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 |
|---|---|---|---|---|---|
| 1302 |
IOKASTI GS
IMO 9748722
|
55,857 | 2016 |
4.0
|
B |
| 1301 |
FARMER
IMO 9589267
|
81,541 | 2012 |
4.0
|
B |
| 1305 |
PORT VERA CRUZ
IMO 9759680
|
63,558 | 2014 |
4.0
|
B |
| 1304 |
OGBA
IMO 9724001
|
63,488 | 2015 |
4.0
|
B |
| 1306 |
NAVIOS AVIOR
IMO 9590084
|
81,355 | 2012 |
4.0
|
B |
| 1303 |
EQUINOX ORENDA
IMO 9572082
|
58,689 | 2012 |
4.0
|
B |
| 1307 |
GREEN K-MAX 3
IMO 9838072
|
80,883 | 2020 |
4.0
|
B |
| 1311 |
AOM GAIA
IMO 9623702
|
82,009 | 2014 |
4.0
|
B |
| 1310 |
AH GLOBE
IMO 9294111
|
74,432 | 2005 |
4.0
|
B |
| 1309 |
GENCO MAGIC
IMO 9707364
|
63,497 | 2014 |
4.0
|
B |
| 1308 |
ARUNA CENGIZ
IMO 9552331
|
58,677 | 2012 |
4.0
|
B |
| 1315 |
ELWAY
IMO 9591806
|
81,911 | 2012 |
4.0
|
B |
| 1317 |
THOR CHAIYO
IMO 9403140
|
58,731 | 2008 |
4.0
|
B |
| 1314 |
AMIS CHAMPION
IMO 9636369
|
60,830 | 2014 |
4.0
|
B |
| 1321 |
WEN ZHU HAI
IMO 9488475
|
76,381 | 2008 |
4.0
|
B |
| 1320 |
GOLDEN OPAL
IMO 9470404
|
74,232 | 2017 |
4.0
|
B |
| 1318 |
TRANS AFRICA
IMO 9768239
|
81,271 | 2017 |
4.0
|
B |
| 1313 |
DESERT GRACE
IMO 9849502
|
63,553 | 2015 |
4.0
|
B |
| 1319 |
ZHENG HENG
IMO 9593799
|
81,948 | 2012 |
4.0
|
B |
| 1312 |
AC OREN
IMO 9491214
|
56,877 | 2010 |
4.0
|
B |
| 1316 |
DESERT PIONEER
IMO 9899193
|
61,000 | 2019 |
4.0
|
B |
| 1327 |
BUZLUDJA
IMO 9835783
|
47,110 | 2019 |
4.0
|
B |
| 1326 |
PACIFIC VICTORY
IMO 9731896
|
63,508 | 2017 |
4.0
|
B |
| 1328 |
ATHINA III
IMO 9247285
|
73,305 | 2004 |
4.0
|
B |
| 1325 |
INTHIRA NAREE
IMO 9732199
|
63,800 | 2012 |
4.0
|
B |
| 1337 |
ULUSOY-12
IMO 9586423
|
79,403 | 2011 |
4.0
|
B |
| 1336 |
SYROS I
IMO 9597800
|
81,393 | 2011 |
4.0
|
B |
| 1324 |
WESTERN STABAEK
IMO 9989273
|
40,553 | 2024 |
4.0
|
B |
| 1335 |
TIGER SOUTH
IMO 9619854
|
76,255 | 2013 |
4.0
|
B |
| 1334 |
MITSOS
IMO 9637210
|
63,526 | 2013 |
4.0
|
B |
| 1333 |
THOR COURAGE
IMO 9440978
|
58,693 | 2009 |
4.0
|
B |
| 1332 |
GRIZZLY
IMO 9659232
|
81,394 | 2013 |
4.0
|
B |
| 1331 |
N AMALTHIA
IMO 9364277
|
75,356 | 2006 |
4.0
|
B |
| 1330 |
MAGIC MARS
IMO 9691400
|
76,822 | 2014 |
4.0
|
B |
| 1329 |
SAKIZAYA UNICORN
IMO 9892676
|
82,527 | 2021 |
4.0
|
B |
| 1323 |
NORTHERN VENTURE
IMO 9978779
|
64,621 | 2024 |
4.0
|
B |
| 1322 |
MENELAOS
IMO 9696436
|
63,458 | 2015 |
4.0
|
B |
| 1338 |
STAR GROTON
IMO 9575242
|
63,301 | 2013 |
4.0
|
B |
| 1350 |
GALIO
IMO 9633408
|
81,404 | 2013 |
4.0
|
B |
| 1349 |
SINCERE SMART
IMO 9311177
|
75,884 | 2007 |
4.0
|
B |
| 1348 |
THETIS
IMO 9738208
|
63,205 | 2015 |
4.0
|
B |
| 1347 |
LINDEN ARROW
IMO 9552953
|
55,861 | 2013 |
4.0
|
B |
| 1346 |
FU RONG FENG
IMO 9523184
|
75,444 | 2011 |
4.0
|
B |
| 1345 |
LUCKY EFFIE
IMO 9288461
|
76,498 | 2005 |
4.0
|
B |
| 1344 |
RG LUNA
IMO 9592082
|
82,297 | 2013 |
4.0
|
B |
| 1343 |
SKIATHOS
IMO 9497402
|
79,412 | 2011 |
4.0
|
B |
| 1342 |
AKOUR II
IMO 9454084
|
58,831 | 2010 |
4.0
|
B |
| 1341 |
GW ALPHA
IMO 9738820
|
61,186 | 2015 |
4.0
|
B |
| 1340 |
LAGUNA SECA
IMO 9737606
|
81,966 | 2017 |
4.0
|
B |
| 1339 |
SHUN FU DA
IMO 9286580
|
82,849 | 2006 |
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.