General cargo ship · Liberia flag · built 1997
ADASTAR: CO₂ emissions 2018–2025
IMO 9151515 EU ETS7 reporting years
- CO₂ reported 2025
- 757 t
- Fuel burned
- 236 t
- Distance
- 2,912 nm
- Time at sea
- 657 h
- Emitted at berth
- 25% of total
- Share of year under way
- 7%
- Gross tonnage
- 15,868
ADASTAR against its type
Built in 1997, it is 10 years older than the median general cargo ship on this register, which was built in 2007 (2,852 vessels with a known build year). At 15,868 gross tonnage it is larger than 74% of the other 2,665 general cargo ships with a recorded tonnage. It is one of 216 general cargo ships here under the Liberia flag, 7.0% of the 3,081 on the register. The same builder is recorded for 133 other vessels here, one of them a general cargo ship. Its MRV returns name it ADASTAR for 2018–2021 and TOI CHALLENGER for 2023–2025. The returns for 2018–2025 all give Monrovia as port of registry.
Its 757 t of CO₂ for 2025 is 73% below the median of 2,820 t among the 2,469 general cargo ships on this register that reported for 2025. Per nautical mile it emitted 260.0 kg CO₂, 2.1 times the type median of 122.2 kg. It logged 657 hours at sea against a median of 3,044 hours for its type that year. 24.7% of its 2025 emissions were at berth; the median for general cargo ships was 4.3%. Across 7 years with reported emissions, the highest was 2018 (8,761 t) and the lowest 2025 (757 t). Its efficiency percentile within the type went from 31 in 2024 to 63 in 2025 (lower is more efficient). Of the 8 comparable vessels listed below with a 2025 return, 5 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 | 757 | 236 | 2,912 | 657 | 187 | 260.0 | 33.5 | 63 |
| 2024 | 4,188 | 1,335 | 20,535 | 3,354 | 362 | 203.9 | 17.8 | 31 |
| 2023 | 1,963 | 624 | — | 894 | 416 | 223.2 | — | — |
| 2021 | 4,298 | 1,359 | — | 2,348 | 166 | 183.2 | — | — |
| 2020 | 4,249 | 1,345 | — | 2,416 | 72 | 181.6 | — | — |
| 2019 | 7,299 | 2,333 | — | 5,508 | 124 | 172.8 | — | — |
| 2018 | 8,761 | 2,801 | — | 6,835 | 103 | 157.8 | — | — |
Vessel particulars
- IMO number
- 9151515
- Previously reported as
- TOI CHALLENGER
- Ship type
- General cargo ship
- Gross tonnage
- 15,868
- Length overall
- 164.0 m
- Year built
- 1997
- Flag state
- Liberia per EU MRV 2025
- Port of registry
- Monrovia MRV 2025
- Home port
- Monrovia
- Technical efficiency (design)
- EEXI (7.48 gCO₂/t·nm)
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2026-05-23
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 302 of 479 qualifying general cargo ships by EEOI, at the 63rd percentile. The dashed line is the type median, 29.4; this vessel reported 33.5.
EEOI divides emissions by transport work, which for this vessel and year was 22,627,316 tonne-miles over 2,912 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 91.4% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2022, so the series has gaps.
From 2024 to 2025, emissions fell 81.9% while distance sailed fell 85.8%and CO₂ per nautical mile rose 27.5%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 769 t
- Methane (CH₄)
- 0.01 t
- Nitrous oxide (N₂O)
- 0.04 t
- Under EU ETS
- 642 t, 85% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Bureau Veritas Certification France | France |
| 2023 | NORMEC VERIFAVIA SAS | France |
A change of verifier is not in itself a sign of anything being wrong.
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).
This page draws on 7 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars and a name history. Not found in the sources for this vessel: AIS movements in Norwegian waters, a licensed photograph, 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.