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.
CII band distribution
509 at D/E2,735 rated vessels · 271 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) | 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
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 |
|---|---|---|---|---|---|
| 1701 |
NM COPENHAGEN
IMO 9534274
|
6,050 | 2010 |
17.0
|
D |
| 1702 |
KRISTA
IMO 9434759
|
7,459 | 2008 |
17.0
|
D |
| 1703 |
ERLE
IMO 9506576
|
4,690 | 2011 |
17.0
|
D |
| 1704 |
DALARNA
IMO 9165085
|
4,400 | 1996 |
17.0
|
D |
| 1705 |
SEVEN AMARANTA
IMO 9306445
|
8,259 | 2007 |
17.0
|
D |
| 1706 |
ARKLOW VIEW
IMO 9772539
|
5,170 | 2016 |
17.0
|
D |
| 1707 |
SCOT CARRIER
IMO 9841782
|
4,789 | 2018 |
17.0
|
D |
| 1708 |
CLAIRE
IMO 9556301
|
4,450 | 2013 |
17.0
|
D |
| 1709 |
JSP VENTO
IMO 9570656
|
7,930 | 2011 |
17.0
|
D |
| 1710 |
EVANGELIA
IMO 9078531
|
2,610 | 1993 |
17.0
|
D |
| 1711 |
RIX AMBER
IMO 9171101
|
3,675 | 1998 |
17.0
|
D |
| 1712 |
INDUSTRIAL CONSTANT
IMO 9810343
|
8,400 | 2018 |
17.0
|
D |
| 1713 |
POOLGRACHT
IMO 9448360
|
19,381 | 2011 |
17.0
|
D |
| 1714 |
KATI
IMO 9173214
|
5,145 | 1998 |
17.0
|
D |
| 1715 |
KAMILLA
IMO 9427081
|
7,351 | 2007 |
17.1
|
D |
| 1716 |
BBC PEARL
IMO 9504786
|
14,418 | 2012 |
17.1
|
D |
| 1717 |
ARKLOW VALE
IMO 9772527
|
5,158 | 2015 |
17.1
|
D |
| 1718 |
FEED STAVANGER
IMO 9155951
|
4,666 | 1997 |
17.1
|
D |
| 1719 |
ARKLOW VALIANT
IMO 9772541
|
5,169 | 2016 |
17.1
|
D |
| 1720 |
KAILI
IMO 9114737
|
4,955 | 1996 |
17.1
|
D |
| 1721 |
DAIANA
IMO 9610509
|
8,546 | 2011 |
17.1
|
D |
| 1722 |
ADRIATIC
IMO 9944871
|
4,514 | 2022 |
17.1
|
D |
| 1723 |
KAROLI
IMO 9180841
|
5,727 | 1998 |
17.1
|
D |
| 1724 |
SUAT KARABEKIR
IMO 9391452
|
6,568 | 2008 |
17.1
|
D |
| 1725 |
BBC DAKOTA
IMO 9388900
|
12,685 | 2008 |
17.1
|
D |
| 1726 |
BBC LAGOS
IMO 9570668
|
7,960 | 2012 |
17.1
|
D |
| 1727 |
SULA
IMO 9006306
|
3,713 | 1993 |
17.1
|
D |
| 1728 |
GOTLAND
IMO 9411824
|
3,577 | 2012 |
17.1
|
D |
| 1729 |
LEONID LEONOV
IMO 9057276
|
2,800 | 1993 |
17.2
|
D |
| 1730 |
LADY EVA
IMO 9008110
|
6,559 | 1992 |
17.2
|
D |
| 1731 |
VALMIERA
IMO 8203660
|
7,782 | 1982 |
17.2
|
D |
| 1732 |
KAURI
IMO 9173226
|
5,145 | 1998 |
17.2
|
D |
| 1733 |
ROVA STONES
IMO 9387310
|
3,850 | 2008 |
17.2
|
D |
| 1734 |
OCEAN LEGEND
IMO 9083225
|
5,248 | 1992 |
17.2
|
D |
| 1735 |
AMADEUS SMARAGD
IMO 9267704
|
3,173 | 2003 |
17.2
|
D |
| 1736 |
WILSON HALSVIK
IMO 9017422
|
4,280 | 2001 |
17.2
|
D |
| 1737 |
MAIKE
IMO 8905115
|
2,339 | 1989 |
17.2
|
D |
| 1738 |
KAILEEN
IMO 9229049
|
6,358 | 2001 |
17.2
|
D |
| 1739 |
BBC LISBON
IMO 9513634
|
7,844 | 2011 |
17.2
|
D |
| 1740 |
ENDURANCE
IMO 9647318
|
7,825 | 2012 |
17.2
|
D |
| 1741 |
RIX SAIL
IMO 9114713
|
4,216 | 1995 |
17.2
|
D |
| 1742 |
AMADEUS GOLD
IMO 9479565
|
2,570 | 2010 |
17.2
|
D |
| 1743 |
EMS LAKE
IMO 9978913
|
4,400 | 2024 |
17.2
|
D |
| 1744 |
SEA EXPLORER
IMO 8603547
|
5,528 | 1986 |
17.2
|
D |
| 1745 |
WARNOWBORG
IMO 9505572
|
9,648 | 2011 |
17.3
|
D |
| 1746 |
ARKLOW VANGUARD
IMO 9772577
|
5,168 | 2017 |
17.3
|
D |
| 1747 |
ACEROMAR
IMO 9552082
|
5,235 | 2012 |
17.3
|
D |
| 1748 |
KAATA
IMO 9184823
|
5,049 | 1999 |
17.3
|
D |
| 1749 |
BALTIC TRANSPORT
IMO 9864760
|
3,812 | 2021 |
17.3
|
D |
| 1750 |
SCOT RANGER
IMO 9851220
|
4,782 | 2021 |
17.3
|
D |
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.
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.