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 · 272 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) | 758 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 758 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Turbocharger cut-out | 656 | 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 |
|---|---|---|---|---|---|
| 1151 |
ALAND
IMO 9350783
|
7,056 | 2007 |
19.5
|
E |
| 1152 |
PRETTY NELLY
IMO 8872801
|
7,158 | 1994 |
19.5
|
E |
| 1153 |
BENIGANE
IMO 9455600
|
11,818 | 2008 |
19.5
|
E |
| 1154 |
ST. SOFIA
IMO 9419008
|
16,577 | 2011 |
19.6
|
E |
| 1155 |
LADY KHADIJA
IMO 8918734
|
7,177 | 1997 |
19.7
|
E |
| 1156 |
GREENPOLE
IMO 9570620
|
7,984 | 2010 |
19.7
|
E |
| 1157 |
GRINNA
IMO 9318955
|
7,136 | 2005 |
19.7
|
E |
| 1158 |
BBC VERMONT
IMO 9357236
|
12,863 | 2008 |
19.8
|
E |
| 1159 |
SIDER MONICA
IMO 9432517
|
8,520 | 2009 |
19.8
|
E |
| 1160 |
DORADO PLUS
IMO 9447782
|
6,933 | 2007 |
20.0
|
E |
| 1161 |
MANISA CAMILLA
IMO 9362669
|
8,098 | 2006 |
20.1
|
E |
| 1162 |
AMINAH STAR
IMO 8919879
|
7,912 | 1992 |
20.1
|
E |
| 1163 |
BALTIC WIND
IMO 9248552
|
16,558 | 2005 |
20.2
|
E |
| 1164 |
SEA SPRINTER
IMO 9364019
|
6,355 | 2007 |
20.2
|
E |
| 1165 |
LUCKY VOYAGER
IMO 9393632
|
37,317 | 2008 |
20.4
|
E |
| 1166 |
CENTURY MAS
IMO 9253260
|
8,077 | 2001 |
20.5
|
E |
| 1167 |
CS CIHAN
IMO 9045704
|
7,068 | 2007 |
20.6
|
E |
| 1168 |
SNAPPER
IMO 9381407
|
7,739 | 2008 |
20.7
|
E |
| 1169 |
ROZIE 7
IMO 8121020
|
7,752 | 1982 |
20.8
|
E |
| 1170 |
BBC KIMBERLEY
IMO 9407586
|
10,340 | 2009 |
20.9
|
E |
| 1171 |
ROTRA MARE
IMO 9365996
|
9,200 | 2009 |
21.8
|
E |
| 1172 |
SARDES
IMO 9374387
|
7,515 | 2006 |
21.9
|
E |
| 1173 |
ROTRA VENTE
IMO 9805568
|
8,817 | 2016 |
22.0
|
E |
| 1174 |
LOTUS
IMO 9193525
|
9,389 | 1999 |
22.0
|
E |
| 1175 |
BBC DIRECTION
IMO 9347853
|
7,973 | 2007 |
22.0
|
E |
| 1176 |
BBC EAGLE
IMO 9407574
|
10,340 | 2008 |
22.0
|
E |
| 1177 |
BBC ORION
IMO 9347841
|
7,947 | 2007 |
22.1
|
E |
| 1178 |
CARINA S
IMO 8908545
|
7,562 | 1990 |
22.6
|
E |
| 1179 |
PERA
IMO 9454216
|
6,199 | 2009 |
22.8
|
E |
| 1180 |
BBC DART
IMO 9360207
|
7,969 | 2008 |
23.0
|
E |
| 1181 |
DAGAT MAS
IMO 9213961
|
7,458 | 2000 |
23.0
|
E |
| 1182 |
MALIK ARCTICA
IMO 9618135
|
8,438 | 2017 |
23.4
|
E |
| 1183 |
DEFNE
IMO 9378230
|
6,042 | 2008 |
23.5
|
E |
| 1184 |
PANTHERA J
IMO 9226700
|
7,072 | 2001 |
23.7
|
E |
| 1185 |
CHL APOLLO
IMO 9318943
|
7,920 | 2004 |
24.3
|
E |
| 1186 |
BBC AFRICA
IMO 9362621
|
7,531 | 2006 |
24.4
|
E |
| 1187 |
JSP PORTO
IMO 9570644
|
7,880 | 2011 |
24.7
|
E |
| 1188 |
BBC DOLPHIN
IMO 9360192
|
7,996 | 2007 |
24.7
|
E |
| 1189 |
INDUSTRIAL CHALLENGER
IMO 9213935
|
7,428 | 2000 |
24.8
|
E |
| 1190 |
ASTRID L
IMO 9306835
|
13,879 | 2006 |
24.9
|
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.