3394 STAR NIGHTHAWK
IMO 9441362
57,809 2011
8.1
E
3395 PAPA JOHN
IMO 9555149
56,543 2010
8.2
E
3396 ZHE HAI 1
IMO 9567489
35,055 2012
8.2
E
3397 HTK FORTUNE
IMO 9310769
32,555 2007
8.2
E
3398 PUNA
IMO 9546784
29,974 2010
8.2
E
3399 AURORA PRIMA
IMO 9485887
34,394 2011
8.2
E
3400 BIRTE SELMER
IMO 9474254
34,976 2011
8.2
E
Page 68 of 71 — 3,531 vessels
Engine intelligence

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.

Emission-friendly engine ranking

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.