Oil tanker · Marshall Islands flag · built 2008
ARDMORE SEALEADER: CO₂ emissions 2018–2025
IMO 9367712 EU ETS6 reporting years
- CO₂ reported 2025
- 7,804 t
- Fuel burned
- 2,472 t
- Distance
- 27,120 nm
- Time at sea
- 2,401 h
- Emitted at berth
- 12% of total
- Share of year under way
- 27%
- Gross tonnage
- 26,900
ARDMORE SEALEADER 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 26,900 gross tonnage it is smaller than 86% of the other 2,841 oil tankers with a recorded tonnage. It is one of 793 oil tankers here under the Marshall Islands flag, 22.4% of the 3,548 on the register. The same builder is recorded for 103 other vessels here, 61 of them oil tankers. Its MRV returns name it ARDMORE SEALEADER for 2018–2021 and HANSA SEALEADER for 2024–2025. The returns for 2018–2025 all give Majuro as port of registry.
Its 7,804 t of CO₂ for 2025 is close to the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 287.8 kg CO₂, 29% below the type median of 403.2 kg. It logged 2,401 hours at sea against a median of 2,030 hours for its type that year. 12.1% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 6 years with reported emissions, the highest was 2024 (8,075 t) and the lowest 2021 (2,674 t). Its efficiency percentile within the type went from 71 in 2018 to 64 in 2025 (lower is more efficient). Of the 4 sister ships listed below with a 2025 return, 2 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 | 7,804 | 2,472 | 27,120 | 2,401 | 943 | 287.8 | 8.6 | 64 |
| 2024 | 8,075 | 2,566 | 30,311 | 2,576 | 693 | 266.4 | 7.9 | 54 |
| 2021 | 2,674 | 846 | 11,108 | 998 | 188 | 240.8 | 10.5 | 66 |
| 2020 | 3,810 | 1,205 | 14,521 | 1,171 | 447 | 262.4 | 9.7 | 58 |
| 2019 | 5,325 | 1,692 | 19,188 | 2,249 | 288 | 277.5 | 10.0 | 63 |
| 2018 | 3,638 | 1,160 | 13,297 | 1,478 | 273 | 273.6 | 11.6 | 71 |
Vessel particulars
- IMO number
- 9367712
- Previously reported as
- HANSA SEALEADER
- Ship type
- Oil tanker
- Gross tonnage
- 26,900
- Length overall
- 182.5 m
- Year built
- 2008
- Flag state
- Marshall Islands per EU MRV 2025
- Builder
- Onomichi Dockyard
- Port of registry
- Majuro MRV 2025
- Technical efficiency (design)
- EEXI (5.09 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 920 of 1,448 qualifying oil tankers by EEOI, at the 64th percentile. The dashed line is the type median, 7.5; this vessel reported 8.6.
EEOI divides emissions by transport work, which for this vessel and year was 903,214,120 tonne-miles over 27,120 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 114.5% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2022, 2023, so the series has gaps.
From 2024 to 2025, emissions fell 3.4% while distance sailed fell 10.5%and CO₂ per nautical mile rose 8.0%.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 7,925 t
- Methane (CH₄)
- 0.12 t
- Nitrous oxide (N₂O)
- 0.44 t
- Under EU ETS
- 5,086 t, 65% 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 |
| 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, 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.