Chemical tanker · Singapore flag
THERESA DUA: CO₂ emissions 2023–2025
IMO 9919723 EU ETS3 reporting years
- CO₂ reported 2025
- 5,426 t
- Fuel burned
- 1,725 t
- Distance
- 18,609 nm
- Time at sea
- 1,571 h
- Emitted at berth
- 7% of total
- Share of year under way
- 18%
THERESA DUA against its type
It is one of 205 chemical tankers here under the Singapore flag, 8.7% of the 2,344 on the register. The reported port of registry changed: Hong Kong (2023–2024), then Singapore (2025).
Its 5,426 t of CO₂ for 2025 is close to the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 291.6 kg CO₂, 17% above the type median of 250.2 kg. It logged 1,571 hours at sea against a median of 2,106 hours for its type that year. 7.1% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 3 years with reported emissions, the highest was 2024 (6,731 t) and the lowest 2025 (5,426 t). Its efficiency percentile within the type went from 8 in 2023 to 6 in 2025 (lower is more efficient). Of the 7 comparable vessels listed below with a 2025 return, 5 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2023–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 5,426 | 1,725 | 18,609 | 1,571 | 387 | 291.6 | 7.3 | 6 |
| 2024 | 6,731 | 2,126 | 22,405 | 1,861 | 686 | 300.4 | 9.1 | 15 |
| 2023 | 6,299 | 1,986 | 20,378 | 1,700 | 614 | 309.1 | 8.6 | 8 |
Vessel particulars
- IMO number
- 9919723
- Call sign
- 9VET4
- Ship type
- Chemical tanker
- Length overall
- 183.0 m
- Beam
- 32.0 m
- Flag state
- Singapore per EU MRV 2025
- Port of registry
- Singapore MRV 2025
- Technical efficiency (design)
- EEXI (3.81 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-11
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 77 of 1,348 qualifying chemical tankers by EEOI, at the 6th percentile. The dashed line is the type median, 14.4; this vessel reported 7.3.
EEOI divides emissions by transport work, which for this vessel and year was 740,309,686 tonne-miles over 18,609 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 13.8% lower than in 2023, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 19.4% while distance sailed fell 16.9%and CO₂ per nautical mile fell 2.9%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 5,511 t
- Methane (CH₄)
- 0.09 t
- Nitrous oxide (N₂O)
- 0.31 t
- Under EU ETS
- 2,995 t, 55% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2023 | Bureau Veritas Certification France | France |
| 2025 | 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 2023–2025, published by the European Commission.
This page draws on 3 MRV reporting years, an efficiency ranking and 2 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.