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 2025. Lower is greener. Pick a segment and size class to see the greenest vessels first.
CII band distribution
516 at D/E2,735 rated vessels · 242 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 | 1,466 | 5–10% | €400k–1,200k | — | vendor claim |
| Rotor sails (per unit) | 631 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 631 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Bulbous bow reprofiling | 572 | 2–6% | €300k–900k | — | vendor claim |
| Turbocharger cut-out | 530 | 1–3% | €80k–250k | — | vendor claim |
| Shaft generator / PTO | 101 | 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 |
|---|---|---|---|
| PACIFIC INTEGRITY · <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 |
|---|---|---|---|---|---|
| 1351 |
ALEXANDER
IMO 9433353
|
7,400 | 2009 |
15.1
|
C |
| 1352 |
FAGELGRACHT
IMO 9428425
|
12,190 | 2011 |
15.2
|
C |
| 1353 |
KARITA
IMO 9436783
|
5,488 | 2013 |
15.2
|
C |
| 1354 |
FROLAND
IMO 9505584
|
9,692 | 2011 |
15.2
|
C |
| 1355 |
GROSSE FREIHEIT
IMO 9507142
|
5,465 | 2012 |
15.2
|
C |
| 1356 |
JUNO
IMO 9421154
|
8,265 | 2009 |
15.2
|
C |
| 1357 |
HAGLAND PIONEER
IMO 9936331
|
4,902 | 2022 |
15.2
|
C |
| 1358 |
RIX EMERALD
IMO 9116802
|
3,001 | 1995 |
15.2
|
C |
| 1359 |
WAALBORG
IMO 9505546
|
9,611 | 2010 |
15.2
|
C |
| 1360 |
TRADE NAVIGATOR
IMO 9631371
|
8,095 | 2013 |
15.2
|
C |
| 1361 |
GABRIELA H
IMO 9147863
|
6,790 | 1998 |
15.2
|
C |
| 1362 |
MARLON
IMO 9570644
|
7,880 | 2011 |
15.2
|
C |
| 1363 |
HAMMARLAND
IMO 9415052
|
9,198 | 2011 |
15.2
|
C |
| 1364 |
GELMOND 2
IMO 9403487
|
5,492 | 2008 |
15.2
|
C |
| 1365 |
LUCA
IMO 9286712
|
5,345 | 2004 |
15.2
|
C |
| 1366 |
FRI LAKE
IMO 9195664
|
3,653 | 1999 |
15.2
|
C |
| 1367 |
MARIT
IMO 9364148
|
8,390 | 2008 |
15.2
|
C |
| 1368 |
BEAUTRIDENT
IMO 9369306
|
7,223 | 2008 |
15.2
|
C |
| 1369 |
LADY DARYA
IMO 9188946
|
5,296 | 1999 |
15.2
|
C |
| 1370 |
MANISA CAMILLA
IMO 9362669
|
8,098 | 2006 |
15.2
|
C |
| 1371 |
MINERVAGRACHT
IMO 9571521
|
12,176 | 2011 |
15.2
|
C |
| 1372 |
WILSON DORDRECHT
IMO 9145140
|
3,010 | 1996 |
15.2
|
C |
| 1373 |
KRISTEL
IMO 9191747
|
5,049 | 1999 |
15.2
|
C |
| 1374 |
KAREWOOD STAR
IMO 9363986
|
6,315 | 2007 |
15.2
|
C |
| 1375 |
DROGDENBANK
IMO 9474163
|
6,665 | 2009 |
15.2
|
C |
| 1376 |
BBC MOONSTONE
IMO 9563732
|
14,338 | 2013 |
15.2
|
C |
| 1377 |
ONEGO TRADER
IMO 9238351
|
8,930 | 2001 |
15.2
|
C |
| 1378 |
ABANA
IMO 9158070
|
8,362 | 1998 |
15.2
|
C |
| 1379 |
SCOT EXPLORER
IMO 9841794
|
4,790 | 2019 |
15.2
|
C |
| 1380 |
UNISTREAM
IMO 9484235
|
8,500 | 2010 |
15.3
|
C |
| 1381 |
DAY DREAM
IMO 9214721
|
5,750 | 2001 |
15.3
|
C |
| 1382 |
JOHANNES
IMO 9815343
|
4,938 | 2018 |
15.3
|
C |
| 1383 |
DOMINICA
IMO 9232204
|
13,022 | 2001 |
15.3
|
C |
| 1384 |
SNOW
IMO 9100164
|
4,223 | 1994 |
15.3
|
C |
| 1385 |
SIDER BUFFALO
IMO 9861512
|
7,601 | 2020 |
15.3
|
C |
| 1386 |
TRENT NAVIGATOR
IMO 9631369
|
8,102 | 2013 |
15.3
|
C |
| 1387 |
ARGO
IMO 9421128
|
8,265 | 2009 |
15.3
|
C |
| 1388 |
CL NOGARO
IMO 9969493
|
3,614 | 2025 |
15.3
|
C |
| 1389 |
ESEN
IMO 9235488
|
8,959 | 2000 |
15.3
|
C |
| 1390 |
BBC RIO
IMO 9430222
|
18,010 | 2012 |
15.3
|
C |
| 1391 |
TREVILLE
IMO 9815331
|
4,938 | 2018 |
15.3
|
C |
| 1392 |
TEMA
IMO 9428786
|
8,270 | 2007 |
15.3
|
C |
| 1393 |
INDI
IMO 9370290
|
3,850 | 2009 |
15.3
|
C |
| 1394 |
KITTY C
IMO 9558048
|
6,798 | 2011 |
15.3
|
C |
| 1395 |
KLARIKA
IMO 9342164
|
5,936 | 2007 |
15.3
|
C |
| 1396 |
STELLAMAR
IMO 9951836
|
5,446 | 2024 |
15.3
|
C |
| 1397 |
RHODANUS
IMO 9173173
|
3,234 | 1998 |
15.3
|
C |
| 1398 |
LYSVIK SEAWAYS
IMO 9144251
|
7,500 | 1998 |
15.3
|
C |
| 1399 |
TANGO REY
IMO 9214185
|
8,600 | 2001 |
15.3
|
C |
| 1400 |
WILSON PORTO
IMO 9291717
|
4,933 | 2004 |
15.3
|
C |
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.