Oil tanker · Singapore flag · built 2010
SKS DOURO: CO₂ emissions 2018–2025
IMO 9428982 EU ETS7 reporting years
- CO₂ reported 2025
- 7,683 t
- Fuel burned
- 2,460 t
- Distance
- 18,556 nm
- Time at sea
- 1,447 h
- Emitted at berth
- 4% of total
- Share of year under way
- 17%
- Gross tonnage
- 56,500
SKS DOURO against its type
Built in 2010, it is the same age as the median oil tanker on this register (build year 2010, 2,896 vessels with a known build year). At 56,500 gross tonnage it is smaller than 55% of the other 2,841 oil tankers with a recorded tonnage. It is one of 237 oil tankers here under the Singapore flag, 6.7% of the 3,548 on the register. The same builder is recorded for 461 other vessels here, 179 of them oil tankers. Its MRV returns name it SKS DOURO for 2018–2023 and TORM GWENDOLYN for 2024–2025. The reported port of registry changed: Bergen (2020–2021), then Nassau (2023), then Singapore (2024–2025).
Its 7,683 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 414.1 kg CO₂, close to the type median of 403.2 kg. It logged 1,447 hours at sea against a median of 2,030 hours for its type that year. 4.0% 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 (13,338 t) and the lowest 2024 (2,117 t). Its efficiency percentile within the type went from 18 in 2018 to 31 in 2025 (lower is more efficient). The one sister ship listed below with a 2025 return reported a lower CO₂ per nautical mile.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 7,683 | 2,460 | 18,556 | 1,447 | 305 | 414.1 | 6.0 | 31 |
| 2024 | 2,117 | 675 | 4,442 | 385 | 173 | 476.6 | 5.3 | 22 |
| 2023 | 7,157 | 2,288 | 17,096 | 1,649 | 488 | 418.6 | 5.8 | 24 |
| 2021 | 5,848 | 1,869 | 16,354 | 1,508 | 211 | 357.6 | 5.6 | 20 |
| 2020 | 6,551 | 2,074 | 12,148 | 1,541 | 570 | 539.2 | 8.2 | 46 |
| 2019 | 4,056 | 1,293 | 7,509 | 651 | 74 | 540.2 | 5.9 | 22 |
| 2018 | 13,338 | 4,270 | 30,344 | 2,984 | 389 | 439.6 | 5.2 | 18 |
Vessel particulars
- IMO number
- 9428982
- Previously reported as
- TORM GWENDOLYN
- Ship type
- Oil tanker
- Gross tonnage
- 56,500
- Length overall
- 250.0 m
- Beam
- 45.0 m
- Year built
- 2010
- Flag state
- Singapore per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Norway. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- HD Hyundai Samho
- Port of registry
- Singapore MRV 2025
- Technical efficiency (design)
- EEXI (3.24 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-01-27
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 444 of 1,448 qualifying oil tankers by EEOI, at the 31st percentile. The dashed line is the type median, 7.5; this vessel reported 6.0.
EEOI divides emissions by transport work, which for this vessel and year was 1,278,444,260 tonne-miles over 18,556 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 42.4% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2022, so the series has gaps.
From 2024 to 2025, emissions rose 263.0% while distance sailed rose 317.7%and CO₂ per nautical mile fell 13.1%.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
- 7,804 t
- Methane (CH₄)
- 0.12 t
- Nitrous oxide (N₂O)
- 0.44 t
- Under EU ETS
- 3,994 t, 52% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | VERIFAVIA (UK) LTD | United Kingdom |
| 2020 | NORMEC VERIFAVIA SAS | France |
| 2021 | DNV | Germany |
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) and Wikimedia Commons.
This page draws on 7 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.