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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 (13.95)
-57% 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

516 at D/E
A 1,027B 685C 507D 261E 255

2,735 rated vessels · 242 of the D/E set dock within 12 months

Docking pipeline — D/E vessels per quarter

43
Q3
45
Q4
41
'27 Q1
38
'27 Q2
35
'27 Q3
33
'27 Q4
29
'28 Q1
33
'28 Q2

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 1,466 5–10% €400k–1,200k — vendor claim
Rotor sails (per unit) 627 route-dependent €1,500k–3,500k — vendor claim
Suction wing sails (per unit) 627 route-dependent €1,000k–2,500k — vendor claim
Bulbous bow reprofiling 572 2–6% €300k–900k — vendor claim
Turbocharger cut-out 525 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

244
D/E vessels with at least one eligible measure
€95–286M
capex range, top measure per vessel (244 of 244 with computable scaling)
0.06–0.11 Mt
annual CO₂ reduction available (vendor-claimed ranges × reported emissions)

Retrofit prospects — worst band first

VesselBand 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
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
3.13
greenest (g CO₂/dwt·nm)
14.48
segment median
# Vessel Size (DWT) Built Carbon intensity — AER (g CO₂/dwt·nm) Grade
251 TEAL ARROW
IMO 9186780
 36,466 1999
5.8
A
250 STAR DALMATIA
IMO 9548835
 51,588 2011
5.8
A
254 FEDERAL ALSTER
IMO 9766164
 36,583 2016
5.8
A
253 BERGE SNOWDON
IMO 9738882
 37,790 2015
5.8
A
256 SAGA FRAM
IMO 9613874
 54,930 2013
5.8
A
255 21 SUNNY
IMO 9615107
 38,109 2012
5.8
A
257 DSM ANAS
IMO 9246308
 32,259 2002
5.8
A
258 ELM ARROW
IMO 9419254
 53,035 2010
5.9
A
259 BLUE BEAD
IMO 9171113
 29,478 1998
5.9
A
260 ERLYNE
IMO 9382736
 50,640 2010
5.9
A
261 DENIZ
IMO 9738727
 37,786 2015
5.9
A
262 MOUNTPARK
IMO 9773844
 37,839 2016
5.9
A
264 GARDNO
IMO 9767704
 36,643 2018
5.9
A
263 FIORA TOPIC
IMO 9728461
 34,356 2015
5.9
A
265 FLORA K
IMO 9708538
 35,236 2013
5.9
A
266 UNI HARMONY
IMO 9775165
 37,655 2016
5.9
A
267 POCHARD S
IMO 9363314
 32,285 2007
5.9
A
268 IRIDA GS
IMO 9614311
 32,836 2013
5.9
A
269 RIGHT COURSE
IMO 9473688
 33,735 2011
6.0
A
270 FEDERAL MOSEL
IMO 9766188
 36,575 2017
6.0
A
272 DEVBULK SALIHA
IMO 9449871
 30,124 2011
6.0
A
271 UBC STAVANGER
IMO 9287340
 31,751 2004
6.0
A
273 MANTA KEREM
IMO 9539535
 37,046 2015
6.0
A
274 NOVA
IMO 9414917
 50,806 2010
6.0
A
276 SAGA HORIZON
IMO 9121297
 47,016 1995
6.0
A
275 STAR ISFJORD
IMO 9182978
 45,740 2000
6.0
A
277 BIRCH ARROW
IMO 9419242
 52,998 2009
6.0
A
278 DEVBULK IMABARI
IMO 9550412
 29,451 2009
6.0
A
279 SAGA MORUS
IMO 9117741
 56,816 1997
6.0
A
281 OSHIMANA
IMO 9249295
 53,151 2003
6.0
A
280 BAM PROTEUS
IMO 9343625
 33,782 2007
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 EDWINE OLDENDORFF
IMO 9717668
 38,617 2012
6.1
A
286 IPSWICH BAY
IMO 9675729
 38,190 2014
6.1
A
287 EMMA OLDENDORFF
IMO 9676606
 38,300 2014
6.1
A
290 TIBERIUS
IMO 9665841
 33,383 2013
6.1
A
289 LARCH ARROW
IMO 9419230
 53,022 2009
6.1
A
288 NAVI STAR
IMO 9590979
 38,243 2011
6.1
A
291 LUCKY VOYAGER
IMO 9393632
 37,317 2009
6.1
A
293 STAR JUVENTAS
IMO 9254642
 44,837 2004
6.1
A
295 AMIRA LOULIA
IMO 9385087
 32,271 2008
6.1
A
294 VALENTINA 1
IMO 9336830
 50,199 2007
6.1
A
292 ECO CATHAR
IMO 9526162
 38,494 2012
6.1
A
297 UBC SANTA MARTA
IMO 9380805
 31,583 2008
6.1
A
296 SOUTH SPIRIT
IMO 9171125
 29,482 1998
6.1
A
300 LINDEN
IMO 9285354
 37,821 2004
6.2
A
299 ALBERTO TOPIC
IMO 9728473
 34,356 2015
6.2
A
298 BBC URANUS
IMO 9947768
 40,297 2022
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.