Ro-pax ship · Italy flag · built 1987
GNV ALLEGRA: CO₂ emissions 2018–2025
IMO 8506311 EU ETS8 reporting years
- CO₂ reported 2025
- 26,728 t
- Fuel burned
- 8,470 t
- Time at sea
- 2,829 h
- Emitted at berth
- 20% of total
- Share of year under way
- 32%
- Gross tonnage
- 31,122
GNV ALLEGRA against its type
Built in 1987, it is 13 years older than the median ro-pax ship on this register, which was built in 2000 (483 vessels with a known build year). At 31,122 gross tonnage it is larger than 71% of the other 470 ro-pax ships with a recorded tonnage. It is one of 84 ro-pax ships here under the Italy flag, 17.0% of the 493 on the register. The same builder is recorded for 4 other vessels here, 2 of them ro-pax ships. Grandi Navi Veloci is linked to 8 vessels on this register. Its MRV returns name it OSCAR WILDE for 2018 and GNV ALLEGRA for 2019–2025. The reported port of registry changed: Nassau (2018), then Genoa (2019–2025).
Its 26,728 t of CO₂ for 2025 is 11% below the median of 30,062 t among the 417 ro-pax ships on this register that reported for 2025. Per nautical mile it emitted 578.5 kg CO₂, 24% above the type median of 467.6 kg. It logged 2,829 hours at sea against a median of 4,243 hours for its type that year. 19.6% of its 2025 emissions were at berth; the median for ro-pax ships was 6.7%. Across 8 years with reported emissions, the highest was 2018 (48,389 t) and the lowest 2020 (16,035 t). Of the 2 sister ships listed below with a 2025 return, 2 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 | 26,728 | 8,470 | — | 2,829 | 5,237 | 578.5 | — | — |
| 2024 | 29,628 | 9,417 | — | 3,115 | 4,919 | 568.7 | — | — |
| 2023 | 38,095 | 12,146 | — | 3,849 | 3,754 | 561.1 | — | — |
| 2022 | 34,425 | 10,966 | — | 3,516 | 4,192 | 561.3 | — | — |
| 2021 | 16,121 | 5,098 | — | 1,726 | 898 | 522.0 | — | — |
| 2020 | 16,035 | 5,111 | — | 1,682 | 1,831 | 535.5 | — | — |
| 2019 | 29,131 | 9,307 | — | 2,703 | 3,575 | 613.1 | — | — |
| 2018 | 48,389 | 15,344 | — | 5,611 | 4,351 | 531.5 | — | — |
Vessel particulars
- IMO number
- 8506311
- Previously reported as
- OSCAR WILDE
- Ship type
- Ro-pax ship
- Gross tonnage
- 31,122
- Length overall
- 166.3 m
- Year built
- 1987
- Flag state
- Italy per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Norway. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- Wärtsilä Marine
- Port of registry
- Genoa MRV 2025
- Ice class
- IB
- Technical efficiency (design)
- EIV (30.9 gCO₂/t·nm)
- Operator
- Grandi Navi Veloci
- Verifier
- RINA Services Spa, Italy
- Accreditation
- 002O
- Compliance document issued
- 2026-03-02
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 44.8% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 9.8% and CO₂ per nautical mile rose 1.7%.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
- 27,144 t
- Methane (CH₄)
- 0.42 t
- Nitrous oxide (N₂O)
- 1.52 t
- Under EU ETS
- 20,742 t, 78% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2019 | RINA Services Spa | Italy |
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.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 8 MRV reporting years, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, 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.