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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)
#3,150 of 3,531 bulk carriers
CO₂ intensity
7.0 g CO₂/dwt·nm
vs segment average (4.87)
+44% 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
3101 LAGAVULIN
IMO 9396555
16,115 2007
6.9
E
3102 REK ELITE
IMO 9498626
37,369 2012
6.9
E
3103 HANNAH
IMO 9464558
28,354 2008
6.9
E
3104 ASPARUKH
IMO 9488578
57,329 2010
6.9
E
3105 XIN HAI TONG 17
IMO 9519016
57,070 2010
6.9
E
3106 ECO BUSHFIRE
IMO 9561344
32,081 2011
6.9
E
3107 AKSON SARA
IMO 9475739
33,090 2010
6.9
E
3108 MUSTAFA BEY
IMO 9110339
27,209 1995
6.9
E
3109 JOHANNA G
IMO 9285940
37,228 2004
6.9
E
3110 AGIA VALENTINA
IMO 9472701
29,572 2008
6.9
E
3111 SUPRA SOVEREIGN
IMO 9478860
55,598 2012
6.9
E
3112 WIGEON
IMO 9358395
37,238 2007
6.9
E
3113 LMZ TITAN
IMO 9466908
56,779 2012
6.9
E
3114 NORDSCHELDE
IMO 9596038
37,212 2013
6.9
E
3115 WHITE DEFENDER
IMO 9621895
37,960 2012
6.9
E
3116 JESSICA B
IMO 9262534
37,384 2003
6.9
E
3117 AFRICAN KALMIA
IMO 9666431
28,000 2016
6.9
E
3118 LILA SYDNEY
IMO 9660035
28,226 2013
6.9
E
3119 NORDIC MERCHANTS
IMO 9689574
37,500 2014
6.9
E
3120 BLACKY
IMO 9393149
30,802 2008
6.9
E
3121 BENJAMAS NAREE
IMO 9464027
33,780 2012
6.9
E
3122 PL FAITH
IMO 9595204
36,787 2011
6.9
E
3123 PHOENIX
IMO 9553232
56,568 2012
6.9
E
3124 SUMMER SEA
IMO 9639763
35,240 2013
6.9
E
3125 CAPE GEORGE
IMO 9496331
35,996 2012
6.9
E
3126 MERCURIUS
IMO 9580091
37,705 2010
7.0
E
3127 IPPOKRATIS
IMO 9585663
37,056 2011
7.0
E
3128 TINA S
IMO 9498432
34,689 2011
7.0
E
3129 NSM KUMPULA
IMO 9590802
56,348 2012
7.0
E
3130 CAPETAN VASSILIS II
IMO 9580118
34,468 2010
7.0
E
3131 VANTAGE EUPHORIA
IMO 9620126
32,071 2013
7.0
E
3132 UNION GROOVE
IMO 9580106
36,996 2012
7.0
E
3133 CRINIS
IMO 9598165
28,378 2011
7.0
E
3134 HORIZON
IMO 9323637
30,803 2007
7.0
E
3135 PRINCESS FAYZAH
IMO 9260859
28,379 2002
7.0
E
3136 PATAGONIA
IMO 9611280
35,964 2012
7.0
E
3137 TASAN
IMO 9404431
38,817 2010
7.0
E
3138 WL PALEKH
IMO 9674397
37,500 2014
7.0
E
3139 UNIGALAXY
IMO 9605188
35,850 2013
7.0
E
3140 CHARLES
IMO 9595175
37,193 2011
7.0
E
3141 ALEXANDROS III
IMO 9575436
32,631 2010
7.0
E
3142 GOLF
IMO 9580120
37,856 2011
7.0
E
3143 BOS BROOK
IMO 9437505
32,688 2010
7.0
E
3144 ID PIONEER
IMO 9665700
35,534 2012
7.0
E
3145 PUNKT
IMO 9296327
28,671 2006
7.0
E
3146 SUNSHINE
IMO 9615028
28,236 2012
7.0
E
3147 ISTANBUL-M
IMO 9450818
36,000 2010
7.0
E
3148 ATLANTIC OCEAN
IMO 9467598
36,009 2010
7.0
E
3149 BARNACLE
IMO 9409742
30,803 2009
7.0
E
3150 GOLDEN EMAN
IMO 9576014
30,347 2010
7.0
E
Page 63 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.