Chemical tanker · Liberia flag · built 2008
HORIZON ATHENA: CO₂ emissions 2019–2025
IMO 9407378 EU ETS7 reporting years
- CO₂ reported 2025
- 6,016 t
- Fuel burned
- 1,905 t
- Distance
- 16,470 nm
- Time at sea
- 1,631 h
- Emitted at berth
- 10% of total
- Share of year under way
- 19%
- Gross tonnage
- 29,828
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HORIZON ATHENA against its type
Built in 2008, it is 2 years older than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 29,828 gross tonnage it is larger than 85% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 402 chemical tankers here under the Liberia flag, 17.2% of the 2,344 on the register. The same builder is recorded for 180 other vessels here, 53 of them chemical tankers. Its MRV returns name it HORIZON ATHENA for 2019–2024 and STELLA MARIA for 2025. The returns for 2019–2025 all give Monrovia as port of registry.
Its 6,016 t of CO₂ for 2025 is close to the median of 5,533 t among the 1,483 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 365.3 kg CO₂, 46% above the type median of 250.2 kg. It logged 1,631 hours at sea against a median of 2,109 hours for its type that year. 10.4% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 7 years with reported emissions, the highest was 2021 (17,823 t) and the lowest 2024 (1,901 t). Its efficiency percentile within the type went from 14 in 2019 to 41 in 2025 (lower is more efficient). The one sister ship listed below with a 2025 return reported a higher or equal CO₂ per nautical mile.
Emissions by year2019–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 6,016 | 1,905 | 16,470 | 1,631 | 628 | 365.3 | 12.8 | 41 |
| 2024 | 1,901 | 606 | 5,714 | 449 | 110 | 332.7 | 8.9 | 14 |
| 2023 | 4,360 | 1,390 | 13,798 | 1,103 | 587 | 316.0 | 20.8 | 66 |
| 2022 | 4,617 | 1,467 | 14,279 | 1,274 | 283 | 323.3 | 12.9 | 35 |
| 2021 | 17,823 | 5,687 | 47,607 | 4,707 | 755 | 374.4 | 15.2 | 45 |
| 2020 | 11,022 | 3,481 | 29,044 | 3,496 | 1,135 | 379.5 | 13.9 | 38 |
| 2019 | 7,345 | 2,338 | 22,464 | 2,280 | 873 | 327.0 | 10.0 | 14 |
Vessel particulars
- IMO number
- 9407378
- Previously reported as
- STELLA MARIA
- Ship type
- Chemical tanker
- Gross tonnage
- 29,828
- Length overall
- 183.0 m
- Beam
- 32.2 m
- Year built
- 2008
- Flag state
- Liberia per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Venezuela. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- SPP Shipbuilding Co., Ltd.
- Port of registry
- Monrovia MRV 2025
- Technical efficiency (design)
- EEXI (4.95 gCO₂/t·nm)
- Verifier
- HELLENIC LLOYD'S S.A., Greece
- Accreditation
- 1190
- Compliance document issued
- 2026-03-28
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 553 of 1,348 qualifying chemical tankers by EEOI, at the 41st percentile. The dashed line is the type median, 14.4; this vessel reported 12.8.
EEOI divides emissions by transport work, which for this vessel and year was 469,290,172 tonne-miles over 16,470 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 18.1% lower than in 2019, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 216.4% while distance sailed rose 188.3%and CO₂ per nautical mile rose 9.8%.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
- 6,110 t
- Methane (CH₄)
- 0.10 t
- Nitrous oxide (N₂O)
- 0.34 t
- Under EU ETS
- 4,077 t, 68% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2019 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2020 | HELLENIC LLOYD'S S.A. | Greece |
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 2019–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 7 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.