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 |
|---|---|---|---|---|---|
| 1851 |
K.RUBY
IMO 9514042
|
55,688 | 2011 |
4.6
|
C |
| 1852 |
GLOBAL PRIME
IMO 9658941
|
56,013 | 2014 |
4.6
|
C |
| 1853 |
BULK ANTIGUA
IMO 9839818
|
61,602 | 2015 |
4.6
|
C |
| 1854 |
STAR WAVE
IMO 9746009
|
61,491 | 2017 |
4.6
|
C |
| 1855 |
HERCULES
IMO 9642382
|
75,200 | 2013 |
4.6
|
C |
| 1856 |
SSI VICTORY
IMO 9595943
|
56,781 | 2012 |
4.6
|
C |
| 1857 |
XIN HAI TONG 37
IMO 9594597
|
56,539 | 2012 |
4.6
|
C |
| 1858 |
NORD HOUSTON
IMO 9989297
|
40,552 | 2024 |
4.6
|
C |
| 1859 |
RODINA
IMO 9968487
|
45,167 | 2024 |
4.6
|
C |
| 1860 |
AVRA
IMO 9859791
|
61,225 | 2015 |
4.6
|
C |
| 1861 |
AFRICAN CRATE
IMO 9657870
|
39,049 | 2014 |
4.6
|
C |
| 1862 |
WOOYANG HERMES
IMO 9421257
|
54,296 | 2008 |
4.6
|
C |
| 1863 |
AIKATERINI
IMO 9700055
|
63,512 | 2014 |
4.6
|
C |
| 1864 |
GANNET BULKER
IMO 9441300
|
57,809 | 2010 |
4.6
|
C |
| 1865 |
SSI CONQUEST
IMO 9637416
|
57,200 | 2013 |
4.6
|
C |
| 1866 |
ERSOZ KAYE
IMO 9625798
|
57,157 | 2010 |
4.6
|
C |
| 1867 |
RILA
IMO 9754915
|
44,940 | 2017 |
4.6
|
C |
| 1868 |
SEACON BANGKOK
IMO 9991305
|
40,540 | 2024 |
4.6
|
C |
| 1869 |
GULLUK
IMO 9228100
|
50,992 | 2002 |
4.6
|
C |
| 1870 |
SEA EAGLE
IMO 9224673
|
48,377 | 2001 |
4.6
|
C |
| 1871 |
EVER RELIANCE
IMO 9423578
|
57,991 | 2011 |
4.6
|
C |
| 1872 |
FEDERAL WILLIAM PAUL
IMO 9975454
|
34,763 | 2025 |
4.6
|
C |
| 1873 |
ANNA-ELISABETH
IMO 9407471
|
55,709 | 2008 |
4.6
|
C |
| 1874 |
SPAR GEMINI
IMO 9307580
|
53,113 | 2007 |
4.6
|
C |
| 1875 |
ITAMOS
IMO 9929352
|
63,567 | 2022 |
4.6
|
C |
| 1876 |
GIVING
IMO 9159402
|
45,428 | 1997 |
4.6
|
C |
| 1877 |
DEJIMA CONFIDENCE
IMO 9989936
|
40,426 | 2025 |
4.6
|
C |
| 1878 |
XIN HAI TONG 29
IMO 9445681
|
57,295 | 2011 |
4.6
|
C |
| 1879 |
MILIN KAMAK
IMO 9841641
|
45,493 | 2020 |
4.6
|
C |
| 1880 |
CLOVER
IMO 9668386
|
61,377 | 2013 |
4.6
|
C |
| 1881 |
CAPT EUGENE
IMO 9478767
|
55,499 | 2010 |
4.7
|
C |
| 1882 |
EVA BRISTOL
IMO 9856323
|
63,681 | 2021 |
4.7
|
C |
| 1883 |
EMMA JANNEKE
IMO 9992256
|
39,974 | 2024 |
4.7
|
C |
| 1884 |
ROSTRUM DUBAI
IMO 9983243
|
40,004 | 2025 |
4.7
|
C |
| 1885 |
SPAR VEGA
IMO 9490870
|
57,970 | 2011 |
4.7
|
C |
| 1886 |
SHI ZI FENG
IMO 9617466
|
56,605 | 2011 |
4.7
|
C |
| 1887 |
EAGLE
IMO 9490674
|
58,018 | 2010 |
4.7
|
C |
| 1888 |
PRISMA
IMO 9461805
|
57,255 | 2010 |
4.7
|
C |
| 1889 |
OYSTER BAY
IMO 9718636
|
55,100 | 2016 |
4.7
|
C |
| 1890 |
SEA CREDENCE
IMO 9479010
|
55,640 | 2010 |
4.7
|
C |
| 1891 |
YASAR KEMAL
IMO 9230191
|
52,827 | 2001 |
4.7
|
C |
| 1892 |
CORNELIE OLDENDORFF
IMO 9498846
|
93,246 | 2011 |
4.7
|
C |
| 1893 |
INCE BEYLERBEYI
IMO 9599767
|
61,429 | 2012 |
4.7
|
C |
| 1894 |
FALCON ICHIBAN
IMO 1031991
|
39,513 | 2025 |
4.7
|
C |
| 1895 |
EVA ISTANBUL
IMO 9972440
|
40,552 | 2023 |
4.7
|
C |
| 1896 |
AFRICAN WARBLER
IMO 9852717
|
38,209 | 2020 |
4.7
|
C |
| 1897 |
GERDT OLDENDORFF
IMO 9681950
|
80,874 | 2014 |
4.7
|
C |
| 1898 |
ERRIKOS
IMO 9624500
|
56,591 | 2014 |
4.7
|
C |
| 1899 |
JEWEL OF SOHAR
IMO 9514107
|
55,875 | 2011 |
4.7
|
C |
| 1900 |
STAR SOUTHPORT
IMO 9575228
|
63,301 | 2013 |
4.7
|
C |
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.