Oil tanker · Marshall Islands flag
SEA QUEST: CO₂ emissions 2019–2025
IMO 9629940 EU ETS5 reporting years
- CO₂ reported 2024
- 2,057 t
- Fuel burned
- 660 t
- Time at sea
- 609 h
- Emitted at berth
- 8% of total
- Share of year under way
- 7%
SEA QUEST against its type
It is one of 793 oil tankers here under the Marshall Islands flag, 22.4% of the 3,548 on the register. Its MRV returns name it STI RUBY for 2019–2021 and SEA QUEST for 2024–2025. The returns for 2019–2025 all give Majuro as port of registry.
Its 2,057 t of CO₂ for 2024 is 75% below the median of 8,196 t among the 1,808 oil tankers on this register that reported for 2024. Per nautical mile it emitted 277.0 kg CO₂, 32% below the type median of 408.2 kg. It logged 609 hours at sea against a median of 2,020 hours for its type that year. 7.8% of its 2024 emissions were at berth; the median for oil tankers was 7.2%. Across 4 years with reported emissions, the highest was 2019 (7,935 t) and the lowest 2020 (1,766 t). Its efficiency percentile within the type went from 68 in 2019 to 46 in 2021 (lower is more efficient). Of the 3 comparable vessels listed below with a 2024 return, 0 reported a lower CO₂ per nautical mile than this vessel.
No EU/EEA voyages were reported for 2025: zero CO₂ and zero time at sea, left out of the trend and of any ranking.
Emissions by year2019–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | No EU/EEA voyages reported | |||||||
| 2024 | 2,057 | 660 | — | 609 | 161 | 277.0 | 13.9 | not ranked |
| 2021 | 3,029 | 970 | 11,426 | 980 | 77 | 265.1 | 8.1 | 46 |
| 2020 | 1,766 | 566 | 6,792 | 566 | 58 | 260.1 | 8.9 | 52 |
| 2019 | 7,935 | 2,532 | 31,329 | 2,662 | 631 | 253.3 | 10.6 | 68 |
Vessel particulars
- IMO number
- 9629940
- Previously reported as
- STI RUBY
- Ship type
- Oil tanker
- Flag state
- Marshall Islands per EU MRV 2025
- Port of registry
- Majuro MRV 2024
- Home port
- Majuro
- Technical efficiency (design)
- EEXI (4.88 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: transport work below the floor (2024)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2025-03-31
- Compliance document expires
- 2026-06-30
Reported CO₂ by year
Reported CO₂ in 2024 was 74.1% lower than in 2019, for EU/EEA voyages only. No return is recorded for 2022, 2023, so the series has gaps.
From 2021 to 2024, emissions fell 32.1% and CO₂ per nautical mile rose 4.5%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2024 emissions occurred
Methane, nitrous oxide and EU ETS2024
- Total CO₂ equivalent
- 2,090 t
- Methane (CH₄)
- 0.03 t
- Nitrous oxide (N₂O)
- 0.12 t
- Under EU ETS
- 1,109 t, 54% of total
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2019–2025, published by the European Commission.
This page draws on 5 MRV reporting years, 1 of 5 vessel particulars and a name history. Not found in the sources for this vessel: an efficiency ranking, 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.