Oil tanker · Liberia flag · built 2006
FREJA HAFNIA: CO₂ emissions 2018–2025
IMO 9311036 EU ETS5 reporting years
- CO₂ reported 2025
- 13,320 t
- Fuel burned
- 4,227 t
- Distance
- 45,174 nm
- Time at sea
- 4,211 h
- Emitted at berth
- 6% of total
- Share of year under way
- 48%
- Gross tonnage
- 31,433
FREJA HAFNIA against its type
Built in 2006, it is 4 years older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 31,433 gross tonnage it is smaller than 68% 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 307 other vessels here, 48 of them oil tankers. Its MRV returns name it FREJA HAFNIA for 2018 and OKEE JOHN T for 2022–2025. The returns for 2022–2025 all give MONROVIA as port of registry.
Its 13,320 t of CO₂ for 2025 is 1.7 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 294.9 kg CO₂, 27% below the type median of 403.2 kg. It logged 4,211 hours at sea against a median of 2,030 hours for its type that year. 5.7% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 5 years with reported emissions, the highest was 2025 (13,320 t) and the lowest 2024 (1,071 t). Its efficiency percentile within the type went from 44 in 2018 to 64 in 2025 (lower is more efficient). Of the 2 sister ships 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 | 13,320 | 4,227 | 45,174 | 4,211 | 764 | 294.9 | 8.8 | 64 |
| 2024 | 1,071 | 340 | — | 405 | 44 | 237.4 | — | not ranked |
| 2023 | 2,949 | 930 | 10,426 | 877 | 250 | 282.9 | 9.1 | 60 |
| 2022 | 1,562 | 494 | — | 498 | 92 | 303.5 | 13.4 | not ranked |
| 2018 | 2,547 | 810 | 8,743 | 664 | 134 | 291.3 | 8.0 | 44 |
Vessel particulars
- IMO number
- 9311036
- Previously reported as
- OKEE JOHN T
- Ship type
- Oil tanker
- Gross tonnage
- 31,433
- Length overall
- 185.9 m
- Beam
- 32.2 m
- Year built
- 2006
- Flag state
- Liberia per EU MRV 2025
- Builder
- Shin Kurushima Dockyard
- Port of registry
- MONROVIA MRV 2025
- Technical efficiency (design)
- EEXI (4.79 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-31
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 933 of 1,448 qualifying oil tankers by EEOI, at the 64th percentile. The dashed line is the type median, 7.5; this vessel reported 8.8.
EEOI divides emissions by transport work, which for this vessel and year was 1,518,810,718 tonne-miles over 45,174 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 423.0% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2020, 2021, so the series has gaps.
From 2024 to 2025, emissions rose 1,143.4% and CO₂ per nautical mile rose 24.2%.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
- 13,528 t
- Methane (CH₄)
- 0.21 t
- Nitrous oxide (N₂O)
- 0.76 t
- Under EU ETS
- 7,812 t, 59% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Nippon Kaiji Kyokai | Japan |
| 2024 | 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 5 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars and a name history. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.