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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)
#971 of 2,380 general cargos
CO₂ intensity
13.2 g CO₂/dwt·nm
vs segment average (13.91)
-5% greener
C
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
951 BBC SEBASTOPOL
IMO 9812004
 12,325 2022
13.0
B
952 BBC MINNESOTA
IMO 9260378
 12,840 2004
13.0
B
954 COE LUISA
IMO 9435026
 12,669 2008
13.0
C
953 BIRGIT
IMO 9433341
 7,560 2008
13.0
C
955 ARISTO
IMO 9229116
 9,682 2000
13.1
C
956 MARATONA
IMO 9081344
 4,200 1993
13.1
C
958 ESL AUSTRALIA
IMO 9365661
 17,356 2007
13.1
C
957 FWN SEA
IMO 9721657
 10,600 2016
13.1
C
959 MIRA AKAY
IMO 9045663
 6,916 2004
13.1
C
960 KEMET STAR
IMO 9154282
 17,033 1999
13.1
C
962 EKMEN
IMO 9136888
 6,830 1996
13.1
C
961 PASILA
IMO 9113018
 13,367 1995
13.1
C
963 SOUNDMAR
IMO 1031575
 5,993 2025
13.1
C
964 UNISOUL
IMO 9484209
 9,775 2009
13.1
C
965 MISSISSIPPIBORG
IMO 9207508
 9,732 2000
13.1
C
966 JSP HALMØ
IMO 9968231
 5,209 2024
13.1
C
967 CELINA
IMO 9368326
 17,299 2008
13.1
C
968 MONTSERRAT
IMO 9213739
 9,567 2000
13.1
C
969 GOLDEN ROSE
IMO 8801620
 9,919 1989
13.2
C
970 TARANTO
IMO 9133513
 3,406 1995
13.2
C
971 HABIBE ANA
IMO 9133355
 4,324 1995
13.2
C
972 LAURUS
IMO 9559169
 5,480 2009
13.2
C
974 EKMEN SKY
IMO 9384174
 8,523 2006
13.2
C
973 NUNALIK
IMO 9466996
 12,662 2009
13.2
C
976 SNOW CRYSTAL
IMO 9818319
 5,790 2017
13.2
C
975 MANISA AMELIA
IMO 9933456
 8,892 2023
13.2
C
978 STINNES MISTRAL
IMO 9452218
 12,946 2010
13.2
C
977 SCHELDEGRACHT
IMO 9202510
 21,446 2000
13.2
C
979 UAL HARRIER
IMO 9594303
 8,690 2012
13.2
C
980 KWINTEBANK
IMO 9234288
 9,857 2002
13.2
C
981 STADIONGRACHT
IMO 9202508
 21,449 2000
13.2
C
982 SITHONIA II
IMO 9455571
 8,790 2007
13.2
C
983 UNISKY
IMO 9356414
 9,775 2006
13.2
C
984 ARKLOW MOOR
IMO 9509475
 14,998 2011
13.3
C
985 VAERMLAND
IMO 9196254
 3,211 1999
13.3
C
986 BBC GANGES
IMO 9508304
 16,944 2010
13.3
C
987 SLUISGRACHT
IMO 9202522
 21,449 2001
13.3
C
988 BEATA
IMO 9053828
 6,918 1994
13.3
C
989 BALTIC SEA
IMO 9969479
 3,700 2024
13.3
C
990 SPUIGRACHT
IMO 9202534
 21,449 2001
13.3
C
992 GUNERLER
IMO 9598684
 6,599 2011
13.3
C
991 LADA 2005
IMO 8997144
 5,300 2005
13.3
C
993 SLOTERGRACHT
IMO 9197947
 21,402 2000
13.3
C
996 ALANIS
IMO 9468085
 12,744 2010
13.3
C
995 VISSERSBANK
IMO 1024663
 6,346 2025
13.3
C
994 HEEMSKERKGRACHT
IMO 9443669
 12,672 2009
13.3
C
998 BALTIC WAVE
IMO 9969508
 3,641 2025
13.3
C
997 FINN III
IMO 9534456
 10,049 2011
13.3
C
1000 RIX SAPPHIRE
IMO 9195729
 3,850 2000
13.4
C
999 UAL BRAZIL
IMO 9511636
 11,078 2010
13.4
C
Page 20 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.