Oil tanker · Singapore flag · built 2019
BW NESO: CO₂ emissions 2020–2025
IMO 9800312 EU ETS6 reporting years
- CO₂ reported 2025
- 4,465 t
- Fuel burned
- 1,426 t
- Time at sea
- 1,011 h
- Emitted at berth
- 11% of total
- Share of year under way
- 12%
BW NESO against its type
Built in 2019, it is 9 years newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). It is one of 237 oil tankers here under the Singapore flag, 6.7% of the 3,548 on the register. The same builder is recorded for 53 other vessels here, 37 of them oil tankers. Its MRV returns name it BW NESO for 2020–2023 and HAFNIA NESO for 2024–2025. The returns for 2020–2025 all give Singapore as port of registry.
Its 4,465 t of CO₂ for 2025 is 44% 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 396.2 kg CO₂, close to the type median of 403.2 kg. It logged 1,011 hours at sea against a median of 2,030 hours for its type that year. 10.7% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 6 years with reported emissions, the highest was 2021 (12,768 t) and the lowest 2023 (4,407 t). Its efficiency percentile within the type went from 10 in 2020 to 12 in 2024 (lower is more efficient). Of the 3 sister ships listed below with a 2025 return, 1 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2020–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 4,465 | 1,426 | — | 1,011 | 477 | 396.2 | 45.6 | not ranked |
| 2024 | 5,515 | 1,762 | 16,126 | 1,546 | 503 | 342.0 | 4.5 | 12 |
| 2023 | 4,407 | 1,407 | 11,774 | 1,128 | 323 | 374.3 | 6.9 | 38 |
| 2022 | 11,173 | 3,577 | 30,579 | 2,833 | 711 | 365.4 | 4.1 | 5 |
| 2021 | 12,768 | 4,071 | 34,174 | 3,000 | 1,234 | 373.6 | 4.7 | 10 |
| 2020 | 10,366 | 3,308 | 28,525 | 2,577 | 1,455 | 363.4 | 4.7 | 10 |
Vessel particulars
- IMO number
- 9800312
- Previously reported as
- HAFNIA NESO
- Ship type
- Oil tanker
- Year built
- 2019
- Flag state
- Singapore per EU MRV 2025
- Builder
- Daehan Shipbuilding
- Port of registry
- Singapore MRV 2025
- Technical efficiency (design)
- EEXI (3.3 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: transport work below the floor (2025)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-02-23
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 56.9% lower than in 2020, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 19.0% and CO₂ per nautical mile rose 15.9%.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
- 4,535 t
- Methane (CH₄)
- 0.07 t
- Nitrous oxide (N₂O)
- 0.26 t
- Under EU ETS
- 2,471 t, 55% of total
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2020–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 6 MRV reporting years, 3 of 5 vessel particulars and a name history. Not found in the sources for this vessel: an efficiency ranking, 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.