Oil tanker · Norway flag · built 2004
SIRI KNUTSEN: CO₂ emissions 2018–2025
IMO 9247168 MMSI 257562000EU ETS8 reporting years
- CO₂ reported 2025
- 10,076 t
- Fuel burned
- 3,143 t
- Time at sea
- 2,425 h
- Emitted at berth
- 10% of total
- Share of year under way
- 28%
- Gross tonnage
- 24,242
SIRI KNUTSEN against its type
Built in 2004, it is 6 years older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 24,242 gross tonnage it is smaller than 88% of the other 2,841 oil tankers with a recorded tonnage. It is one of 58 oil tankers here under the Norway flag, 1.6% of the 3,548 on the register. The same builder is recorded for 9 other vessels here, 3 of them oil tankers. The returns for 2019–2025 all give Haugesund as port of registry.
Its 10,076 t of CO₂ for 2025 is 27% 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 783.4 kg CO₂, 1.9 times the type median of 403.2 kg. It logged 2,425 hours at sea against a median of 2,030 hours for its type that year. 9.8% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 8 years with reported emissions, the highest was 2021 (15,621 t) and the lowest 2025 (10,076 t). Its efficiency percentile within the type was 100 in both 2018 and 2024. 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 | 10,076 | 3,143 | — | 2,425 | 984 | 783.4 | 77.6 | not ranked |
| 2024 | 12,993 | 4,053 | 19,902 | 3,799 | 1,247 | 652.8 | 59.3 | 100 |
| 2023 | 15,308 | 4,775 | 27,395 | 3,149 | 1,345 | 558.8 | 43.9 | 99 |
| 2022 | 14,892 | 4,645 | 22,026 | 3,065 | 1,143 | 676.1 | 65.0 | 100 |
| 2021 | 15,621 | 4,872 | 24,025 | 3,499 | 998 | 650.2 | 62.0 | 100 |
| 2020 | 15,452 | 4,820 | 29,171 | 3,949 | 994 | 529.7 | 44.7 | 99 |
| 2019 | 14,324 | 4,468 | 25,093 | 7,151 | 2,709 | 570.8 | 53.9 | 100 |
| 2018 | 15,202 | 4,742 | 22,547 | 6,858 | 3,296 | 674.2 | 58.1 | 100 |
Vessel particulars
- IMO number
- 9247168
- MMSI
- 257562000
- Call sign
- LAKD8
- Ship type
- Oil tanker
- Gross tonnage
- 24,242
- Length overall
- 186.9 m
- Beam
- 27.0 m
- Year built
- 2004
- Flag state
- Norway per EU MRV 2025
- Builder
- Naval Gijón
- Port of registry
- HAUGESUND MRV 2025
- Technical efficiency (design)
- EEXI (5.71 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: transport work below the floor (2025)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-20
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 33.7% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 22.5% and CO₂ per nautical mile rose 20.0%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 10,230 t
- Methane (CH₄)
- 0.16 t
- Nitrous oxide (N₂O)
- 0.57 t
- Under EU ETS
- 6,779 t, 67% of total
Observed movementsAIS · Norwegian waters
- First seen
- 28 Jul 2025
- Last seen
- 23 Jul 2026
- Days observed
- 25
- Positions
- 1,430
- Median speed
- 9.0 kn
Its recorded positions span 58.0°N to 60.9°N and 4.4°E to 6.2°E.
400 hourly points from 1,430 positions. Filled circle first, open circle last; squares are ports for orientation, not calls.
Positions recorded per month
Norwegian Coastal Administration open AIS, Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap means the vessel was not recorded here, not that it was idle or that a transponder was off.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2020 | HELLENIC LLOYD'S S.A. | Greece |
| 2025 | 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).
- Movements: Norwegian Coastal Administration open AIS extract.
This page draws on 8 MRV reporting years, 5 of 5 vessel particulars and AIS movements in Norwegian waters. Not found in the sources for this vessel: an efficiency ranking, 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.