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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 2025. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2025)
#2,112 of 3,436 bulk carriers
CO₂ intensity
4.9 g CO₂/dwt·nm
vs segment average (4.71)
+4% higher
D
3,507
vessels ranked
1.74
greenest (g CO₂/t·nm)
4.46
segment median
# Vessel Size (DWT) Built Carbon intensity — AER (g CO₂/dwt·nm) Grade
2101 NITAYA NAREE
IMO 9700031
39,266 2015
4.9
D
2102 DESERT RANGER
IMO 9699854
61,146 2017
4.9
D
2103 FEDERAL CHAMPLAIN
IMO 9671058
34,564 2016
4.9
D
2104 LOWLANDS LAMBIK
IMO 9970208
42,402 2024
4.9
D
2105 UNION TRADER
IMO 9989314
40,552 2025
4.9
D
2106 MY DREAM
IMO 9300295
54,043 2006
4.9
D
2107 SN SERENITY
IMO 9736420
36,228 2016
4.9
D
2108 PARABOLICA
IMO 9979503
40,387 2024
4.9
D
2109 LIGNUM MATRIX
IMO 9973042
42,540 2023
4.9
D
2110 ORION OCEAN
IMO 9738935
61,321 2015
4.9
D
2111 KINGFISHER
IMO 9441348
57,809 2010
4.9
D
2112 AEOLOS
IMO 9670901
63,434 2015
4.9
D
2113 ALERCE
IMO 9942043
37,967 2015
4.9
D
2114 FLORA SCHULTE
IMO 9841938
39,874 2015
4.9
D
2115 ASH ATLANTIC
IMO 9470844
28,352 2008
4.9
D
2116 YANGTZE HARMONY
IMO 9618355
56,763 2012
4.9
D
2117 JINLING CONFIDENCE
IMO 9798337
40,320 2017
4.9
D
2118 SUPRA SOVEREIGN
IMO 9478860
55,598 2012
4.9
D
2119 KIATING
IMO 9893802
37,391 2021
4.9
D
2120 ASTRO NEMBUS
IMO 9730452
63,510 2017
4.9
D
2121 NAVISION VINCENTZ
IMO 9681871
39,855 2014
4.9
D
2122 MARGATE
IMO 9979486
40,547 2024
4.9
D
2123 SUPRA MONARCH
IMO 9479046
55,628 2011
4.9
D
2124 NAN XIN 27
IMO 9358838
74,483 2006
4.9
D
2125 VICTORIAN TRADER
IMO 9945526
40,200 2023
4.9
D
2126 BH OCEAN
IMO 9218416
32,845 2001
4.9
D
2127 FEDERAL TWEED
IMO 9658898
55,317 2013
4.9
D
2128 JOKER
IMO 9448578
57,982 2012
4.9
D
2129 AGAPI S
IMO 9514822
62,145 2012
4.9
D
2130 SSI MAJESTY
IMO 9478913
55,694 2010
4.9
D
2131 EVA OLDENDORFF
IMO 9707754
39,202 2016
4.9
D
2132 MYKONOS DAWN
IMO 9762481
37,880 2017
4.9
D
2133 SSI INVINCIBLE II
IMO 9434747
56,815 2012
4.9
D
2134 PEKIN
IMO 9721566
39,777 2016
5.0
D
2135 PUMA
IMO 9748265
34,979 2017
5.0
D
2136 YASA TOKYO
IMO 9948255
37,402 2023
5.0
D
2137 SAMSUN
IMO 9657777
63,200 2013
5.0
D
2138 LILA MUNDRA
IMO 9441881
57,269 2009
5.0
D
2139 ARUNA ISMAIL
IMO 9637296
55,484 2013
5.0
D
2140 G TAISHAN
IMO 9440992
58,780 2008
5.0
D
2141 DIAMOND SEA
IMO 9468152
55,437 2011
5.0
D
2142 UNITY
IMO 9370044
56,017 2007
5.0
D
2143 KIRAN ISTANBUL
IMO 9576973
63,610 2013
5.0
D
2144 JNS PROSPERITY
IMO 1068982
40,500 2025
5.0
D
2145 OTZIAS
IMO 9594418
56,720 2012
5.0
D
2146 W-PACIFIC
IMO 9596650
81,233 2013
5.0
D
2147 EVER PROGRESS
IMO 9627033
56,592 2012
5.0
D
2148 AMIS GLORY
IMO 9731535
55,474 2016
5.0
D
2149 GOLDENEYE
IMO 9637131
35,949 2014
5.0
D
2150 JUNNING
IMO 9232175
53,806 2003
5.0
D
Page 43 of 69 — 3,436 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 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.

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.