Bulk Carrier Emissions & Retrofit Radar
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.
CII band distribution
1,301 at D/E4,717 rated vessels · 519 of the D/E set dock within 12 months
Docking pipeline — D/E vessels per quarter
Windows estimated from the class-expiry docking model, not bookings.
Top eligible retrofit measures for this segment
| Measure | Eligible | CO₂ reduction | Capex band | Payback | Confidence |
|---|---|---|---|---|---|
| Propeller redesign / replacement | 4,883 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 4,833 | 2–6% | €300k–900k | — | vendor claim |
| Turbocharger cut-out | 3,664 | 1–3% | €80k–250k | — | vendor claim |
| Rotor sails (per unit) | 3,455 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 3,455 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Methanol dual-fuel conversion | 2,973 | 5–15% | €8,000k–20,000k | — | vendor claim |
Capex bands are indicative vendor/literature priors. Payback appears once price parameters are configured.
Retrofit opportunity in this segment
Retrofit prospects — worst band first
| Vessel | Band | Age | Drop year |
|---|---|---|---|
| STAITHES · 25-60k | E | 12y | 2026 |
| LANNA NAREE · 25-60k | E | 14y | 2026 |
| MAGNOLIA · 25-60k | E | 15y | 2026 |
| ASIAN PRIDE · 60-100k | E | 9y | 2026 |
| PERSEUS · 60-100k | E | 11y | 2026 |
| # | Vessel | Size (DWT) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 805 |
CONTESSA
IMO 9610119
|
81,383 | 2013 |
3.6
|
B |
| 802 |
BUFFALO
IMO 9583160
|
82,177 | 2012 |
3.6
|
B |
| 810 |
PAUL OLDENDORFF
IMO 9540871
|
115,340 | 2011 |
3.6
|
B |
| 809 |
SCARLET EAGLE
IMO 9687693
|
81,842 | 2014 |
3.6
|
B |
| 808 |
GOOFY
IMO 9700782
|
61,271 | 2014 |
3.6
|
B |
| 801 |
KATERINA III
IMO 9500273
|
75,700 | 2011 |
3.6
|
B |
| 807 |
MIGHTY STAR
IMO 9860881
|
81,635 | 2020 |
3.6
|
B |
| 806 |
GOLDEN FROST
IMO 9849899
|
80,559 | 2020 |
3.6
|
B |
| 800 |
DESERT PUMA
IMO 1018078
|
63,654 | 2023 |
3.6
|
B |
| 804 |
TAI KNOWLEDGE
IMO 9799721
|
82,008 | 2017 |
3.6
|
B |
| 811 |
BULK BOLIVIA
IMO 9775139
|
63,465 | 2016 |
3.6
|
B |
| 814 |
CENTURION
IMO 9914371
|
61,050 | 2015 |
3.6
|
B |
| 813 |
RANGER
IMO 9493999
|
82,172 | 2012 |
3.6
|
B |
| 812 |
TOMINI TENACITY
IMO 9831787
|
63,583 | 2020 |
3.6
|
B |
| 820 |
UM JIANGSU
IMO 9982811
|
66,136 | 2025 |
3.6
|
B |
| 817 |
SOYA TIANJIN
IMO 9883754
|
80,780 | 2020 |
3.6
|
B |
| 821 |
SHANDONG XIN RONG
IMO 1026582
|
82,139 | 2025 |
3.6
|
B |
| 816 |
MYRSINI
IMO 9422940
|
82,117 | 2010 |
3.6
|
B |
| 819 |
FJELD SVEA
IMO 9626687
|
81,510 | 2013 |
3.6
|
B |
| 818 |
MFM JAZZ
IMO 1065605
|
63,584 | 2025 |
3.6
|
B |
| 815 |
PAC ANKAA
IMO 9913664
|
63,103 | 2021 |
3.6
|
B |
| 824 |
DIAVOLEZZA
IMO 9694933
|
89,772 | 2013 |
3.6
|
B |
| 823 |
BELMAR
IMO 9908475
|
63,641 | 2021 |
3.6
|
B |
| 822 |
GCL ICON
IMO 9880245
|
82,576 | 2021 |
3.6
|
B |
| 835 |
YU XIAO FENG
IMO 9606431
|
75,398 | 2012 |
3.6
|
B |
| 834 |
NORD NILE
IMO 1049261
|
63,969 | 2025 |
3.6
|
B |
| 836 |
ZHENG LIN
IMO 9323065
|
82,050 | 2007 |
3.6
|
B |
| 833 |
CYMONA ENERGY
IMO 9638173
|
74,867 | 2012 |
3.6
|
B |
| 832 |
HONG SHENG
IMO 9563627
|
76,546 | 2010 |
3.6
|
B |
| 831 |
OCEAN JASMIN
IMO 9723203
|
63,465 | 2019 |
3.6
|
B |
| 830 |
ANTONIA S
IMO 9591088
|
81,462 | 2014 |
3.6
|
B |
| 829 |
MAYE MANX
IMO 9931549
|
63,525 | 2022 |
3.6
|
B |
| 828 |
ST CERGUE
IMO 9775373
|
60,696 | 2017 |
3.6
|
B |
| 827 |
JY SHANGHAI
IMO 9867152
|
81,090 | 2020 |
3.6
|
B |
| 826 |
NIKOLAS D
IMO 9474723
|
80,902 | 2018 |
3.6
|
B |
| 825 |
ELLAN MANX
IMO 9931537
|
63,492 | 2022 |
3.6
|
B |
| 839 |
BULK PRUDENCE
IMO 9713478
|
61,330 | 2014 |
3.6
|
B |
| 838 |
SARA
IMO 9837119
|
80,729 | 2020 |
3.6
|
B |
| 837 |
GENEVA STAR
IMO 9311191
|
75,843 | 2009 |
3.6
|
B |
| 844 |
SANTA IRINI
IMO 9738789
|
77,119 | 2015 |
3.6
|
B |
| 843 |
PORT NAGASAKI
IMO 9965851
|
64,611 | 2021 |
3.6
|
B |
| 845 |
SM HARMONY1
IMO 9842528
|
80,895 | 2020 |
3.6
|
B |
| 842 |
CRETANSEA
IMO 9376373
|
81,508 | 2009 |
3.6
|
B |
| 841 |
INDUS TRIUMPH
IMO 9563938
|
92,967 | 2006 |
3.6
|
B |
| 840 |
JABAL ALMISHT
IMO 9850769
|
63,193 | 2019 |
3.6
|
B |
| 850 |
OCEAN SCALLION
IMO 9592094
|
82,215 | 2013 |
3.6
|
B |
| 849 |
CONCORDIA
IMO 9313292
|
82,499 | 2011 |
3.6
|
B |
| 848 |
ESTELA CLAIRE
IMO 9785615
|
81,886 | 2017 |
3.6
|
B |
| 847 |
STAR SUBARU
IMO 9705160
|
61,571 | 2015 |
3.6
|
B |
| 846 |
PRODIGY
IMO 9661106
|
76,117 | 2013 |
3.6
|
B |
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.