Oil tanker · Malta flag
CHIOS I: CO₂ emissions 2018–2025
IMO 9792187 EU ETS8 reporting years
- CO₂ reported 2025
- 4,314 t
- Fuel burned
- 1,370 t
- Distance
- 6,202 nm
- Time at sea
- 972 h
- Emitted at berth
- 19% of total
- Share of year under way
- 11%
CHIOS I against its type
It is one of 289 oil tankers here under the Malta flag, 8.1% of the 3,548 on the register. The returns for 2018–2025 all give Valletta as port of registry.
Its 4,314 t of CO₂ for 2025 is 46% below the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 695.6 kg CO₂, 1.7 times the type median of 403.2 kg. It logged 972 hours at sea against a median of 2,030 hours for its type that year. 18.7% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 7 years with reported emissions, the highest was 2018 (13,782 t) and the lowest 2021 (3,623 t). Its efficiency percentile within the type went from 32 in 2018 to 36 in 2025 (lower is more efficient). Of the 7 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 | 4,314 | 1,370 | 6,202 | 972 | 806 | 695.6 | 6.4 | 36 |
| 2024 | No EU/EEA voyages reported | |||||||
| 2023 | 4,122 | 1,317 | 8,446 | 1,236 | 425 | 488.0 | 5.4 | 19 |
| 2022 | 5,409 | 1,725 | 11,791 | 1,224 | 421 | 458.8 | 4.1 | 5 |
| 2021 | 3,623 | 1,154 | 8,667 | 733 | 216 | 418.1 | 3.6 | 3 |
| 2020 | 4,070 | 1,301 | 7,072 | 714 | 468 | 575.6 | 6.2 | 22 |
| 2019 | 8,855 | 2,815 | 16,508 | 1,779 | 1,291 | 536.4 | 5.7 | 20 |
| 2018 | 13,782 | 4,414 | 26,816 | 2,382 | 734 | 514.0 | 6.8 | 32 |
Vessel particulars
- IMO number
- 9792187
- Ship type
- Oil tanker
- Flag state
- Malta per EU MRV 2025
- Port of registry
- VALLETTA MRV 2025
- Technical efficiency (design)
- EEDI (2.66 gCO₂/t·nm)
- Verifier
- EMICERT, Greece
- Accreditation
- 874-4
- Compliance document issued
- 2026-03-24
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 514 of 1,448 qualifying oil tankers by EEOI, at the 36th percentile. The dashed line is the type median, 7.5; this vessel reported 6.4.
EEOI divides emissions by transport work, which for this vessel and year was 670,911,353 tonne-miles over 6,202 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 68.7% lower than in 2018, for EU/EEA voyages only.
From 2023 to 2025, emissions rose 4.7% while distance sailed fell 26.6%and CO₂ per nautical mile rose 42.5%.That points mainly to how efficiently it sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 4,381 t
- Methane (CH₄)
- 0.07 t
- Nitrous oxide (N₂O)
- 0.25 t
- Under EU ETS
- 3,049 t, 71% of total
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.