Oil tanker · Liberia flag · built 2019
ASPEN: CO₂ emissions 2019–2025
IMO 9818058 MMSI 636023947EU ETS7 reporting years
- CO₂ reported 2025
- 28,828 t
- Fuel burned
- 9,224 t
- Distance
- 61,798 nm
- Time at sea
- 6,091 h
- Emitted at berth
- 14% of total
- Share of year under way
- 70%
- Gross tonnage
- 61,468
ASPEN against its type
Built in 2019, it is 9 years newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 61,468 gross tonnage it is larger than 56% of the other 2,841 oil tankers with a recorded tonnage. It is one of 718 oil tankers here under the Liberia flag, 20.2% of the 3,548 on the register. The same builder is recorded for 563 other vessels here, 217 of them oil tankers. Its MRV returns name it EIKEVIKEN for 2019–2023 and ASPEN for 2024–2025. The reported port of registry changed: Bergen (2019–2023), then Monrovia (2024–2025).
Its 28,828 t of CO₂ for 2025 is 3.6 times the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 466.5 kg CO₂, 16% above the type median of 403.2 kg. It logged 6,091 hours at sea against a median of 2,030 hours for its type that year. 13.7% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 7 years with reported emissions, the highest was 2025 (28,828 t) and the lowest 2019 (15,172 t). Its efficiency percentile within the type went from 29 in 2019 to 63 in 2025 (lower is more efficient). Of the 7 sister ships listed below with a 2025 return, 6 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2019–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 28,828 | 9,224 | 61,798 | 6,091 | 3,936 | 466.5 | 8.5 | 63 |
| 2024 | 28,192 | 8,995 | 62,068 | 5,747 | 3,505 | 454.2 | 9.9 | 72 |
| 2023 | 24,393 | 7,805 | 49,012 | 4,307 | 2,627 | 497.7 | 8.4 | 54 |
| 2022 | 21,753 | 6,962 | 49,527 | 4,350 | 2,917 | 439.2 | 6.9 | 37 |
| 2021 | 24,439 | 7,811 | 53,521 | 5,338 | 2,431 | 456.6 | 7.2 | 38 |
| 2020 | 19,602 | 6,219 | 40,204 | 4,108 | 5,206 | 487.6 | 10.7 | 65 |
| 2019 | 15,172 | 4,785 | 36,210 | 3,404 | 2,413 | 419.0 | 6.6 | 29 |
Vessel particulars
- IMO number
- 9818058
- Previously reported as
- EIKEVIKEN
- MMSI
- 636023947
- Call sign
- 5LQF3
- Ship type
- Oil tanker
- Gross tonnage
- 61,468
- Length overall
- 250.0 m
- Beam
- 43.8 m
- Year built
- 2019
- Flag state
- Liberia 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
- Samsung Heavy Industries
- Port of registry
- Monrovia MRV 2025
- Home port
- Monrovia
- Ice class
- IA
- Technical efficiency (design)
- EEDI (3.27 gCO₂/t·nm)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2026-03-20
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 909 of 1,448 qualifying oil tankers by EEOI, at the 63rd percentile. The dashed line is the type median, 7.5; this vessel reported 8.5.
EEOI divides emissions by transport work, which for this vessel and year was 3,383,569,249 tonne-miles over 61,798 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 90.0% higher than in 2019, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 2.3% while distance sailed fell 0.4%and CO₂ per nautical mile rose 2.7%.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
- 29,281 t
- Methane (CH₄)
- 0.46 t
- Nitrous oxide (N₂O)
- 1.66 t
- Under EU ETS
- 19,454 t, 67% of total
Observed movementsAIS · Norwegian waters
- First seen
- 03 Jul 2025
- Last seen
- 22 Feb 2026
- Days observed
- 29
- Positions
- 1,405
- Median speed
- 10.8 kn
Its recorded positions span 58.0°N to 60.9°N and 4.4°E to 9.6°E.
224 hourly points from 1,405 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 |
|---|---|---|
| 2019 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2020 | NORMEC VERIFAVIA SAS | France |
| 2023 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
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 2019–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
- Movements: Norwegian Coastal Administration open AIS extract.
This page draws on 7 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars, AIS movements in Norwegian waters and a name history. Not found in the sources for this vessel: 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.