Oil tanker · Antigua and Barbuda flag · built 1998
ANFA: CO₂ emissions 2018–2025
IMO 9173032 EU ETS6 reporting years
- CO₂ reported 2025
- 2,481 t
- Fuel burned
- 774 t
- Distance
- 27,088 nm
- Time at sea
- 4,059 h
- Emitted at berth
- 2% of total
- Share of year under way
- 46%
- Gross tonnage
- 5,281
ANFA against its type
Built in 1998, it is 12 years older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 5,281 gross tonnage it is smaller than 99% of the other 2,841 oil tankers with a recorded tonnage. It is one of 8 oil tankers here under the Antigua and Barbuda flag, 0.2% of the 3,548 on the register. Its MRV returns name it ANFA for 2018–2019, LEOPOLD for 2022–2024 and NEXUS for 2025. The reported port of registry changed: Casablanca (2018–2019), then MONROVIA (2022–2024), then St. John's (2025).
Its 2,481 t of CO₂ for 2025 is 69% 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 91.6 kg CO₂, 77% below the type median of 403.2 kg. It logged 4,059 hours at sea against a median of 2,030 hours for its type that year. 2.0% 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 (2,481 t) and the lowest 2019 (96 t). Of the 5 comparable vessels 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 | 2,481 | 774 | 27,088 | 4,059 | 49 | 91.6 | 0.5 | 0 |
| 2024 | 1,816 | 566 | — | 2,167 | 31 | 101.0 | 35.3 | not ranked |
| 2023 | 464 | 145 | — | 3,835 | 52 | 50.8 | 17.2 | not ranked |
| 2022 | 803 | 250 | — | 407 | 37 | 211.4 | 164.4 | not ranked |
| 2019 | 96 | 31 | — | 116 | 3 | 161.6 | 74.4 | not ranked |
| 2018 | 470 | 150 | — | 294 | 12 | 145.4 | 34.5 | not ranked |
Vessel particulars
- IMO number
- 9173032
- Previously reported as
- LEOPOLD, NEXUS
- Ship type
- Oil tanker
- Gross tonnage
- 5,281
- Year built
- 1998
- Flag state
- Antigua and Barbuda per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Morocco. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- St. John's MRV 2025
- Technical efficiency (design)
- EEXI (14.3 gCO₂/t·nm)
- Verifier
- ICS Verification Services Single Member P.C., Greece
- Accreditation
- 1101-3
- Compliance document issued
- 2026-04-14
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1 of 1,448 qualifying oil tankers by EEOI, at the 0th percentile. The dashed line is the type median, 7.5; this vessel reported 0.5.
EEOI divides emissions by transport work, which for this vessel and year was 4,962,580,000 tonne-miles over 27,088 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 427.6% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2020, 2021, so the series has gaps.
From 2024 to 2025, emissions rose 36.6% and CO₂ per nautical mile fell 9.3%.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
- 2,519 t
- Methane (CH₄)
- 0.04 t
- Nitrous oxide (N₂O)
- 0.14 t
- Under EU ETS
- 2,098 t, 85% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2022 | HELLENIC LLOYD'S S.A. | Greece |
| 2024 | NORMEC VERIFAVIA SAS | France |
| 2025 | ICS Verification Services Single Member P.C. | 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 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 6 MRV reporting years, an efficiency ranking, 3 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.