Chemical tanker · Liberia flag
DIANELLA: CO₂ emissions 2022–2025
IMO 9901087 EU ETS3 reporting years
- CO₂ reported 2025
- 1,595 t
- Fuel burned
- 508 t
- Distance
- 4,774 nm
- Time at sea
- 413 h
- Emitted at berth
- 5% of total
- Share of year under way
- 5%
DIANELLA against its type
It is one of 402 chemical tankers here under the Liberia flag, 17.2% of the 2,344 on the register. The returns for 2022–2025 all give Monrovia as port of registry.
Its 1,595 t of CO₂ for 2025 is 71% below the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 334.2 kg CO₂, 34% above the type median of 250.2 kg. It logged 413 hours at sea against a median of 2,106 hours for its type that year. 5.1% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 3 years with reported emissions, the highest was 2022 (13,270 t) and the lowest 2025 (1,595 t). Its efficiency percentile within the type went from 31 in 2022 to 22 in 2025 (lower is more efficient). Of the 5 comparable vessels listed below with a 2025 return, 5 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2022–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 1,595 | 508 | 4,774 | 413 | 81 | 334.2 | 9.4 | 22 |
| 2023 | 4,338 | 1,388 | 17,831 | 1,488 | 240 | 243.3 | 10.0 | 17 |
| 2022 | 13,270 | 4,194 | 43,243 | 3,366 | 1,688 | 306.9 | 12.1 | 31 |
Vessel particulars
- IMO number
- 9901087
- Ship type
- Chemical tanker
- Flag state
- Liberia per EU MRV 2025
- Port of registry
- Monrovia MRV 2025
- Technical efficiency (design)
- EEDI (4.08 gCO₂/t·nm)
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2026-03-03
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 295 of 1,348 qualifying chemical tankers by EEOI, at the 22nd percentile. The dashed line is the type median, 14.4; this vessel reported 9.4.
EEOI divides emissions by transport work, which for this vessel and year was 169,183,457 tonne-miles over 4,774 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 88.0% lower than in 2022, for EU/EEA voyages only. No return is recorded for 2024, so the series has gaps.
From 2023 to 2025, emissions fell 63.2% while distance sailed fell 73.2%and CO₂ per nautical mile rose 37.4%.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
- 1,620 t
- Methane (CH₄)
- 0.03 t
- Nitrous oxide (N₂O)
- 0.09 t
- Under EU ETS
- 838 t, 53% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2022 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2025 | NORMEC VERIFAVIA SAS | France |
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 2022–2025, published by the European Commission.
This page draws on 3 MRV reporting years, an efficiency ranking and 1 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.