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 · 273 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 |
|---|---|---|---|---|---|
| 201 |
POLSTEAM KOPROWO
IMO 9971862
|
37,591 | 2024 |
5.8
|
A |
| 203 |
BERGE SNAEFELL
IMO 9816593
|
37,739 | 2018 |
5.8
|
A |
| 202 |
COOL HERO
IMO 9609354
|
34,481 | 2015 |
5.8
|
A |
| 204 |
AMERICA PEARL
IMO 9659751
|
45,556 | 2014 |
5.8
|
A |
| 205 |
POPLAR ARROW
IMO 9235141
|
47,852 | 2005 |
5.8
|
A |
| 207 |
NORD BRAVE
IMO 9473690
|
33,745 | 2011 |
5.8
|
A |
| 206 |
TIAN SHOU
IMO 9704752
|
38,134 | 2016 |
5.8
|
A |
| 208 |
INDIANA
IMO 9186211
|
44,982 | 2000 |
5.8
|
A |
| 209 |
AMBER STAR.GR
IMO 9801160
|
37,692 | 2017 |
5.8
|
A |
| 210 |
BC LARA
IMO 9598024
|
38,494 | 2011 |
5.8
|
A |
| 211 |
ISABELA ISLAND
IMO 9791884
|
37,528 | 2017 |
5.8
|
A |
| 213 |
LUCKY FINDER
IMO 9393620
|
37,268 | 2009 |
5.9
|
A |
| 212 |
JAMNO
IMO 9767716
|
36,609 | 2018 |
5.9
|
A |
| 214 |
CANADA PEARL
IMO 9659749
|
45,566 | 2014 |
5.9
|
A |
| 215 |
NACC INDIAN
IMO 9116448
|
16,061 | 1996 |
5.9
|
A |
| 217 |
SAGA DISCOVERY
IMO 9317418
|
46,618 | 2006 |
5.9
|
A |
| 216 |
LA LOUISE
IMO 9470301
|
37,207 | 2012 |
5.9
|
A |
| 218 |
STAR HIDRA
IMO 9071569
|
46,547 | 1994 |
5.9
|
A |
| 219 |
SSI RELIANCE
IMO 9655224
|
36,058 | 2015 |
5.9
|
A |
| 220 |
TIAN JIAN
IMO 9722754
|
37,979 | 2016 |
5.9
|
A |
| 221 |
HOLLAND PEARL
IMO 9742455
|
45,224 | 2016 |
5.9
|
A |
| 223 |
FEDERAL MOSEL
IMO 9766188
|
36,575 | 2017 |
5.9
|
A |
| 222 |
TIBERIUS
IMO 9665841
|
33,383 | 2013 |
5.9
|
A |
| 224 |
WECO JOSEFINE
IMO 9779020
|
38,592 | 2018 |
5.9
|
A |
| 226 |
JACAMAR ARROW
IMO 9007532
|
46,998 | 1992 |
6.0
|
A |
| 225 |
STAR HERDLA
IMO 9071557
|
46,580 | 1994 |
6.0
|
A |
| 227 |
STAR ISFJORD
IMO 9182978
|
45,740 | 2000 |
6.0
|
A |
| 228 |
SAGA JOURNEY
IMO 9363637
|
46,500 | 2007 |
6.0
|
A |
| 229 |
SIROCO
IMO 9317705
|
37,534 | 2006 |
6.0
|
A |
| 230 |
IVS MERLIN
IMO 9604847
|
38,468 | 2011 |
6.0
|
A |
| 231 |
TIAN LE
IMO 9722730
|
37,994 | 2016 |
6.0
|
A |
| 232 |
REGIUS
IMO 9737113
|
33,395 | 2016 |
6.0
|
A |
| 236 |
AGIA CHARIS
IMO 9605097
|
38,055 | 2012 |
6.0
|
A |
| 235 |
RADIUS
IMO 9526710
|
36,976 | 2012 |
6.0
|
A |
| 234 |
FEDERAL ALSTER
IMO 9766164
|
36,583 | 2016 |
6.0
|
A |
| 233 |
FIORA TOPIC
IMO 9728461
|
34,356 | 2015 |
6.0
|
A |
| 238 |
BERGE ANNUPURI
IMO 9713193
|
34,536 | 2016 |
6.0
|
A |
| 237 |
NIOVI.GR
IMO 9827322
|
34,730 | 2019 |
6.0
|
A |
| 239 |
21 SUNNY
IMO 9615107
|
38,109 | 2012 |
6.0
|
B |
| 242 |
KERASIA S
IMO 9496185
|
33,170 | 2011 |
6.1
|
B |
| 241 |
ASPEN ARROW
IMO 9423566
|
53,022 | 2010 |
6.1
|
B |
| 240 |
BIRCH ARROW
IMO 9419242
|
52,998 | 2009 |
6.1
|
B |
| 243 |
SOUTH SPIRIT
IMO 9171125
|
29,482 | 1998 |
6.1
|
B |
| 244 |
OCEAN S
IMO 9086320
|
26,411 | 1996 |
6.1
|
B |
| 246 |
MSC CALEDONIA II
IMO 9262546
|
35,079 | 2002 |
6.1
|
B |
| 245 |
EDWINE OLDENDORFF
IMO 9717668
|
38,617 | 2013 |
6.1
|
B |
| 248 |
AMELIE
IMO 9647289
|
34,650 | 2013 |
6.1
|
B |
| 247 |
LJUTA
IMO 9672210
|
34,358 | 2014 |
6.1
|
B |
| 250 |
AGIA PARASKEVI
IMO 9604794
|
38,238 | 2011 |
6.1
|
B |
| 249 |
REYHAN SARI
IMO 9543342
|
37,968 | 2011 |
6.1
|
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.