Oil tanker · Hong Kong flag · built 2001
UNIQUE GUARDIAN: CO₂ emissions 2018–2025
IMO 9540821 EU ETS6 reporting years
- CO₂ reported 2025
- 6,284 t
- Fuel burned
- 1,984 t
- Distance
- 20,897 nm
- Time at sea
- 1,881 h
- Emitted at berth
- 11% of total
- Share of year under way
- 21%
- Gross tonnage
- 29,411
UNIQUE GUARDIAN against its type
Built in 2001, it is 9 years older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 29,411 gross tonnage it is smaller than 78% of the other 2,841 oil tankers with a recorded tonnage. It is one of 139 oil tankers here under the Hong Kong flag, 3.9% of the 3,548 on the register. The same builder is recorded for 103 other vessels here, 61 of them oil tankers. Anglo Eastern Shipmanagement Pte Ltd. is linked to 70 vessels on this register. The returns for 2018–2025 all give Hong Kong as port of registry.
Its 6,284 t of CO₂ for 2025 is 21% below the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 300.7 kg CO₂, 25% below the type median of 403.2 kg. It logged 1,881 hours at sea against a median of 2,030 hours for its type that year. 10.9% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 5 years with reported emissions, the highest was 2018 (6,627 t) and the lowest 2023 (1,486 t). Its efficiency percentile within the type went from 52 in 2018 to 68 in 2025 (lower is more efficient). 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 | 6,284 | 1,984 | 20,897 | 1,881 | 685 | 300.7 | 9.3 | 68 |
| 2023 | 1,486 | 477 | — | 496 | 103 | 245.8 | 10.0 | not ranked |
| 2022 | 2,248 | 713 | — | 504 | 125 | 324.7 | 15.5 | not ranked |
| 2021 | No EU/EEA voyages reported | |||||||
| 2020 | 5,908 | 1,854 | 20,788 | 1,785 | 565 | 284.2 | 10.2 | 61 |
| 2018 | 6,627 | 2,103 | 22,878 | 2,262 | 847 | 289.7 | 8.8 | 52 |
Vessel particulars
- IMO number
- 9540821
- Ship type
- Oil tanker
- Gross tonnage
- 29,411
- Length overall
- 182.5 m
- Year built
- 2001
- Flag state
- Hong Kong per EU MRV 2025
- Builder
- Onomichi Dockyard
- Port of registry
- Hong Kong MRV 2025
- Technical efficiency (design)
- EEXI (4.94 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
- 2026-03-27
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 983 of 1,448 qualifying oil tankers by EEOI, at the 68th percentile. The dashed line is the type median, 7.5; this vessel reported 9.3.
Across the 58 ranked vessels operated by Anglo Eastern Shipmanagement Pte Ltd., the median percentile is 43. This vessel is less efficient than its own fleet median.
EEOI divides emissions by transport work, which for this vessel and year was 678,619,870 tonne-miles over 20,897 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 5.2% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2024, so the series has gaps.
From 2023 to 2025, emissions rose 322.8% and CO₂ per nautical mile rose 22.4%.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
- 6,381 t
- Methane (CH₄)
- 0.10 t
- Nitrous oxide (N₂O)
- 0.36 t
- Under EU ETS
- 4,317 t, 69% of total
Laden voyages2025
- CO₂ on laden voyages
- 4,651 t, 74% of total
- Fuel, laden
- 1,473 t
- CO₂ per nm, laden
- 259.4 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
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 and 5 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.