General Cargo 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
509 at D/E2,735 rated vessels · 275 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 | 1,462 | 5–10% | €400k–1,200k | — | vendor claim |
| Rotor sails (per unit) | 772 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 772 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 668 | 1–3% | €80k–250k | — | vendor claim |
| Bulbous bow reprofiling | 566 | 2–6% | €300k–900k | — | vendor claim |
| Shaft generator / PTO | 97 | 3–6% | €500–1,500/kW | — | 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 |
|---|---|---|---|
| KOKODA CHIEF · <25k | E | 15y | 2026 |
| CLAUDIO CUCCO · <25k | E | 40y | 2026 |
| GINO CUCCO · <25k | E | 39y | 2026 |
| GIUSEPPE CUCCO · <25k | E | 49y | 2026 |
| LADY OF CHICHESTER · <25k | E | 56y | 2026 |
| # | Vessel | Size (DWT) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 401 |
VICTORIA
IMO 9336828
|
50,223 | 2006 |
7.8
|
B |
| 402 |
AGIOS FANOURIOS
IMO 9465368
|
33,261 | 2009 |
7.8
|
B |
| 404 |
AMIRA LOULIA
IMO 9385087
|
32,271 | 2008 |
7.8
|
B |
| 403 |
GOLDEN SEA
IMO 9173355
|
15,962 | 1998 |
7.8
|
B |
| 405 |
ATLANTIC ORCHARD
IMO 9638159
|
34,317 | 2014 |
7.9
|
B |
| 406 |
IWAMI
IMO 9414981
|
20,142 | 2009 |
7.9
|
B |
| 407 |
MORNING
IMO 9263069
|
46,858 | 2004 |
7.9
|
B |
| 408 |
LADY MONICA
IMO 9392078
|
35,068 | 2009 |
7.9
|
B |
| 410 |
LUCKY TRADER
IMO 9427574
|
26,365 | 2011 |
7.9
|
B |
| 409 |
ATLANTIC VOYAGER II
IMO 9509671
|
33,299 | 2010 |
7.9
|
B |
| 411 |
ATLANTIC RUNNER II
IMO 9509619
|
33,150 | 2010 |
7.9
|
B |
| 412 |
SIMAS
IMO 9000314
|
17,012 | 1991 |
8.0
|
B |
| 413 |
CHIPOLBROK GALAXY
IMO 9432141
|
30,330 | 2010 |
8.0
|
B |
| 414 |
BEHCET C
IMO 9503744
|
22,650 | 2009 |
8.0
|
B |
| 416 |
AAL GEELONG
IMO 9393539
|
25,821 | 2009 |
8.1
|
B |
| 415 |
DA QING
IMO 9768540
|
28,605 | 2017 |
8.1
|
B |
| 417 |
LADY ESMA
IMO 9402110
|
31,612 | 2009 |
8.1
|
B |
| 418 |
AMIRA LAYLA
IMO 9412622
|
32,047 | 2009 |
8.1
|
B |
| 419 |
SUNDRY
IMO 9045651
|
7,321 | 2000 |
8.1
|
B |
| 421 |
MELOI
IMO 9392119
|
33,355 | 2009 |
8.1
|
B |
| 420 |
SARWELLE 1
IMO 9963073
|
12,753 | 2024 |
8.1
|
B |
| 422 |
BOCS BREMEN
IMO 9438389
|
34,065 | 2011 |
8.1
|
B |
| 423 |
THE WHALE ORCA
IMO 9509607
|
33,217 | 2009 |
8.2
|
B |
| 425 |
AAL DALIAN
IMO 9498470
|
32,190 | 2013 |
8.2
|
B |
| 424 |
SIMAG BEIJING
IMO 9638604
|
27,263 | 2012 |
8.2
|
B |
| 426 |
AAL GALVESTON
IMO 9393577
|
25,774 | 2010 |
8.2
|
B |
| 427 |
DSM CAPELLA
IMO 9271511
|
37,116 | 2004 |
8.2
|
B |
| 429 |
CASPIAN HARMONY
IMO 9766645
|
31,671 | 2016 |
8.2
|
B |
| 428 |
MANTA HATICE
IMO 9338565
|
31,931 | 2007 |
8.2
|
B |
| 430 |
BOLTEN PANORAMA
IMO 9495583
|
26,449 | 2012 |
8.3
|
B |
| 431 |
GEM STAR
IMO 9496173
|
33,171 | 2011 |
8.3
|
B |
| 432 |
MGD JOY
IMO 9427586
|
26,307 | 2011 |
8.3
|
B |
| 433 |
SEREN
IMO 9458391
|
28,085 | 2011 |
8.3
|
B |
| 434 |
BOLTEN SYMI
IMO 9427380
|
25,951 | 2009 |
8.4
|
B |
| 435 |
CHIPOLBROK SUN
IMO 9272230
|
30,435 | 2004 |
8.4
|
B |
| 436 |
JADE I
IMO 9162411
|
25,012 | 1998 |
8.4
|
B |
| 437 |
SIRUS SKY
IMO 9648738
|
7,807 | 2012 |
8.4
|
B |
| 438 |
EGBERT WAGENBORG
IMO 9802695
|
14,327 | 2017 |
8.4
|
B |
| 439 |
DEFENDER
IMO 9213210
|
10,610 | 1999 |
8.4
|
B |
| 440 |
SIDER ATLANTIC
IMO 9618795
|
25,469 | 2011 |
8.5
|
B |
| 441 |
SIDER LUCK
IMO 9495595
|
26,307 | 2012 |
8.5
|
B |
| 443 |
THURAYA - M
IMO 9240524
|
11,600 | 2001 |
8.5
|
B |
| 442 |
INDIGO LAKE
IMO 9722443
|
37,507 | 2015 |
8.5
|
B |
| 444 |
LADY ZEHMA
IMO 9303431
|
32,328 | 2005 |
8.5
|
B |
| 445 |
ASH BALTIC
IMO 9606493
|
13,121 | 2011 |
8.5
|
B |
| 447 |
ALGRACE
IMO 9154270
|
17,064 | 1999 |
8.6
|
B |
| 446 |
HALIT BEY
IMO 9511375
|
12,046 | 2008 |
8.6
|
B |
| 448 |
ADELHEID BR
IMO 9387621
|
10,860 | 2006 |
8.6
|
B |
| 449 |
BLUE BEAD
IMO 9171113
|
29,478 | 1998 |
8.6
|
B |
| 450 |
SIDER LION
IMO 9486269
|
25,467 | 2010 |
8.7
|
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 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.