Chemical tanker · Marshall Islands flag · built 2018
OINOUSSIAN STAR: CO₂ emissions 2018–2025
IMO 9827578 EU ETS6 reporting years
- CO₂ reported 2025
- 1,224 t
- Fuel burned
- 388 t
- Distance
- 4,715 nm
- Time at sea
- 367 h
- Emitted at berth
- 8% of total
- Share of year under way
- 4%
- Gross tonnage
- 29,544
OINOUSSIAN STAR against its type
Built in 2018, it is 8 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 29,544 gross tonnage it is larger than 76% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 474 chemical tankers here under the Marshall Islands flag, 20.2% of the 2,344 on the register. The same builder is recorded for 983 other vessels here, 330 of them chemical tankers. The returns for 2018–2025 all give Majuro as port of registry.
Its 1,224 t of CO₂ for 2025 is 78% below the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 259.6 kg CO₂, close to the type median of 250.2 kg. It logged 367 hours at sea against a median of 2,106 hours for its type that year. 7.7% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 6 years with reported emissions, the highest was 2019 (8,946 t) and the lowest 2025 (1,224 t). Its efficiency percentile within the type went from 13 in 2018 to 15 in 2025 (lower is more efficient). Of the 6 sister ships 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 | 1,224 | 388 | 4,715 | 367 | 94 | 259.6 | 8.6 | 15 |
| 2022 | 5,533 | 1,762 | 24,517 | 2,028 | 476 | 225.7 | 8.4 | 7 |
| 2021 | 8,725 | 2,774 | 37,985 | 3,161 | 942 | 229.7 | 9.2 | 9 |
| 2020 | 1,959 | 626 | 6,614 | 542 | 211 | 296.2 | 8.8 | 8 |
| 2019 | 8,946 | 2,854 | 38,750 | 3,100 | 635 | 230.9 | 10.5 | 18 |
| 2018 | 3,437 | 1,100 | 11,297 | 1,002 | 307 | 304.2 | 9.8 | 13 |
Vessel particulars
- IMO number
- 9827578
- Ship type
- Chemical tanker
- Gross tonnage
- 29,544
- Length overall
- 183.1 m
- Year built
- 2018
- Flag state
- Marshall Islands per EU MRV 2025
- Builder
- HD Hyundai Mipo
- Port of registry
- Majuro MRV 2025
- Technical efficiency (design)
- EEDI (4.2 gCO₂/t·nm)
- Verifier
- HELLENIC LLOYD'S S.A., Greece
- Accreditation
- 1190
- Compliance document issued
- 2026-04-01
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 208 of 1,348 qualifying chemical tankers by EEOI, at the 15th percentile. The dashed line is the type median, 14.4; this vessel reported 8.6.
EEOI divides emissions by transport work, which for this vessel and year was 142,006,961 tonne-miles over 4,715 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 64.4% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2023, 2024, so the series has gaps.
From 2022 to 2025, emissions fell 77.9% while distance sailed fell 80.8%and CO₂ per nautical mile rose 15.0%.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
- 1,243 t
- Methane (CH₄)
- 0.02 t
- Nitrous oxide (N₂O)
- 0.07 t
- Under EU ETS
- 659 t, 54% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | 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 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 6 MRV reporting years, an efficiency ranking and 5 of 5 vessel particulars. Not found in the sources for this vessel: AIS movements in Norwegian waters, a name history, 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.