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 |
|---|---|---|---|---|---|
| 301 |
MINIMATA
IMO 9952464
|
82,202 | 2023 |
3.0
|
A |
| 303 |
ULTRA MARGAY
IMO 9871206
|
81,921 | 2020 |
3.0
|
A |
| 302 |
BARDONNEX
IMO 9566590
|
107,235 | 2013 |
3.0
|
A |
| 304 |
GERASIMOS
IMO 9510333
|
82,153 | 2011 |
3.0
|
A |
| 307 |
OPAL WEALTH
IMO 1016496
|
64,241 | 2025 |
3.0
|
A |
| 306 |
LOWLANDS TEAL
IMO 9853060
|
95,823 | 2020 |
3.0
|
A |
| 305 |
FJ IRIS
IMO 9958884
|
82,792 | 2023 |
3.0
|
A |
| 310 |
KYPROS BRAVERY
IMO 9694490
|
77,997 | 2015 |
3.0
|
A |
| 309 |
SAKIZAYA HERO
IMO 9780134
|
80,962 | 2016 |
3.0
|
A |
| 308 |
BTG ULRIKEN
IMO 9887346
|
82,456 | 2020 |
3.0
|
A |
| 315 |
STAR THETIS
IMO 9964895
|
66,327 | 2024 |
3.0
|
A |
| 314 |
NORDIC QINNGUA
IMO 9884978
|
95,758 | 2021 |
3.0
|
A |
| 313 |
MYSTIC
IMO 9421831
|
169,879 | 2008 |
3.0
|
A |
| 312 |
EMERALD SHENGSI
IMO 9981300
|
85,594 | 2024 |
3.0
|
A |
| 311 |
ETG HAYATE
IMO 9919967
|
81,957 | 2020 |
3.0
|
A |
| 317 |
PEDHOULAS CEDRUS
IMO 9758416
|
81,802 | 2018 |
3.0
|
A |
| 316 |
SARAH
IMO 9841172
|
81,112 | 2018 |
3.0
|
A |
| 320 |
MANDY
IMO 9582831
|
180,371 | 2010 |
3.0
|
A |
| 324 |
MEA MARE
IMO 9976630
|
64,035 | 2024 |
3.0
|
A |
| 323 |
ELATOS
IMO 1030856
|
82,050 | 2025 |
3.0
|
A |
| 325 |
BTG APO
IMO 9887358
|
82,442 | 2021 |
3.0
|
A |
| 322 |
ORMOS
IMO 9837298
|
81,944 | 2019 |
3.0
|
A |
| 321 |
NORDIC SIKU
IMO 9895800
|
95,758 | 2021 |
3.0
|
A |
| 319 |
GEMMA
IMO 9602784
|
313,049 | 2012 |
3.0
|
A |
| 318 |
SAKIZAYA ZEST
IMO 9913030
|
82,501 | 2022 |
3.0
|
A |
| 329 |
GLORIOUS SKY
IMO 9582946
|
81,893 | 2015 |
3.0
|
A |
| 331 |
SEAGEM
IMO 9758375
|
81,714 | 2019 |
3.0
|
A |
| 328 |
NORDIC SANNGIJUQ
IMO 9895795
|
95,758 | 2021 |
3.0
|
A |
| 327 |
ATHENS
IMO 9618824
|
180,012 | 2012 |
3.0
|
A |
| 326 |
VELOS LIBRA
IMO 9710799
|
77,134 | 2014 |
3.0
|
A |
| 330 |
VOLUTINA
IMO 9929338
|
82,408 | 2022 |
3.0
|
A |
| 334 |
AOM ELENA
IMO 9970246
|
82,550 | 2024 |
3.0
|
A |
| 336 |
NAVIOS HERAKLES I
IMO 9852937
|
82,036 | 2019 |
3.0
|
A |
| 333 |
SASEBO ECO
IMO 9675456
|
77,888 | 2014 |
3.0
|
A |
| 338 |
SAKIZAYA STAR
IMO 9861316
|
82,516 | 2020 |
3.0
|
A |
| 337 |
BTG FUJI
IMO 9731846
|
81,069 | 2016 |
3.0
|
A |
| 332 |
BW OSAKA
IMO 9836567
|
81,796 | 2020 |
3.0
|
A |
| 335 |
STAR CALYPSO
IMO 9634842
|
81,918 | 2014 |
3.0
|
A |
| 340 |
NORD ACE
IMO 1027330
|
87,404 | 2024 |
3.0
|
A |
| 341 |
EPIC RADIANCE
IMO 9970234
|
82,555 | 2024 |
3.0
|
A |
| 339 |
KATAGALAN ACE
IMO 9950521
|
82,680 | 2023 |
3.0
|
A |
| 344 |
MG HAMMOND
IMO 9748045
|
84,858 | 2016 |
3.0
|
A |
| 343 |
LOWLANDS SKY
IMO 9933262
|
82,281 | 2023 |
3.0
|
A |
| 342 |
AURORA BOREALIS
IMO 9957608
|
82,315 | 2023 |
3.0
|
A |
| 350 |
ANNA G.
IMO 9701310
|
81,004 | 2014 |
3.1
|
A |
| 349 |
MSC CARINA
IMO 9625944
|
104,183 | 2013 |
3.1
|
A |
| 348 |
CHRISTINA B
IMO 9304162
|
77,053 | 2007 |
3.1
|
A |
| 347 |
SAKIZAYA MIRACLE
IMO 9768019
|
81,668 | 2017 |
3.1
|
A |
| 346 |
ARIETTA LILY
IMO 9727479
|
81,773 | 2017 |
3.1
|
A |
| 345 |
LADY I
IMO 9336610
|
75,356 | 2007 |
3.1
|
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.