Oil tanker · Malta flag
ROSSA: CO₂ emissions 2018–2025
IMO 9391505 EU ETS5 reporting years
- CO₂ reported 2025
- 8,657 t
- Fuel burned
- 2,715 t
- Distance
- 26,297 nm
- Time at sea
- 4,224 h
- Emitted at berth
- 12% of total
- Share of year under way
- 48%
ROSSA against its type
It is one of 289 oil tankers here under the Malta flag, 8.1% of the 3,548 on the register. Its MRV returns name it VALROSSA for 2018–2024 and ROSSA for 2025. The returns for 2020–2025 all give Valletta as port of registry.
Its 8,657 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 329.2 kg CO₂, 18% below the type median of 403.2 kg. It logged 4,224 hours at sea against a median of 2,030 hours for its type that year. 12.0% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 4 years with reported emissions, the highest was 2023 (9,421 t) and the lowest 2018 (4,076 t). Its efficiency percentile within the type went from 7 in 2018 to 94 in 2025 (lower is more efficient). Of the 2 comparable vessels listed below with a 2025 return, 1 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 | 8,657 | 2,715 | 26,297 | 4,224 | 1,036 | 329.2 | 21.8 | 94 |
| 2024 | 5,576 | 1,761 | 17,926 | 1,229 | 524 | 311.1 | 11.9 | 81 |
| 2023 | 9,421 | 2,972 | 30,957 | 3,016 | 652 | 304.3 | 11.4 | 76 |
| 2020 | No EU/EEA voyages reported | |||||||
| 2018 | 4,076 | 1,301 | 10,350 | 694 | 391 | 393.8 | 3.5 | 7 |
Vessel particulars
- IMO number
- 9391505
- Previously reported as
- VALROSSA
- Ship type
- Oil tanker
- Flag state
- Malta per EU MRV 2025
- Port of registry
- Valletta MRV 2025
- Technical efficiency (design)
- EEXI (4.94 gCO₂/t·nm)
- Verifier
- HELLENIC LLOYD'S S.A., Greece
- Accreditation
- 1190
- Compliance document issued
- 2026-03-14
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,354 of 1,448 qualifying oil tankers by EEOI, at the 94th percentile. The dashed line is the type median, 7.5; this vessel reported 21.8.
EEOI divides emissions by transport work, which for this vessel and year was 396,725,023 tonne-miles over 26,297 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 112.4% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2021, 2022, so the series has gaps.
From 2024 to 2025, emissions rose 55.2% while distance sailed rose 46.7%and CO₂ per nautical mile rose 5.8%.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
- 8,790 t
- Methane (CH₄)
- 0.14 t
- Nitrous oxide (N₂O)
- 0.49 t
- Under EU ETS
- 900 t, 10% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | RINA Services Spa | Italy |
| 2025 | HELLENIC LLOYD'S S.A. | 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.
This page draws on 5 MRV reporting years, an efficiency ranking, 1 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.