Oil tanker · Portugal flag
MONTE UDALA: CO₂ emissions 2018–2025
IMO 9785823 MMSI 255806022EU ETS8 reporting years
- CO₂ reported 2025
- 21,321 t
- Fuel burned
- 6,742 t
- Distance
- 46,041 nm
- Time at sea
- 4,309 h
- Emitted at berth
- 13% of total
- Share of year under way
- 49%
MONTE UDALA against its type
It is one of 56 oil tankers here under the Portugal flag, 1.6% of the 3,548 on the register. The returns for 2018–2025 all give Madeira as port of registry.
Its 21,321 t of CO₂ for 2025 is 2.7 times the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 463.1 kg CO₂, 15% above the type median of 403.2 kg. It logged 4,309 hours at sea against a median of 2,030 hours for its type that year. 13.4% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 8 years with reported emissions, the highest was 2022 (36,122 t) and the lowest 2018 (20,775 t). Its efficiency percentile within the type went from 33 in 2024 to 45 in 2025 (lower is more efficient). Of the 6 comparable vessels listed below with a 2025 return, 5 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 | 21,321 | 6,742 | 46,041 | 4,309 | 2,852 | 463.1 | 7.1 | 45 |
| 2024 | 35,463 | 11,243 | 82,738 | 6,973 | 4,178 | 428.6 | 6.3 | 33 |
| 2023 | 26,418 | 8,382 | — | 5,686 | 2,336 | 438.1 | 0.4 | not ranked |
| 2022 | 36,122 | 11,442 | — | 7,329 | 3,494 | 497.3 | 0.3 | not ranked |
| 2021 | 29,013 | 9,192 | — | 5,896 | 2,507 | 465.6 | 0.4 | not ranked |
| 2020 | 27,426 | 8,687 | — | 4,765 | 2,536 | 469.3 | 0.4 | not ranked |
| 2019 | 23,747 | 7,595 | — | 5,137 | 1,776 | 425.8 | 0.3 | not ranked |
| 2018 | 20,775 | 6,648 | — | 4,284 | 3,761 | 449.9 | 0.4 | not ranked |
Vessel particulars
- IMO number
- 9785823
- MMSI
- 255806022
- Ship type
- Oil tanker
- Length overall
- 274.0 m
- Beam
- 48.0 m
- Flag state
- Portugal per EU MRV 2025
- Port of registry
- Madeira MRV 2025
- Home port
- Madeira
- Technical efficiency (design)
- EEDI (2.71 gCO₂/t·nm)
- Verifier
- HELLENIC LLOYD'S S.A., Greece
- Accreditation
- 1190
- Compliance document issued
- 2026-02-24
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 654 of 1,448 qualifying oil tankers by EEOI, at the 45th percentile. The dashed line is the type median, 7.5; this vessel reported 7.1.
EEOI divides emissions by transport work, which for this vessel and year was 3,003,022,535 tonne-miles over 46,041 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 2.6% higher than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 39.9% while distance sailed fell 44.4%and CO₂ per nautical mile rose 8.0%.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
- 21,652 t
- Methane (CH₄)
- 0.34 t
- Nitrous oxide (N₂O)
- 1.21 t
- Under EU ETS
- 12,935 t, 61% of total
Observed movementsAIS · Norwegian waters
- First seen
- 03 Apr 2026
- Last seen
- 05 Apr 2026
- Days observed
- 3
- Positions
- 99
- Median speed
- 9.3 kn
Its recorded positions span 60.8°N to 60.9°N and 4.4°E to 5.1°E.
40 hourly points from 99 positions. Filled circle first, open circle last; squares are ports for orientation, not calls.
Norwegian Coastal Administration open AIS, Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap means the vessel was not recorded here, not that it was idle or that a transponder was off.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2020 | 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.
- Movements: Norwegian Coastal Administration open AIS extract.
This page draws on 8 MRV reporting years, an efficiency ranking, 2 of 5 vessel particulars and AIS movements in Norwegian waters. Not found in the sources for this vessel: 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.