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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)
#3,020 of 3,531 bulk carriers
CO₂ intensity
6.7 g CO₂/dwt·nm
vs segment average (4.87)
+37% higher
E
Bulk Carrier Container Ship Oil Tanker Chemical Tanker Gas Carrier LNG Carrier General Cargo Vehicle Carrier Refrigerated Cargo Ro-Ro Cargo
Sort 🌱 Greenest first 🔧 Least efficient first — retrofit candidates
Size (DWT)
All sizes < 25,000 DWT 25k – 60k DWT 60k – 100k DWT 100k – 200k DWT > 200,000 DWT
Year
2025 2024
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
3001 ISABELLE G
IMO 9285938
 37,193 2004
6.6
E
3002 LUDOGORETS
IMO 9415155
 29,998 2010
6.6
E
3003 ORIENT PACE
IMO 9450753
 34,390 2007
6.6
E
3004 BC GRACE
IMO 9561887
 29,637 2011
6.6
E
3005 LAGO DI LEDRO
IMO 9471654
 37,390 2012
6.6
E
3006 MJ PINAR
IMO 9406051
 30,487 2009
6.6
E
3007 ASTRO ORION
IMO 9767326
 37,347 2017
6.6
E
3008 C TIGER
IMO 9583706
 35,693 2011
6.6
E
3009 PURE MERCY
IMO 9277474
 32,759 2005
6.6
E
3010 ADELINA
IMO 9595785
 35,072 2012
6.6
E
3011 TOMKAR
IMO 9180372
 34,948 1999
6.6
E
3012 ALIKI FORCE
IMO 9498559
 58,419 2011
6.7
E
3013 BLISS
IMO 9370331
 35,278 2007
6.7
E
3014 LILA
IMO 9278923
 28,678 2003
6.7
E
3015 ELISAR
IMO 9595747
 36,817 2011
6.7
E
3016 KEN BREEZE
IMO 9636383
 37,148 2012
6.7
E
3017 AGROPROSPERIS 1
IMO 9516703
 35,757 2010
6.7
E
3018 OSMAN BEY
IMO 9111357
 27,321 1995
6.7
E
3019 LADY LITEL
IMO 9571428
 33,789 2013
6.7
E
3020 LOWLANDS SHARK
IMO 9674787
 36,309 2015
6.7
E
3021 MARINA L
IMO 9675705
 28,384 2014
6.7
E
3022 STRANDJA
IMO 9564140
 30,683 2010
6.7
E
3023 FEDERAL KIBUNE
IMO 9606053
 36,824 2010
6.7
E
3024 ES CARE
IMO 9708930
 35,510 2015
6.7
E
3025 POLESIE
IMO 9488097
 38,056 2009
6.7
E
3026 PREDATOR
IMO 9641792
 28,348 2013
6.7
E
3027 AVELLANEDA
IMO 9571636
 34,938 2013
6.7
E
3028 NANA LEEN
IMO 9113850
 28,300 1995
6.7
E
3029 BUNUN WISDOM
IMO 9628568
 38,168 2012
6.7
E
3030 MAPLE AMBITION
IMO 9760354
 35,513 2015
6.7
E
3031 GLADIATOR
IMO 9445033
 28,341 2008
6.7
E
3032 SOFIA R
IMO 9530967
 36,093 2012
6.7
E
3033 ARGO B
IMO 9459371
 35,314 2010
6.7
E
3034 JALMA TOPIC
IMO 9309655
 51,966 2006
6.7
E
3035 TSL ROSEMARY
IMO 9527192
 33,191 2012
6.7
E
3036 KOSZALIN
IMO 9594236
 37,930 2012
6.7
E
3037 GAT FATHER
IMO 9764013
 35,737 2016
6.7
E
3038 FEDERAL NAKAGAWA
IMO 9278791
 36,489 2005
6.7
E
3039 YANNIS GORGIAS
IMO 9423293
 87,375 2010
6.7
E
3040 LOWLANDS CORSO
IMO 9959450
 40,039 2023
6.7
E
3041 YALOUSSA
IMO 9464546
 28,361 2008
6.7
E
3042 CLEANTEC
IMO 9473418
 33,344 2009
6.7
E
3043 HELENA G
IMO 9358383
 37,251 2007
6.7
E
3044 EVRIALI
IMO 9405435
 53,554 2007
6.7
E
3045 FEDERICA
IMO 9612313
 36,781 2012
6.7
E
3046 WHISTLER
IMO 9358371
 37,272 2007
6.7
E
3047 BUNUN STAR
IMO 9912440
 37,301 2022
6.7
E
3048 MATIN BEY
IMO 9082623
 26,477 1996
6.7
E
3049 WADI ALKARM
IMO 9460760
 80,533 2011
6.7
E
3050 ARIETTA
IMO 9545065
 35,083 2012
6.7
E
Page 61 of 71 — 3,531 vessels
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Engine intelligence

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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.