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 · 630 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 | 3,728 | 1–3% | €80k–250k | — | vendor claim |
| Rotor sails (per unit) | 3,512 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 3,512 | 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 |
|---|---|---|---|---|---|
| 149 |
WANG MAY
IMO 9837327
|
180,682 | 2019 |
2.6
|
A |
| 154 |
MARAN GUARDIAN
IMO 9434369
|
179,701 | 2010 |
2.6
|
A |
| 153 |
MARAN MARINER
IMO 9439072
|
179,700 | 2011 |
2.6
|
A |
| 152 |
EUROPE
IMO 9522087
|
179,448 | 2010 |
2.6
|
A |
| 155 |
CLIMATE PLEDGE
IMO 9932749
|
87,324 | 2022 |
2.7
|
A |
| 156 |
SHANDONG DE YUN
IMO 9872080
|
180,620 | 2020 |
2.7
|
A |
| 159 |
BOUNTY DIVA
IMO 9959785
|
87,396 | 2023 |
2.7
|
A |
| 158 |
GCL GODAVARI
IMO 9939929
|
120,278 | 2021 |
2.7
|
A |
| 157 |
AOM MARIA LAURA
IMO 9911410
|
82,312 | 2021 |
2.7
|
A |
| 160 |
MARILOULA
IMO 9434553
|
179,759 | 2008 |
2.7
|
A |
| 163 |
PEDHOULAS TRADER
IMO 9980629
|
82,018 | 2023 |
2.7
|
A |
| 162 |
LILA GONDPUR
IMO 9596325
|
180,144 | 2011 |
2.7
|
A |
| 161 |
WOOYANG BELOS
IMO 9767558
|
63,590 | 2016 |
2.7
|
A |
| 164 |
BULK PENINSULA
IMO 9839014
|
182,983 | 2019 |
2.7
|
A |
| 165 |
GREAT FLOURISH
IMO 9988346
|
82,811 | 2024 |
2.7
|
A |
| 168 |
HT HUANG SHAN
IMO 9410404
|
180,220 | 2009 |
2.7
|
A |
| 167 |
CLIVIA OLDENDORFF
IMO 9599195
|
98,704 | 2013 |
2.7
|
A |
| 166 |
FRONTIER JACARANDA
IMO 9552393
|
182,757 | 2011 |
2.7
|
A |
| 172 |
MINERAL FAITH
IMO 9575668
|
175,620 | 2006 |
2.7
|
A |
| 171 |
FIRANDO
IMO 9965772
|
82,239 | 2023 |
2.7
|
A |
| 170 |
GCL MAHI
IMO 9939955
|
120,320 | 2023 |
2.7
|
A |
| 169 |
BULK TIRRENO
IMO 9624263
|
181,366 | 2013 |
2.7
|
A |
| 173 |
NORD EAGLE
IMO 1060485
|
87,359 | 2025 |
2.7
|
A |
| 175 |
LOWLANDS CENTURY
IMO 9953781
|
82,706 | 2024 |
2.7
|
A |
| 174 |
HELLASSHIP
IMO 9574236
|
181,325 | 2012 |
2.7
|
A |
| 177 |
ERATO
IMO 9446075
|
180,120 | 2010 |
2.7
|
A |
| 176 |
TRUE CRUSADER
IMO 9693587
|
179,656 | 2016 |
2.7
|
A |
| 179 |
MSXT EMILY
IMO 9929302
|
85,267 | 2020 |
2.7
|
A |
| 178 |
NAVIOS CORAL
IMO 9774264
|
84,904 | 2016 |
2.7
|
A |
| 180 |
IONIAN SEA
IMO 9900203
|
82,561 | 2021 |
2.7
|
A |
| 185 |
HSL BUNBURY
IMO 9980966
|
82,802 | 2024 |
2.7
|
A |
| 184 |
SAVINA
IMO 9427316
|
176,382 | 2011 |
2.7
|
A |
| 181 |
CAPE SUNRISE
IMO 9605009
|
181,422 | 2012 |
2.7
|
A |
| 183 |
RICHMOND
IMO 9511466
|
175,800 | 2010 |
2.7
|
A |
| 182 |
VOLTA
IMO 9587362
|
177,066 | 2010 |
2.7
|
A |
| 187 |
AMMOXOSTOS
IMO 9961427
|
82,114 | 2024 |
2.7
|
A |
| 186 |
SAKIZAYA YOUTH
IMO 9913028
|
82,501 | 2022 |
2.7
|
A |
| 192 |
JEN LR
IMO 9947249
|
82,411 | 2023 |
2.8
|
A |
| 194 |
SIVOTA
IMO 9363039
|
177,804 | 2008 |
2.8
|
A |
| 188 |
ALBA
IMO 9493755
|
175,232 | 2012 |
2.8
|
A |
| 193 |
PACIFIC IRIS
IMO 1073652
|
82,892 | 2025 |
2.8
|
A |
| 191 |
PHAR LAP
IMO 9590694
|
179,276 | 2011 |
2.8
|
A |
| 190 |
MINERAL NEW YORK
IMO 9519767
|
175,841 | 2006 |
2.8
|
A |
| 189 |
MARAN EXCELLENCE
IMO 9703241
|
180,940 | 2016 |
2.8
|
A |
| 195 |
SAKIZAYA VICTORY
IMO 9892688
|
82,418 | 2021 |
2.8
|
A |
| 196 |
CSSC GLADSTONE
IMO 9853917
|
120,633 | 2021 |
2.8
|
A |
| 200 |
MARAN VIRTUE
IMO 9440332
|
180,391 | 2012 |
2.8
|
A |
| 199 |
OMAHA
IMO 9363041
|
177,805 | 2008 |
2.8
|
A |
| 198 |
DUCHESS EMERALD
IMO 9968360
|
82,464 | 2024 |
2.8
|
A |
| 197 |
CPT GEORGIOS S
IMO 9262936
|
74,127 | 2002 |
2.8
|
A |
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.