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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.

Segment rank (2025)
#283 of 2,380 general cargos
CO₂ intensity
6.1 g CO₂/dwt·nm
vs segment average (13.91)
-56% greener
A
Bulk Carrier Container Ship Oil Tanker Chemical Tanker Gas Carrier LNG Carrier General Cargo Vehicle Carrier Refrigerated Cargo Ro-Ro Cargo

CII band distribution

509 at D/E
A 1,033B 687C 506D 258E 251

2,735 rated vessels · 274 of the D/E set dock within 12 months

Docking pipeline — D/E vessels per quarter

47
Q4
56
'27 Q1
56
'27 Q2
36
'27 Q3
37
'27 Q4
56
'28 Q1
44
'28 Q2
32
'28 Q3

Windows estimated from the class-expiry docking model, not bookings.

Top eligible retrofit measures for this segment

MeasureEligible CO₂ reductionCapex band PaybackConfidence
Propeller redesign / replacement 1,462 5–10% €400k–1,200k — vendor claim
Rotor sails (per unit) 763 route-dependent €1,500k–3,500k — vendor claim
Suction wing sails (per unit) 763 route-dependent €1,000k–2,500k — vendor claim
Turbocharger cut-out 659 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

246
D/E vessels with at least one eligible measure
€96–287M
capex range, top measure per vessel (246 of 246 with computable scaling)
0.06–0.12 Mt
annual CO₂ reduction available (vendor-claimed ranges × reported emissions)

Retrofit prospects — worst band first

VesselBand 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
See all 2,735 rated general cargos with exposure and dock windows. Sign in →
Sort 🌱 Greenest first 🔧 Least efficient first — retrofit candidates
Size (DWT)
All sizes < 25,000 DWT 25k – 60k DWT 60k – 100k DWT 100k – 200k DWT > 200,000 DWT
Year
2025 2024
2,429
vessels ranked
3.18
greenest (g CO₂/dwt·nm)
14.44
segment median
# Vessel Size (DWT) Built Carbon intensity — AER (g CO₂/dwt·nm) Grade
253 STAR DALMATIA
IMO 9548835
 51,588 2011
5.8
A
252 BRASSIANA
IMO 9613290
 57,536 2012
5.8
A
251 TEAL ARROW
IMO 9186780
 36,466 1999
5.8
A
255 FEDERAL ALSTER
IMO 9766164
 36,583 2016
5.8
A
254 BERGE SNOWDON
IMO 9738882
 37,790 2011
5.8
A
257 SAGA FRAM
IMO 9613874
 54,930 2013
5.8
A
256 21 SUNNY
IMO 9615107
 38,109 2012
5.8
A
258 DSM ANAS
IMO 9246308
 32,259 2002
5.8
A
260 LADY JAMILA
IMO 9316983
 33,427 2007
5.9
A
259 ELM ARROW
IMO 9419254
 53,035 2010
5.9
A
261 BLUE BEAD
IMO 9171113
 29,478 1998
5.9
A
262 ERLYNE
IMO 9382736
 50,640 2010
5.9
A
263 MOUNTPARK
IMO 9773844
 37,839 2016
5.9
A
264 DENIZ
IMO 9738727
 37,786 2015
5.9
A
266 FIORA TOPIC
IMO 9728461
 34,356 2015
5.9
A
265 GARDNO
IMO 9767704
 36,643 2018
5.9
A
267 FLORA K
IMO 9708538
 35,236 2013
5.9
A
268 UNI HARMONY
IMO 9775165
 37,655 2016
5.9
A
269 IRIDA GS
IMO 9614311
 32,836 2013
5.9
A
270 POCHARD S
IMO 9363314
 32,285 2007
5.9
A
271 FEDERAL MOSEL
IMO 9766188
 36,575 2017
6.0
A
272 RIGHT COURSE
IMO 9473688
 33,735 2011
6.0
A
274 MANTA KEREM
IMO 9539535
 37,046 2015
6.0
A
273 UBC STAVANGER
IMO 9287340
 31,751 2004
6.0
A
275 NOVA
IMO 9414917
 50,806 2010
6.0
A
276 STAR ISFJORD
IMO 9182978
 45,740 2000
6.0
A
278 SAGA HORIZON
IMO 9121297
 47,016 1995
6.0
A
277 BIRCH ARROW
IMO 9419242
 52,998 2009
6.0
A
279 DEVBULK IMABARI
IMO 9550412
 29,451 2009
6.0
A
280 SAGA MORUS
IMO 9117741
 56,816 1997
6.0
A
281 OSHIMANA
IMO 9249295
 53,151 2003
6.0
A
282 STAR LOUISIANA
IMO 9593880
 50,720 2013
6.0
A
284 MERLIN
IMO 9604847
 38,468 2011
6.1
A
283 CANELO ARROW
IMO 9107318
 48,077 1997
6.1
A
285 IPSWICH BAY
IMO 9675729
 38,190 2014
6.1
A
286 EMMA OLDENDORFF
IMO 9676606
 38,300 2014
6.1
A
287 EDWINE OLDENDORFF
IMO 9717668
 38,617 2013
6.1
A
290 LARCH ARROW
IMO 9419230
 53,022 2009
6.1
A
289 TIBERIUS
IMO 9665841
 33,383 2013
6.1
A
288 NAVI STAR
IMO 9590979
 38,243 2011
6.1
A
292 LUCKY VOYAGER
IMO 9393632
 37,317 2008
6.1
A
291 BAM PROTEUS
IMO 9343625
 33,471 2007
6.1
A
295 VALENTINA 1
IMO 9336830
 50,198 2007
6.1
A
296 STAR JUVENTAS
IMO 9254642
 44,837 2004
6.1
A
294 AMIRA LOULIA
IMO 9385087
 32,271 2008
6.1
A
293 ECO CATHAR
IMO 9526162
 38,494 2012
6.1
A
298 SOUTH SPIRIT
IMO 9171125
 29,482 1998
6.1
A
297 UBC SANTA MARTA
IMO 9380805
 31,583 2008
6.1
A
300 BBC URANUS
IMO 9947768
 40,297 2022
6.2
A
299 LINDEN
IMO 9285354
 37,821 2004
6.2
A
Page 6 of 48 — 2,380 vessels
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Engine intelligence

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.

Emission-friendly engine ranking

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.