Oil tanker · Marshall Islands flag
STI MEMPHIS: CO₂ emissions 2018–2025
IMO 9681156 EU ETS7 reporting years
- CO₂ reported 2025
- 7,623 t
- Fuel burned
- 2,437 t
- Distance
- 30,843 nm
- Time at sea
- 2,670 h
- Emitted at berth
- 9% of total
- Share of year under way
- 30%
STI MEMPHIS 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. The returns for 2018–2025 all give Majuro as port of registry.
Its 7,623 t of CO₂ for 2025 is close to the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 247.1 kg CO₂, 39% below the type median of 403.2 kg. It logged 2,670 hours at sea against a median of 2,030 hours for its type that year. 9.0% 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 (10,306 t) and the lowest 2020 (1,556 t). Its efficiency percentile within the type went from 76 in 2018 to 62 in 2025 (lower is more efficient). Of the 6 comparable vessels listed below with a 2025 return, 0 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 | 7,623 | 2,437 | 30,843 | 2,670 | 689 | 247.1 | 8.4 | 62 |
| 2024 | 10,089 | 3,221 | 33,558 | 3,079 | 788 | 300.7 | 13.4 | 85 |
| 2023 | 4,803 | 1,537 | 18,793 | 1,610 | 215 | 255.6 | 9.2 | 62 |
| 2022 | 1,609 | 515 | 6,532 | 706 | 25 | 246.3 | 7.5 | 44 |
| 2020 | 1,556 | 497 | — | 578 | 212 | 223.8 | 11.3 | not ranked |
| 2019 | 1,763 | 559 | 6,542 | 570 | 206 | 269.4 | 9.4 | 58 |
| 2018 | 10,306 | 3,293 | 34,469 | 3,631 | 1,102 | 299.0 | 12.9 | 76 |
Vessel particulars
- IMO number
- 9681156
- Ship type
- Oil tanker
- Flag state
- Marshall Islands per EU MRV 2025
- Port of registry
- Majuro MRV 2025
- Technical efficiency (design)
- EEXI (4.22 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-02
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 901 of 1,448 qualifying oil tankers by EEOI, at the 62nd percentile. The dashed line is the type median, 7.5; this vessel reported 8.4.
EEOI divides emissions by transport work, which for this vessel and year was 902,075,740 tonne-miles over 30,843 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 26.0% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2021, so the series has gaps.
From 2024 to 2025, emissions fell 24.5% while distance sailed fell 8.1%and CO₂ per nautical mile fell 17.8%.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
- 7,742 t
- Methane (CH₄)
- 0.12 t
- Nitrous oxide (N₂O)
- 0.44 t
- Under EU ETS
- 4,945 t, 65% 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 7 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.