Chemical tanker · Marshall Islands flag
CHIOS STAR: CO₂ emissions 2018–2025
IMO 9827566 EU ETS8 reporting years
- CO₂ reported 2025
- 4,995 t
- Fuel burned
- 1,596 t
- Distance
- 20,982 nm
- Time at sea
- 1,763 h
- Emitted at berth
- 7% of total
- Share of year under way
- 20%
CHIOS STAR against its type
It is one of 474 chemical tankers here under the Marshall Islands flag, 20.2% of the 2,344 on the register. The returns for 2018–2025 all give MAJURO as port of registry.
Its 4,995 t of CO₂ for 2025 is close to the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 238.1 kg CO₂, close to the type median of 250.2 kg. It logged 1,763 hours at sea against a median of 2,106 hours for its type that year. 6.7% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 8 years with reported emissions, the highest was 2019 (7,904 t) and the lowest 2022 (432 t). Its efficiency percentile within the type was 5 in both 2018 and 2025. Of the 4 comparable vessels listed below with a 2025 return, 3 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 | 4,995 | 1,596 | 20,982 | 1,763 | 332 | 238.1 | 7.2 | 5 |
| 2024 | 7,577 | 2,407 | 29,135 | 2,502 | 921 | 260.1 | 8.7 | 12 |
| 2023 | 6,375 | 2,022 | 23,927 | 1,919 | 1,105 | 266.4 | 7.7 | 5 |
| 2022 | 432 | 135 | — | 94 | 148 | 373.1 | — | — |
| 2021 | 5,353 | 1,694 | 21,048 | 1,723 | 781 | 254.3 | 8.9 | 8 |
| 2020 | 5,922 | 1,880 | 26,850 | 2,167 | 317 | 220.6 | 11.4 | 23 |
| 2019 | 7,904 | 2,522 | 35,638 | 3,189 | 547 | 221.8 | 7.0 | 2 |
| 2018 | 5,756 | 1,832 | 19,082 | 1,877 | 616 | 301.6 | 8.2 | 5 |
Vessel particulars
- IMO number
- 9827566
- Ship type
- Chemical tanker
- Flag state
- Marshall Islands per EU MRV 2025
- Port of registry
- MAJURO MRV 2025
- Technical efficiency (design)
- EEDI (4.07 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 67 of 1,348 qualifying chemical tankers by EEOI, at the 5th percentile. The dashed line is the type median, 14.4; this vessel reported 7.2.
EEOI divides emissions by transport work, which for this vessel and year was 695,657,382 tonne-miles over 20,982 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 13.2% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 34.1% while distance sailed fell 28.0%and CO₂ per nautical mile fell 8.5%.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
- 5,073 t
- Methane (CH₄)
- 0.08 t
- Nitrous oxide (N₂O)
- 0.29 t
- Under EU ETS
- 3,139 t, 63% 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.
This page draws on 8 MRV reporting years, an efficiency ranking and 1 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.