Vehicle carrier · Japan flag · built 2004
LIBERTY ACE: CO₂ emissions 2018–2025
IMO 9293650 EU ETS6 reporting years
- CO₂ reported 2025
- 1,381 t
- Fuel burned
- 432 t
- Time at sea
- 438 h
- Emitted at berth
- 5% of total
- Share of year under way
- 5%
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LIBERTY ACE against its type
Built in 2004, it is 4 years older than the median vehicle carrier on this register, which was built in 2008 (595 vessels with a known build year). It is one of 66 vehicle carriers here under the Japan flag, 9.3% of the 713 on the register. The same builder is recorded for 25 other vessels here, 3 of them vehicle carriers. The returns for 2018–2025 all give TOKYO as port of registry.
Its 1,381 t of CO₂ for 2025 is 80% below the median of 7,074 t among the 514 vehicle carriers on this register that reported for 2025. Per nautical mile it emitted 266.4 kg CO₂, 14% below the type median of 309.1 kg. It logged 438 hours at sea against a median of 1,639 hours for its type that year. 5.2% of its 2025 emissions were at berth; the median for vehicle carriers was 3.1%. Across 6 years with reported emissions, the highest was 2019 (6,826 t) and the lowest 2023 (96 t). Its efficiency percentile within the type went from 49 in 2018 to 70 in 2021 (lower is more efficient). Of the 8 comparable vessels listed below with a 2025 return, 0 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 1,381 | 432 | — | 438 | 72 | 266.4 | 149.1 | not ranked |
| 2023 | 96 | 30 | — | 37 | 14 | 282.6 | 564.7 | not ranked |
| 2022 | 177 | 57 | — | 36 | 3 | 333.6 | 53.7 | not ranked |
| 2021 | 2,554 | 808 | 11,295 | 812 | 38 | 226.1 | 71.0 | 70 |
| 2019 | 6,826 | 2,173 | 22,447 | 1,540 | 318 | 304.1 | 80.5 | 78 |
| 2018 | 4,967 | 1,588 | 17,434 | 1,283 | 173 | 284.9 | 61.1 | 49 |
Vessel particulars
- IMO number
- 9293650
- Ship type
- Vehicle carrier
- Length overall
- 200.0 m
- Year built
- 2004
- Flag state
- Japan per EU MRV 2025
- Builder
- Mitsubishi Heavy Industries
- Port of registry
- Tokyo MRV 2025
- Technical efficiency (design)
- EEXI (14.8 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: transport work below the floor (2025)
- Verifier
- Nippon Kaiji Kyokai, Japan
- Accreditation
- VS-21325-01
- Compliance document issued
- 2026-03-10
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 72.2% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2020, 2024, so the series has gaps.
From 2023 to 2025, emissions rose 1,341.9% and CO₂ per nautical mile fell 5.7%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 1,403 t
- Methane (CH₄)
- 0.02 t
- Nitrous oxide (N₂O)
- 0.08 t
- Under EU ETS
- 807 t, 58% of total
Laden voyages2025
- CO₂ on laden voyages
- 671 t, 49% of total
- Fuel, laden
- 209 t
The rest of the 2025 total was emitted on ballast legs or at berth.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 6 MRV reporting years, 4 of 5 vessel particulars and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, AIS movements in Norwegian waters, a name history, a sanctions listing and US port state inspections.
Empty means unreported, never zero. How EEOI, distance, percentiles and sister ships are handled is explained under reading a vessel page. Something wrong? See corrections.