General cargo ship · Portugal flag · built 2012
ARA ROTTERDAM: CO₂ emissions 2019–2025
IMO 9549566 EU ETS7 reporting years
- CO₂ reported 2025
- 6,478 t
- Fuel burned
- 2,067 t
- Time at sea
- 2,715 h
- Emitted at berth
- 2% of total
- Share of year under way
- 31%
- Gross tonnage
- 9,963
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ARA ROTTERDAM against its type
Built in 2012, it is 5 years newer than the median general cargo ship on this register, which was built in 2007 (2,852 vessels with a known build year). At 9,963 gross tonnage it is larger than 66% of the other 2,665 general cargo ships with a recorded tonnage. It is one of 187 general cargo ships here under the Portugal flag, 6.1% of the 3,081 on the register. The same builder is recorded for 14 other vessels here, 12 of them general cargo ships. Its MRV returns name it STELLAR MAESTRO for 2019–2023 and ARA ROTTERDAM for 2024–2025. The reported port of registry changed: ST.John's (2019), then St.John (2022), then St.John's (2023), then Madeira (2024–2025).
Its 6,478 t of CO₂ for 2025 is 2.3 times the median of 2,820 t among the 2,469 general cargo ships on this register that reported for 2025. Per nautical mile it emitted 198.2 kg CO₂, 1.6 times the type median of 122.2 kg. It logged 2,715 hours at sea against a median of 3,044 hours for its type that year. 1.5% of its 2025 emissions were at berth; the median for general cargo ships was 4.3%. Across 7 years with reported emissions, the highest was 2021 (9,116 t) and the lowest 2024 (1,242 t). Its efficiency percentile within the type went from 4 in 2019 to 55 in 2022 (lower is more efficient). Of the 4 sister ships listed below with a 2025 return, 4 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2019–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 6,478 | 2,067 | — | 2,715 | 100 | 198.2 | — | — |
| 2024 | 1,242 | 396 | — | 584 | 40 | 181.4 | — | — |
| 2023 | 6,143 | 1,932 | — | 6,168 | 370 | 162.9 | — | — |
| 2022 | 4,349 | 1,383 | 21,999 | 1,920 | 229 | 197.7 | 25.2 | 55 |
| 2021 | 9,116 | 2,908 | 55,636 | 6,281 | 201 | 163.8 | 27.6 | 70 |
| 2020 | 4,848 | 1,550 | — | 2,415 | 79 | 151.7 | — | not ranked |
| 2019 | 8,153 | 2,604 | 54,279 | 7,120 | 238 | 150.2 | 9.4 | 4 |
Vessel particulars
- IMO number
- 9549566
- Previously reported as
- STELLAR MAESTRO
- Ship type
- General cargo ship
- Gross tonnage
- 9,963
- Length overall
- 146.0 m
- Beam
- 20.0 m
- Year built
- 2012
- Flag state
- Portugal per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Antigua and Barbuda. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- Damen Shipyards Gorinchem
- Port of registry
- Madeira MRV 2025
- Ice class
- IA
- Technical efficiency (design)
- EEXI (8.87 gCO₂/t·nm)
- Verifier
- RINA HELLAS LTD, Greece
- Accreditation
- 1325
- Compliance document issued
- 2026-01-26
- Compliance document expires
- 2027-06-30
Efficiency against its own type2022
Position 225 of 406 qualifying general cargo ships by EEOI, at the 55th percentile. The dashed line is the type median, 23.3; this vessel reported 25.2.
EEOI divides emissions by transport work, which for this vessel and year was 172,714,853 tonne-miles over 21,999 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 20.5% lower than in 2019, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 421.5% and CO₂ per nautical mile rose 9.2%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 6,580 t
- Methane (CH₄)
- 0.10 t
- Nitrous oxide (N₂O)
- 0.37 t
- Under EU ETS
- 3,455 t, 53% of total
Laden voyages2025
- CO₂ on laden voyages
- 6,478 t, 100% of total
- Fuel, laden
- 2,067 t
- CO₂ per nm, laden
- 231.6 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2019 | RINA Services Spa | Italy |
| 2022 | NORMEC VERIFAVIA SAS | France |
| 2025 | RINA HELLAS LTD | 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 2019–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 7 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.