Oil tanker · Sweden flag · built 2012
STENA SURPRISE: CO₂ emissions 2018–2025
IMO 9533995 EU ETS7 reporting years
- CO₂ reported 2025
- 9,081 t
- Fuel burned
- 2,892 t
- Distance
- 18,515 nm
- Time at sea
- 1,778 h
- Emitted at berth
- 10% of total
- Share of year under way
- 20%
- Gross tonnage
- 81,299
STENA SURPRISE against its type
Built in 2012, it is 2 years newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 81,299 gross tonnage it is larger than 73% of the other 2,841 oil tankers with a recorded tonnage. It is one of 17 oil tankers here under the Sweden flag, 0.5% of the 3,548 on the register. The reported port of registry changed: Monrovia (2020–2023), then Gothenburg (2024–2025).
Its 9,081 t of CO₂ for 2025 is 15% above the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 490.4 kg CO₂, 22% above the type median of 403.2 kg. It logged 1,778 hours at sea against a median of 2,030 hours for its type that year. 10.3% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 7 years with reported emissions, the highest was 2023 (21,515 t) and the lowest 2018 (1,760 t). Its efficiency percentile within the type went from 6 in 2019 to 49 in 2025 (lower is more efficient). Of the 3 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 | 9,081 | 2,892 | 18,515 | 1,778 | 931 | 490.4 | 7.4 | 49 |
| 2024 | 7,053 | 2,258 | 15,235 | 1,280 | 451 | 462.9 | 6.0 | 30 |
| 2023 | 21,515 | 6,877 | 47,350 | 4,493 | 1,394 | 454.4 | 7.0 | 39 |
| 2021 | 15,149 | 4,833 | 25,802 | 2,326 | 1,307 | 587.1 | 7.8 | 44 |
| 2020 | 9,353 | 2,996 | 19,852 | 1,789 | 801 | 471.2 | 7.5 | 39 |
| 2019 | 7,626 | 2,436 | 14,952 | 2,021 | 694 | 510.0 | 3.9 | 6 |
| 2018 | 1,760 | 564 | — | 281 | 0 | 491.9 | — | — |
Vessel particulars
- IMO number
- 9533995
- Ship type
- Oil tanker
- Gross tonnage
- 81,299
- Length overall
- 275.0 m
- Beam
- 48.0 m
- Year built
- 2012
- Flag state
- Sweden per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Liberia. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- GOTHENBURG MRV 2025
- Technical efficiency (design)
- EEXI (2.83 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-02-18
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 710 of 1,448 qualifying oil tankers by EEOI, at the 49th percentile. The dashed line is the type median, 7.5; this vessel reported 7.4.
EEOI divides emissions by transport work, which for this vessel and year was 1,232,103,121 tonne-miles over 18,515 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 416.0% higher 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 28.8% while distance sailed rose 21.5%and CO₂ per nautical mile rose 5.9%.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
- 9,223 t
- Methane (CH₄)
- 0.14 t
- Nitrous oxide (N₂O)
- 0.52 t
- Under EU ETS
- 7,088 t, 78% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2020 | 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).
This page draws on 7 MRV reporting years, an efficiency ranking and 4 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.