Other ship types · Portugal flag
AAL HOUSTON: CO₂ emissions 2024–2025
IMO 9958779 EU ETS2 reporting years
- CO₂ reported 2025
- 8,755 t
- Fuel burned
- 2,800 t
- Distance
- 35,251 nm
- Time at sea
- 2,761 h
- Emitted at berth
- 5% of total
- Share of year under way
- 32%
AAL HOUSTON against its type
It is one of 52 vessels in the other ship types category here under the Portugal flag, 10.4% of the 499 on the register. The returns for 2024–2025 all give Madeira as port of registry.
Its 8,755 t of CO₂ for 2025 is 1.7 times the median of 5,122 t among the 335 vessels in the other ship types category on this register that reported for 2025. Per nautical mile it emitted 248.4 kg CO₂, close to the type median of 231.1 kg. It logged 2,761 hours at sea against a median of 2,231 hours for its type that year. 4.8% of its 2025 emissions were at berth; the median for vessels in the other ship types category was 3.9%. Its efficiency percentile within the type went from 23 in 2024 to 7 in 2025 (lower is more efficient). Of the 8 comparable vessels listed below with a 2025 return, 3 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2024–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 8,755 | 2,800 | 35,251 | 2,761 | 420 | 248.4 | 24.2 | 7 |
| 2024 | 4,247 | 1,356 | 19,508 | 1,536 | 250 | 217.7 | 25.0 | 23 |
Vessel particulars
- IMO number
- 9958779
- Ship type
- Other ship types
- Flag state
- Portugal per EU MRV 2025
- Port of registry
- Madeira MRV 2025
- Home port
- Madeira
- Technical efficiency (design)
- EEDI (6.22 gCO₂/t·nm)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2026-04-08
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 9 of 119 qualifying other ship typess by EEOI, at the 7th percentile. The dashed line is the type median, 69.3; this vessel reported 24.2.
EEOI divides emissions by transport work, which for this vessel and year was 361,942,952 tonne-miles over 35,251 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 106.2% higher than in 2024, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 106.2% while distance sailed rose 80.7%and CO₂ per nautical mile rose 14.1%.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
- 8,893 t
- Methane (CH₄)
- 0.14 t
- Nitrous oxide (N₂O)
- 0.50 t
- Under EU ETS
- 4,823 t, 55% of total
Laden voyages2025
- CO₂ on laden voyages
- 7,251 t, 83% of total
- Fuel, laden
- 2,322 t
- CO₂ per nm, laden
- 238.6 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2024–2025, published by the European Commission.
This page draws on 2 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.