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 |
|---|---|---|---|---|---|
| 1148 |
LEONARDO
IMO 9894777
|
63,676 | 2020 |
3.9
|
B |
| 1147 |
SSI VIGILANT
IMO 9918743
|
63,861 | 2022 |
3.9
|
B |
| 1153 |
SUMMER SKY
IMO 9790830
|
63,415 | 2017 |
3.9
|
B |
| 1157 |
GCL GREECE
IMO 9906477
|
82,299 | 2021 |
3.9
|
B |
| 1159 |
MINOAN GLORY
IMO 9364447
|
74,748 | 2006 |
3.9
|
B |
| 1156 |
SUDESTADA
IMO 9426087
|
93,274 | 2006 |
3.9
|
B |
| 1162 |
FEDERAL PASSION
IMO 9926049
|
42,692 | 2022 |
3.9
|
B |
| 1161 |
CL ZHANJIANG
IMO 9977359
|
64,765 | 2024 |
3.9
|
B |
| 1160 |
TARIEL
IMO 9231303
|
76,623 | 2001 |
3.9
|
B |
| 1155 |
TOKYO PIONEER
IMO 9856294
|
63,686 | 2020 |
3.9
|
B |
| 1154 |
OCEAN GLSR
IMO 9529516
|
56,108 | 2014 |
3.9
|
B |
| 1158 |
MH ARPEGGIO
IMO 9916965
|
61,236 | 2022 |
3.9
|
B |
| 1163 |
STAR COPENHAGEN
IMO 9699359
|
63,495 | 2015 |
3.9
|
B |
| 1164 |
KARO T
IMO 9942108
|
63,520 | 2023 |
3.9
|
B |
| 1167 |
BELMONTE
IMO 9687124
|
81,344 | 2014 |
3.9
|
B |
| 1166 |
PENELOPE I
IMO 9762601
|
81,835 | 2017 |
3.9
|
B |
| 1165 |
GUO YUAN 32
IMO 9591480
|
75,806 | 2013 |
3.9
|
B |
| 1172 |
AXION ESTI
IMO 1025928
|
63,928 | 2025 |
3.9
|
B |
| 1170 |
XIN HAI TONG 809
IMO 9669342
|
75,798 | 2010 |
3.9
|
B |
| 1173 |
STAR SINGAPORE
IMO 9788100
|
63,386 | 2017 |
3.9
|
B |
| 1169 |
GREAT ZHOU
IMO 9766932
|
64,794 | 2017 |
3.9
|
B |
| 1171 |
RG ATHENA
IMO 9314648
|
82,282 | 2007 |
3.9
|
B |
| 1168 |
EQUINOX MELIDA
IMO 9914503
|
61,211 | 2020 |
3.9
|
B |
| 1175 |
CHAILEASE BRIGHT
IMO 9642485
|
76,249 | 2012 |
3.9
|
B |
| 1174 |
STAR MONICA
IMO 9715842
|
60,935 | 2015 |
3.9
|
B |
| 1178 |
ARMERIA
IMO 1041245
|
64,670 | 2025 |
3.9
|
B |
| 1185 |
MEDI ZUOZ
IMO 9789910
|
61,175 | 2013 |
3.9
|
B |
| 1177 |
DESERT FAITH
IMO 9942067
|
63,675 | 2023 |
3.9
|
B |
| 1186 |
ALLIS SERENE
IMO 9425851
|
58,098 | 2011 |
3.9
|
B |
| 1176 |
ASTARTE
IMO 9600645
|
81,513 | 2012 |
3.9
|
B |
| 1183 |
THEMIS
IMO 9594913
|
81,882 | 2012 |
3.9
|
B |
| 1182 |
KMAX LEADER
IMO 9477414
|
91,827 | 2010 |
3.9
|
B |
| 1181 |
PROPEL GRACE
IMO 9605023
|
61,439 | 2012 |
3.9
|
B |
| 1180 |
PEACEFUL SEAS
IMO 9707584
|
63,331 | 2014 |
3.9
|
B |
| 1179 |
PAN HARVEST
IMO 9699335
|
63,577 | 2015 |
3.9
|
B |
| 1184 |
STEFANOS
IMO 9719575
|
81,237 | 2017 |
3.9
|
B |
| 1200 |
DART TRADER
IMO 9566813
|
79,467 | 2006 |
3.9
|
B |
| 1198 |
NEARCHOS
IMO 9852030
|
61,148 | 2019 |
3.9
|
B |
| 1197 |
ADS ARENDAL
IMO 9652507
|
82,908 | 2013 |
3.9
|
B |
| 1196 |
ASTREA
IMO 9705366
|
81,838 | 2015 |
3.9
|
B |
| 1195 |
BELTANGO
IMO 9874284
|
64,061 | 2020 |
3.9
|
B |
| 1194 |
APJ PRIYA 2
IMO 9361196
|
82,298 | 2006 |
3.9
|
B |
| 1193 |
ANDERMATT
IMO 9738791
|
77,113 | 2015 |
3.9
|
B |
| 1192 |
SIKINOS
IMO 9967639
|
63,615 | 2023 |
3.9
|
B |
| 1191 |
HORIZON DIAMOND
IMO 9579066
|
76,048 | 2011 |
3.9
|
B |
| 1190 |
WU ZHU HAI
IMO 9494371
|
76,428 | 2008 |
3.9
|
B |
| 1189 |
LEMESSOS WIND
IMO 9516399
|
76,523 | 2009 |
3.9
|
B |
| 1199 |
HONG YUAN
IMO 9500883
|
76,574 | 2009 |
3.9
|
B |
| 1188 |
LOWLANDS ISLAND
IMO 9984534
|
63,739 | 2023 |
3.9
|
B |
| 1187 |
MAGIC ARIEL
IMO 9855599
|
81,054 | 2020 |
3.9
|
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.