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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)
#217 of 2,380 general cargos
CO₂ intensity
5.6 g CO₂/dwt·nm
vs segment average (13.91)
-60% 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 1,034B 685C 507D 258E 251

2,735 rated vessels · 271 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) 756 route-dependent €1,500k–3,500k — vendor claim
Suction wing sails (per unit) 756 route-dependent €1,000k–2,500k — vendor claim
Turbocharger cut-out 652 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
201 STAR MINERVA
IMO 9355513
 50,757 2008
5.5
A
203 BC PISTI
IMO 9851359
 39,287 2019
5.5
A
202 NIOVI.GR
IMO 9827322
 34,730 2019
5.5
A
204 NARIE
IMO 9767728
 36,648 2018
5.5
A
205 BERGE DAISETSU
IMO 9713179
 34,533 2015
5.5
A
206 ASTRO PROPUS
IMO 9691498
 38,271 2014
5.5
A
207 PROPEL PROSPERITY
IMO 9317690
 37,504 2006
5.5
A
209 RIZABEY
IMO 9197117
 24,999 1999
5.5
A
208 SAGA TUCANO
IMO 9160803
 47,032 1998
5.5
A
210 POPLAR ARROW
IMO 9235141
 47,852 2005
5.5
A
211 SPANACO STAR
IMO 9071557
 46,580 1994
5.5
A
212 DEVBULK SALIHA
IMO 9449871
 32,309 2011
5.5
A
213 ASTERIUS
IMO 9810769
 33,358 2018
5.5
A
214 OCEAN S
IMO 9086320
 26,411 1996
5.6
A
215 SIBAL
IMO 9712620
 33,364 2015
5.6
A
216 CETUS TIGER
IMO 9606003
 37,059 2013
5.6
A
218 WECO LAURA
IMO 9877327
 38,575 2020
5.6
A
217 HALOPHYLA
IMO 9613329
 57,440 2013
5.6
A
219 MOUNT HIKURANGI
IMO 9580039
 31,646 2013
5.6
A
220 ASTRO POLARIS
IMO 9623051
 37,054 2014
5.6
A
222 ESRA C
IMO 9379662
 33,257 2008
5.6
A
221 ELECTRA.GR
IMO 9834844
 37,323 2019
5.6
A
223 SAGA NAVIGATOR
IMO 9371062
 46,652 2007
5.6
A
224 YUAN FU
IMO 9998030
 61,646 2024
5.6
A
226 ARACARI ARROW
IMO 9008706
 46,956 1992
5.6
A
225 LADY ANDRIANE
IMO 9832509
 34,845 2020
5.6
A
227 SAGA PIONEER
IMO 9380764
 46,559 2008
5.7
A
228 ARBORELLA
IMO 9613288
 57,540 2012
5.7
A
229 REGIUS
IMO 9737113
 33,395 2016
5.7
A
230 LADY MONICA
IMO 9392078
 35,068 2009
5.7
A
231 MANTA OMER MECIT
IMO 9737058
 38,167 2015
5.7
A
232 AVRA.GR
IMO 9755866
 34,930 2016
5.7
A
233 NAGUAL
IMO 9380829
 37,277 2005
5.7
A
234 MANTA NILGUN
IMO 9553024
 33,671 2011
5.7
A
236 CENTURIUS
IMO 9712618
 33,367 2015
5.7
A
235 LJUTA
IMO 9672210
 34,358 2014
5.7
A
237 MANTA FATMA
IMO 9604809
 38,243 2012
5.7
A
238 PARLA
IMO 9537977
 35,732 2011
5.8
A
239 OCEAN ARSENAL
IMO 9635248
 33,328 2013
5.8
A
240 IRMA S
IMO 9385063
 32,295 2008
5.8
A
241 ARIA
IMO 9473597
 32,216 2009
5.8
A
242 HYDRA DAWN
IMO 9607447
 35,390 2013
5.8
A
244 IVS KESTREL
IMO 9700926
 32,768 2014
5.8
A
243 STAR LINDESNES
IMO 9593878
 50,748 2013
5.8
A
247 PROPEL PASSION
IMO 9473676
 33,686 2011
5.8
A
246 HOLLAND PEARL
IMO 9742455
 45,224 2016
5.8
A
245 FALCON S
IMO 9329423
 37,406 2007
5.8
A
248 DELICATA
IMO 9613317
 57,441 2013
5.8
A
250 CHARISMA.GR
IMO 9834856
 37,295 2019
5.8
A
249 OSAKANA
IMO 9253870
 57,624 2004
5.8
A
Page 5 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.