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 2024. 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 · 627 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 | 3,691 | 1–3% | €80k–250k | — | vendor claim |
| Rotor sails (per unit) | 3,478 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 3,478 | 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 |
PIGMI
IMO 9470571
|
33,918 | 2011 |
7.2
|
E |
| 3202 |
SOUTHERN CROSS
IMO 9606027
|
37,085 | 2014 |
7.2
|
E |
| 3203 |
NJ EARTH
IMO 9229996
|
37,180 | 2003 |
7.2
|
E |
| 3204 |
THEA G
IMO 9415246
|
30,790 | 2009 |
7.2
|
E |
| 3205 |
EVER GALLANT
IMO 9624328
|
28,206 | 2012 |
7.2
|
E |
| 3206 |
ELIKI
IMO 9470325
|
28,228 | 2011 |
7.2
|
E |
| 3207 |
MY LAMA
IMO 9339791
|
28,409 | 2005 |
7.2
|
E |
| 3208 |
WADI ALARAB
IMO 9107681
|
64,214 | 1995 |
7.2
|
E |
| 3209 |
SEAGULL
IMO 9452505
|
58,609 | 2010 |
7.2
|
E |
| 3210 |
AFRICAN MAGNOLIA
IMO 9666455
|
28,345 | 2016 |
7.2
|
E |
| 3211 |
MESHKA
IMO 9588380
|
35,829 | 2011 |
7.2
|
E |
| 3212 |
LORD HAMMOUR
IMO 9218088
|
28,471 | 2001 |
7.2
|
E |
| 3213 |
CALOBRA
IMO 9739082
|
35,422 | 2015 |
7.2
|
E |
| 3214 |
NANI K
IMO 9694995
|
37,423 | 2014 |
7.2
|
E |
| 3215 |
TAZ
IMO 9703825
|
35,016 | 2015 |
7.2
|
E |
| 3216 |
FETHIYE-M
IMO 9485899
|
37,995 | 2011 |
7.2
|
E |
| 3217 |
KESTREL S
IMO 9489211
|
33,108 | 2010 |
7.2
|
E |
| 3218 |
PENELOPE L
IMO 9714343
|
28,145 | 2015 |
7.2
|
E |
| 3219 |
BELLA NADIA
IMO 9118252
|
16,860 | 1997 |
7.2
|
E |
| 3220 |
AMANO-T
IMO 9117832
|
27,359 | 1996 |
7.3
|
E |
| 3221 |
GREENTEC
IMO 9493509
|
33,035 | 2008 |
7.3
|
E |
| 3222 |
BOS COSTA
IMO 9310616
|
28,709 | 2007 |
7.3
|
E |
| 3223 |
HANDY PERTH
IMO 9628128
|
35,177 | 2013 |
7.3
|
E |
| 3224 |
ORAWA
IMO 9386926
|
38,956 | 2009 |
7.3
|
E |
| 3225 |
NEW LEADER
IMO 9471795
|
36,830 | 2011 |
7.3
|
E |
| 3226 |
MAJESTIC NOOR
IMO 9138642
|
27,827 | 1997 |
7.3
|
E |
| 3227 |
MOTHER M
IMO 9626613
|
35,856 | 2012 |
7.3
|
E |
| 3228 |
ADAM-A
IMO 9114543
|
28,458 | 1995 |
7.3
|
E |
| 3229 |
TRUE MARINER
IMO 9599822
|
38,239 | 2011 |
7.3
|
E |
| 3230 |
COYOTE
IMO 9474216
|
35,010 | 2010 |
7.3
|
E |
| 3231 |
THEBE
IMO 9697973
|
35,987 | 2014 |
7.3
|
E |
| 3232 |
SAINT DIMITRIOS
IMO 9486398
|
33,788 | 2007 |
7.3
|
E |
| 3233 |
MARINOR
IMO 9433559
|
56,784 | 2009 |
7.3
|
E |
| 3234 |
T SYMPHONY
IMO 9611498
|
32,371 | 2011 |
7.3
|
E |
| 3235 |
WL ATLANTIC
IMO 9489417
|
37,488 | 2010 |
7.3
|
E |
| 3236 |
FRIENDLY ISLANDS
IMO 9615042
|
28,387 | 2006 |
7.3
|
E |
| 3237 |
VALSAMITIS
IMO 9629823
|
34,827 | 2012 |
7.3
|
E |
| 3238 |
BOSPHORUS-M
IMO 9359818
|
55,903 | 2006 |
7.3
|
E |
| 3239 |
YEOMAN BANK
IMO 7422881
|
38,997 | 1982 |
7.3
|
E |
| 3240 |
WL UGLICH
IMO 9674373
|
37,666 | 2014 |
7.3
|
E |
| 3241 |
POLARIS Z
IMO 9109512
|
18,233 | 1995 |
7.3
|
E |
| 3242 |
IOANNA D
IMO 9634969
|
34,816 | 2012 |
7.3
|
E |
| 3243 |
NJ CALLISTO
IMO 9497452
|
31,796 | 2012 |
7.3
|
E |
| 3244 |
ALONISSOS
IMO 9566916
|
57,155 | 2010 |
7.3
|
E |
| 3245 |
T PRIME
IMO 9611503
|
32,451 | 2011 |
7.3
|
E |
| 3246 |
MILOS
IMO 9138446
|
24,045 | 1997 |
7.3
|
E |
| 3247 |
VALERIO
IMO 9244037
|
27,112 | 2003 |
7.3
|
E |
| 3248 |
DSM CASTOR
IMO 9230000
|
35,000 | 2003 |
7.3
|
E |
| 3249 |
ATROMITOS L
IMO 9605073
|
28,227 | 2012 |
7.3
|
E |
| 3250 |
KOCIEWIE
IMO 9423798
|
38,981 | 2009 |
7.3
|
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 2024 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.