Chemical tanker · Malta flag · built 2011
ASTERION: CO₂ emissions 2020–2025
IMO 9595125 EU ETS6 reporting years
- CO₂ reported 2025
- 9,378 t
- Fuel burned
- 2,985 t
- Distance
- 24,024 nm
- Time at sea
- 2,285 h
- Emitted at berth
- 19% of total
- Share of year under way
- 26%
- Gross tonnage
- 23,248
ASTERION against its type
Built in 2011, it is 1 year newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 23,248 gross tonnage it is larger than 51% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 218 chemical tankers here under the Malta flag, 9.3% of the 2,344 on the register. The same builder is recorded for 983 other vessels here, 330 of them chemical tankers. Its MRV returns name it ASTERION for 2020–2024 and HTM SAMURAI for 2025. The reported port of registry changed: marseille (2020–2024), then VALETTA (2025).
Its 9,378 t of CO₂ for 2025 is 1.7 times the median of 5,533 t among the 1,483 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 390.4 kg CO₂, 1.6 times the type median of 250.2 kg. It logged 2,285 hours at sea against a median of 2,109 hours for its type that year. 18.7% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 6 years with reported emissions, the highest was 2024 (12,715 t) and the lowest 2020 (1,922 t). Its efficiency percentile within the type went from 80 in 2020 to 75 in 2025 (lower is more efficient). Of the 5 sister ships listed below with a 2025 return, 5 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2020–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 9,378 | 2,985 | 24,024 | 2,285 | 1,749 | 390.4 | 23.0 | 75 |
| 2024 | 12,715 | 4,015 | 36,045 | 3,657 | 1,920 | 352.8 | 19.1 | 61 |
| 2023 | 11,247 | 3,556 | 33,878 | 3,781 | 1,336 | 332.0 | 18.0 | 58 |
| 2022 | 12,419 | 3,919 | 34,868 | 3,784 | 2,167 | 356.2 | 16.5 | 55 |
| 2021 | 10,737 | 3,388 | 36,933 | 3,790 | 1,007 | 290.7 | 16.3 | 51 |
| 2020 | 1,922 | 609 | 4,791 | 629 | 167 | 401.2 | 27.2 | 80 |
Vessel particulars
- IMO number
- 9595125
- Previously reported as
- HTM SAMURAI
- Ship type
- Chemical tanker
- Gross tonnage
- 23,248
- Length overall
- 184.0 m
- Year built
- 2011
- Flag state
- Malta per EU MRV 2025
- Builder
- HD Hyundai Mipo
- Port of registry
- VALETTA MRV 2025
- Technical efficiency (design)
- EEXI (5.68 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-02-06
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,009 of 1,348 qualifying chemical tankers by EEOI, at the 75th percentile. The dashed line is the type median, 14.4; this vessel reported 23.0.
EEOI divides emissions by transport work, which for this vessel and year was 407,569,752 tonne-miles over 24,024 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 387.9% higher than in 2020, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 26.2% while distance sailed fell 33.3%and CO₂ per nautical mile rose 10.7%.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
- 9,525 t
- Methane (CH₄)
- 0.15 t
- Nitrous oxide (N₂O)
- 0.54 t
- Under EU ETS
- 724 t, 8% of total
Laden voyages2025
- CO₂ on laden voyages
- 4,964 t, 53% of total
- Fuel, laden
- 1,580 t
- CO₂ per nm, laden
- 439.6 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2020 | Bureau Veritas Certification France | France |
| 2025 | DNV | Germany |
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 2020–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 6 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.