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 |
|---|---|---|---|---|---|
| 3201 |
GANT FLAIR
IMO 9554066
|
28,339 | 2010 |
7.2
|
E |
| 3202 |
NILOS
IMO 9311153
|
75,880 | 2006 |
7.2
|
E |
| 3203 |
MATIN BEY
IMO 9082623
|
26,477 | 1996 |
7.2
|
E |
| 3204 |
MOTTLER
IMO 9477828
|
30,807 | 2009 |
7.2
|
E |
| 3205 |
LAGAVULIN
IMO 9396555
|
16,925 | 2007 |
7.2
|
E |
| 3206 |
JAOHAR ADAM
IMO 9276743
|
29,721 | 2003 |
7.2
|
E |
| 3207 |
UBC THESSALONIKI
IMO 9718454
|
37,567 | 2015 |
7.2
|
E |
| 3208 |
BRANT
IMO 9393151
|
30,777 | 2008 |
7.2
|
E |
| 3209 |
AT 27
IMO 9136539
|
26,551 | 1997 |
7.2
|
E |
| 3210 |
SEAGLASS II
IMO 9498925
|
29,124 | 2008 |
7.2
|
E |
| 3211 |
GULNAK
IMO 9579028
|
35,166 | 2011 |
7.3
|
E |
| 3212 |
NORD VIND
IMO 9573921
|
28,225 | 2011 |
7.3
|
E |
| 3213 |
TINA S
IMO 9498432
|
34,690 | 2011 |
7.3
|
E |
| 3214 |
MARIA G
IMO 9358369
|
37,249 | 2007 |
7.3
|
E |
| 3215 |
ALYTUS
IMO 9544750
|
36,782 | 2011 |
7.3
|
E |
| 3216 |
RUDDY
IMO 9459981
|
30,930 | 2009 |
7.3
|
E |
| 3217 |
SEAHORSE
IMO 9594456
|
32,962 | 2012 |
7.3
|
E |
| 3218 |
ALANYA-M
IMO 9158159
|
41,327 | 2004 |
7.3
|
E |
| 3219 |
SANN TRO
IMO 9110315
|
27,327 | 1995 |
7.3
|
E |
| 3220 |
RAFINA
IMO 9159737
|
28,747 | 1997 |
7.3
|
E |
| 3221 |
AFRICAN MAGNOLIA
IMO 9666455
|
28,345 | 2016 |
7.3
|
E |
| 3222 |
ORIENT PRIDE
IMO 9450739
|
34,402 | 2007 |
7.3
|
E |
| 3223 |
AMIRA SOPHIE II
IMO 9672208
|
34,358 | 2014 |
7.3
|
E |
| 3224 |
MDS APHRODITE
IMO 9480708
|
36,454 | 2007 |
7.3
|
E |
| 3225 |
OBORISHTE
IMO 9415167
|
29,999 | 2010 |
7.3
|
E |
| 3226 |
MANDARIN
IMO 9239812
|
26,735 | 2003 |
7.3
|
E |
| 3227 |
AEOLOS
IMO 9228382
|
32,256 | 2001 |
7.3
|
E |
| 3228 |
KOCATEPE S
IMO 9470143
|
16,988 | 2008 |
7.3
|
E |
| 3229 |
LUDOGORETS
IMO 9415155
|
29,998 | 2010 |
7.4
|
E |
| 3230 |
ARGYROULA GS
IMO 9491587
|
33,178 | 2011 |
7.4
|
E |
| 3231 |
TRITON WIND I
IMO 9621003
|
37,113 | 2013 |
7.4
|
E |
| 3232 |
LENA
IMO 9757539
|
33,297 | 2016 |
7.4
|
E |
| 3233 |
AMIRA RAFIF
IMO 9300192
|
32,355 | 2004 |
7.4
|
E |
| 3234 |
NAVI VEGA
IMO 9481099
|
35,896 | 2011 |
7.4
|
E |
| 3235 |
ALICIA G
IMO 9459955
|
30,894 | 2011 |
7.4
|
E |
| 3236 |
COYOTE
IMO 9474216
|
35,010 | 2010 |
7.4
|
E |
| 3237 |
SUNLIGHT
IMO 9551351
|
28,346 | 2010 |
7.4
|
E |
| 3238 |
AB BONITA
IMO 9480564
|
33,810 | 2011 |
7.5
|
E |
| 3239 |
MKK II
IMO 9145229
|
21,470 | 1998 |
7.5
|
E |
| 3240 |
REK GRACE
IMO 9445203
|
28,342 | 2008 |
7.5
|
E |
| 3241 |
NAVI MOON
IMO 9385154
|
32,162 | 2008 |
7.5
|
E |
| 3242 |
CHARBEL 1
IMO 9598074
|
28,218 | 2011 |
7.5
|
E |
| 3243 |
M/V MARIGOLD
IMO 9668295
|
28,207 | 2013 |
7.5
|
E |
| 3244 |
SAFESEA SHAKTI
IMO 9460277
|
35,957 | 2010 |
7.5
|
E |
| 3245 |
CS CAPRICE
IMO 9406104
|
30,487 | 2010 |
7.5
|
E |
| 3246 |
AURORA VEGA
IMO 9450820
|
34,372 | 2011 |
7.5
|
E |
| 3247 |
SOLARIS
IMO 9474266
|
34,961 | 2011 |
7.5
|
E |
| 3248 |
QUEST
IMO 9530943
|
36,903 | 2011 |
7.5
|
E |
| 3249 |
CHRISTINA SELMER
IMO 9474278
|
34,983 | 2011 |
7.5
|
E |
| 3250 |
SCIO SPIRIT
IMO 9502738
|
35,253 | 2009 |
7.5
|
E |
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.