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 |
|---|---|---|---|---|---|
| 1253 |
THOR MAXIMUS
IMO 9291391
|
55,695 | 2005 |
4.0
|
B |
| 1252 |
ZHENG JUN
IMO 9593804
|
81,810 | 2013 |
4.0
|
B |
| 1251 |
PEACE GEM
IMO 9663348
|
76,433 | 2012 |
4.0
|
B |
| 1254 |
MONTEVIDEO I
IMO 9935818
|
61,130 | 2021 |
4.0
|
B |
| 1256 |
TON HIL II
IMO 9643180
|
56,047 | 2014 |
4.0
|
B |
| 1255 |
LOWLANDS HOPE
IMO 9727182
|
60,063 | 2016 |
4.0
|
B |
| 1259 |
NKR ALICE
IMO 9914515
|
61,217 | 2020 |
4.0
|
B |
| 1264 |
GENCO HORNET
IMO 9721932
|
63,574 | 2014 |
4.0
|
B |
| 1258 |
SAGAR SAMRAT
IMO 9727041
|
76,404 | 2015 |
4.0
|
B |
| 1266 |
PACIFIC DIVA
IMO 9883106
|
63,667 | 2020 |
4.0
|
B |
| 1265 |
LA STELLA
IMO 9748368
|
61,286 | 2012 |
4.0
|
B |
| 1257 |
MH ADAGIO
IMO 9916977
|
61,206 | 2022 |
4.0
|
B |
| 1263 |
CASTOR
IMO 9370197
|
78,888 | 2008 |
4.0
|
B |
| 1262 |
MARO MARO
IMO 9553725
|
61,143 | 2022 |
4.0
|
B |
| 1261 |
SEA DIAMOND I
IMO 9364825
|
53,483 | 2006 |
4.0
|
B |
| 1260 |
ULTRA INCAHUASI
IMO 9853084
|
62,435 | 2014 |
4.0
|
B |
| 1274 |
PANASIATIC
IMO 9310276
|
82,962 | 2005 |
4.0
|
B |
| 1277 |
ELENI
IMO 9411525
|
86,949 | 2008 |
4.0
|
B |
| 1273 |
TRAVERSE ANTWERP
IMO 9330317
|
77,075 | 2005 |
4.0
|
B |
| 1275 |
NEWSEAS CRYSTAL
IMO 9644835
|
63,548 | 2011 |
4.0
|
B |
| 1272 |
ZHENG HUI
IMO 9596105
|
81,797 | 2014 |
4.0
|
B |
| 1271 |
YEOMAN BONTRUP
IMO 8912297
|
96,772 | 1991 |
4.0
|
B |
| 1270 |
CANOPUS
IMO 9843443
|
80,992 | 2021 |
4.0
|
B |
| 1269 |
EVER BEST
IMO 9607837
|
81,717 | 2013 |
4.0
|
B |
| 1268 |
ELIM JOYCE
IMO 9340506
|
58,790 | 2007 |
4.0
|
B |
| 1267 |
W-ACE
IMO 9484687
|
93,015 | 2011 |
4.0
|
B |
| 1276 |
FJ STAR
IMO 9797682
|
61,225 | 2016 |
4.0
|
B |
| 1278 |
FEDERAL OSAKA
IMO 9853436
|
60,467 | 2020 |
4.0
|
B |
| 1281 |
GW MATHILDE
IMO 9874650
|
63,592 | 2020 |
4.0
|
B |
| 1280 |
ALLIANCE
IMO 9552824
|
83,369 | 2010 |
4.0
|
B |
| 1279 |
SYLVIA
IMO 9471264
|
80,282 | 2010 |
4.0
|
B |
| 1284 |
HONG JING
IMO 9363649
|
82,354 | 2008 |
4.0
|
B |
| 1283 |
ALEXANDROS PETRAKIS
IMO 9442938
|
76,596 | 2008 |
4.0
|
B |
| 1282 |
GLORIA
IMO 9313307
|
82,464 | 2011 |
4.0
|
B |
| 1287 |
KERKYRA
IMO 9607162
|
81,375 | 2010 |
4.0
|
B |
| 1289 |
LU XIANG
IMO 9407524
|
55,429 | 2009 |
4.0
|
B |
| 1288 |
MENARO
IMO 9718002
|
81,061 | 2013 |
4.0
|
B |
| 1286 |
CHRISTINA V
IMO 9760055
|
66,653 | 2018 |
4.0
|
B |
| 1285 |
GENCO MARY
IMO 9923205
|
61,085 | 2022 |
4.0
|
B |
| 1294 |
INDIAN HARMONY
IMO 9626651
|
75,385 | 2013 |
4.0
|
B |
| 1293 |
GUO QIANG 8
IMO 9722065
|
63,376 | 2018 |
4.0
|
B |
| 1292 |
LAURA
IMO 9700665
|
63,377 | 2015 |
4.0
|
B |
| 1291 |
DE XIN HAI
IMO 9364758
|
76,432 | 2008 |
4.0
|
B |
| 1290 |
ARIES KARIN
IMO 9894478
|
64,229 | 2021 |
4.0
|
B |
| 1300 |
ZHENG KAI
IMO 9593787
|
81,877 | 2012 |
4.0
|
B |
| 1299 |
STAR HALIFAX
IMO 9855862
|
63,614 | 2020 |
4.0
|
B |
| 1298 |
WORLD PRIZE
IMO 9860403
|
62,496 | 2021 |
4.0
|
B |
| 1297 |
W-OSLO
IMO 9484699
|
92,997 | 2011 |
4.0
|
B |
| 1296 |
IOKASTI GS
IMO 9748722
|
55,857 | 2016 |
4.0
|
B |
| 1295 |
FAMIGLIA
IMO 9979199
|
63,425 | 2023 |
4.0
|
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.