Oil tanker · Gibraltar flag · built 2008
AURORA N: CO₂ emissions 2018–2025
IMO 9346445 EU ETS6 reporting years
- CO₂ reported 2025
- 11,940 t
- Fuel burned
- 3,778 t
- Distance
- 19,820 nm
- Time at sea
- 2,265 h
- Emitted at berth
- 19% of total
- Share of year under way
- 26%
- Gross tonnage
- 38,899
AURORA N against its type
Built in 2008, it is 2 years older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 38,899 gross tonnage it is smaller than 67% of the other 2,841 oil tankers with a recorded tonnage. It is one of 10 oil tankers here under the Gibraltar flag, 0.3% of the 3,548 on the register. Its MRV returns name it AURORA N for 2018–2022 and HTM DEFENDER for 2024–2025. The reported port of registry changed: Panama (2018–2022), then GIBRALTAR (2024–2025).
Its 11,940 t of CO₂ for 2025 is 1.5 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 602.5 kg CO₂, 49% above the type median of 403.2 kg. It logged 2,265 hours at sea against a median of 2,030 hours for its type that year. 18.7% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 6 years with reported emissions, the highest was 2025 (11,940 t) and the lowest 2020 (2,185 t). Its efficiency percentile within the type went from 70 in 2018 to 97 in 2025 (lower is more efficient). The one comparable vessel 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 | 11,940 | 3,778 | 19,820 | 2,265 | 2,234 | 602.5 | 27.6 | 97 |
| 2024 | 9,743 | 3,101 | 23,883 | 1,281 | 1,095 | 407.9 | 27.7 | 97 |
| 2022 | 9,087 | 2,834 | 18,691 | 1,730 | 2,973 | 486.2 | 9.9 | 66 |
| 2020 | 2,185 | 689 | 3,808 | 387 | 0 | 573.7 | 13.7 | 77 |
| 2019 | 10,212 | 3,251 | 20,924 | 2,084 | 494 | 488.1 | 16.4 | 85 |
| 2018 | 3,842 | 1,222 | 7,633 | 643 | 466 | 503.4 | 11.4 | 70 |
Vessel particulars
- IMO number
- 9346445
- Previously reported as
- HTM DEFENDER
- Ship type
- Oil tanker
- Gross tonnage
- 38,899
- Length overall
- 228.0 m
- Year built
- 2008
- Flag state
- Gibraltar per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Panama. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- GIBRALTAR MRV 2025
- Ice class
- IA
- Technical efficiency (design)
- EEXI (4.41 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-02-11
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,401 of 1,448 qualifying oil tankers by EEOI, at the 97th percentile. The dashed line is the type median, 7.5; this vessel reported 27.6.
EEOI divides emissions by transport work, which for this vessel and year was 432,623,188 tonne-miles over 19,820 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 210.8% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2021, 2023, so the series has gaps.
From 2024 to 2025, emissions rose 22.6% while distance sailed fell 17.0%and CO₂ per nautical mile rose 47.7%.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
- 12,126 t
- Methane (CH₄)
- 0.19 t
- Nitrous oxide (N₂O)
- 0.68 t
- Under EU ETS
- 11,117 t, 93% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2022 | ICS Verification Services Single Member P.C. | Greece |
| 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 6 MRV reporting years, an efficiency ranking, 4 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.