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 |
|---|---|---|---|---|---|
| 1801 |
VIRGO STELLAR
IMO 9384540
|
58,663 | 2008 |
4.5
|
C |
| 1802 |
BUBBA BOOSH
IMO 9674218
|
55,464 | 2014 |
4.5
|
C |
| 1803 |
HAWK S
IMO 1082782
|
40,576 | 2025 |
4.5
|
C |
| 1804 |
BBG MASTER
IMO 9721982
|
63,650 | 2016 |
4.5
|
C |
| 1805 |
BIRDIE
IMO 9726243
|
60,269 | 2015 |
4.5
|
C |
| 1806 |
SIIRT
IMO 9644196
|
63,200 | 2013 |
4.5
|
C |
| 1807 |
TAI HOMAGE
IMO 1014931
|
39,983 | 2022 |
4.5
|
C |
| 1808 |
CAPE KOURION
IMO 9481441
|
79,463 | 2006 |
4.5
|
C |
| 1809 |
XIN HAI TONG 38
IMO 9622784
|
56,635 | 2011 |
4.5
|
C |
| 1810 |
AL MAQAM
IMO 9672040
|
63,155 | 2014 |
4.5
|
C |
| 1811 |
JNS FRIENDSHIP
IMO 1061520
|
40,537 | 2024 |
4.5
|
C |
| 1812 |
SUN PLENTY
IMO 9423554
|
58,729 | 2009 |
4.5
|
C |
| 1813 |
ARIS T
IMO 9343895
|
92,524 | 2007 |
4.5
|
C |
| 1814 |
FEDERAL TRIDENT
IMO 9658977
|
55,178 | 2016 |
4.5
|
C |
| 1815 |
SEABONI
IMO 9688647
|
62,657 | 2015 |
4.5
|
C |
| 1816 |
PMS SEAGULL
IMO 9614971
|
61,358 | 2012 |
4.5
|
C |
| 1817 |
MALAK
IMO 9446702
|
56,942 | 2010 |
4.5
|
C |
| 1818 |
GUARDIAN
IMO 9714692
|
61,202 | 2013 |
4.6
|
C |
| 1819 |
GREAT VISION
IMO 9728681
|
63,376 | 2016 |
4.6
|
C |
| 1820 |
YASA BEGONIA
IMO 9991654
|
40,541 | 2025 |
4.6
|
C |
| 1821 |
AZUL
IMO 9726504
|
63,253 | 2014 |
4.6
|
C |
| 1822 |
MUSALA
IMO 9937294
|
32,223 | 2023 |
4.6
|
C |
| 1823 |
SHARP ISLAND
IMO 9748370
|
61,244 | 2016 |
4.6
|
C |
| 1824 |
STEEL C
IMO 9700330
|
63,118 | 2015 |
4.6
|
C |
| 1825 |
THOR CALIBER
IMO 9440928
|
58,732 | 2008 |
4.6
|
C |
| 1826 |
SHENG HENG HAI
IMO 9505493
|
56,649 | 2013 |
4.6
|
C |
| 1827 |
NEW EXCELLENCE
IMO 9502594
|
79,449 | 2014 |
4.6
|
C |
| 1828 |
COOPER ISLAND
IMO 9668910
|
57,905 | 2014 |
4.6
|
C |
| 1829 |
KANG HONG
IMO 9323558
|
55,589 | 2005 |
4.6
|
C |
| 1830 |
W-SAPPHIRE
IMO 9605645
|
81,681 | 2012 |
4.6
|
C |
| 1831 |
IONIAN CHALLENGER
IMO 9461350
|
82,245 | 2010 |
4.6
|
C |
| 1832 |
LEMESSOS NAPA
IMO 9741293
|
77,998 | 2014 |
4.6
|
C |
| 1833 |
RED FIN
IMO 9607306
|
56,780 | 2011 |
4.6
|
C |
| 1834 |
FEDERAL TAKASE
IMO 9658989
|
55,178 | 2011 |
4.6
|
C |
| 1835 |
XIN HAI TONG 802
IMO 9603972
|
81,610 | 2012 |
4.6
|
C |
| 1836 |
XIN AN YUAN
IMO 9407873
|
55,277 | 2009 |
4.6
|
C |
| 1837 |
ANNA SMILE
IMO 9280770
|
74,823 | 2004 |
4.6
|
C |
| 1838 |
OAK BAY
IMO 9652557
|
55,845 | 2013 |
4.6
|
C |
| 1839 |
VELA PRIME
IMO 9218272
|
73,105 | 2001 |
4.6
|
C |
| 1840 |
SKYWALKER
IMO 9724740
|
63,350 | 2015 |
4.6
|
C |
| 1841 |
NORSE OMISHIMA
IMO 9990674
|
40,006 | 2025 |
4.6
|
C |
| 1842 |
BROAD GLORY
IMO 9324643
|
52,415 | 2006 |
4.6
|
C |
| 1843 |
WARRIOR
IMO 1014838
|
40,053 | 2024 |
4.6
|
C |
| 1844 |
GLOBAL PRIME
IMO 9658941
|
56,013 | 2014 |
4.6
|
C |
| 1845 |
HERCULES
IMO 9642382
|
75,200 | 2013 |
4.6
|
C |
| 1846 |
BULK ANTIGUA
IMO 9839818
|
61,602 | 2015 |
4.6
|
C |
| 1847 |
STAR WAVE
IMO 9746009
|
61,491 | 2017 |
4.6
|
C |
| 1848 |
SEARIDER
IMO 9698953
|
62,690 | 2015 |
4.6
|
C |
| 1849 |
LEONIDAS
IMO 9696474
|
63,459 | 2017 |
4.6
|
C |
| 1850 |
K.RUBY
IMO 9514042
|
55,688 | 2011 |
4.6
|
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.