Ro-ro ship · Netherlands flag · built 2019
LONGSTONE: CO₂ emissions 2019–2025
IMO 9848479 EU ETS7 reporting years
- CO₂ reported 2025
- 28,064 t
- Fuel burned
- 8,989 t
- Distance
- 67,800 nm
- Time at sea
- 4,500 h
- Emitted at berth
- 4% of total
- Share of year under way
- 51%
- Gross tonnage
- 32,770
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LONGSTONE against its type
Built in 2019, it is 17 years newer than the median ro-ro ship on this register, which was built in 2002 (281 vessels with a known build year). At 32,770 gross tonnage it is larger than 81% of the other 269 ro-ro ships with a recorded tonnage. It is one of 9 ro-ro ships here under the Netherlands flag, 2.9% of the 311 on the register. The same builder is recorded for 59 other vessels here, 45 of them ro-ro ships. Its MRV returns name it MARIA GRAZIA ONORATO for 2019–2023 and LONGSTONE for 2024–2025. The reported port of registry changed: VALLETTA (2024), then Rotterdam (2025).
Its 28,064 t of CO₂ for 2025 is 31% above the median of 21,362 t among the 238 ro-ro ships on this register that reported for 2025. Per nautical mile it emitted 413.9 kg CO₂, 27% above the type median of 327.0 kg. It logged 4,500 hours at sea against a median of 4,872 hours for its type that year. 3.6% of its 2025 emissions were at berth; the median for ro-ro ships was 4.3%. Across 7 years with reported emissions, the highest was 2020 (36,824 t) and the lowest 2024 (25,469 t). Its efficiency percentile within the type went from 86 in 2019 to 62 in 2025 (lower is more efficient). Of the 6 sister ships listed below with a 2025 return, 5 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 | 28,064 | 8,989 | 67,800 | 4,500 | 1,015 | 413.9 | 98.5 | 62 |
| 2024 | 25,469 | 8,152 | 57,339 | 3,934 | 2,031 | 444.2 | 96.8 | 58 |
| 2023 | 30,841 | 9,877 | 68,196 | 4,687 | 1,303 | 452.2 | 122.9 | 66 |
| 2022 | 28,938 | 9,271 | 66,692 | 4,668 | 1,539 | 433.9 | 87.1 | 51 |
| 2021 | 34,627 | 11,097 | 70,586 | 4,546 | 1,905 | 490.6 | 118.4 | 67 |
| 2020 | 36,824 | 11,805 | 76,222 | 4,892 | 1,745 | 483.1 | 204.5 | 88 |
| 2019 | 26,739 | 8,575 | 59,501 | 3,544 | 989 | 449.4 | 173.0 | 86 |
Vessel particulars
- IMO number
- 9848479
- Previously reported as
- MARIA GRAZIA ONORATO
- Ship type
- Ro-ro ship
- Gross tonnage
- 32,770
- Length overall
- 209.7 m
- Beam
- 26.0 m
- Year built
- 2019
- Flag state
- Netherlands per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Italy. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- Rotterdam MRV 2025
- Technical efficiency (design)
- EEXI (11.9 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-11
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 120 of 192 qualifying ro-ro ships by EEOI, at the 62nd percentile. The dashed line is the type median, 85.3; this vessel reported 98.5.
EEOI divides emissions by transport work, which for this vessel and year was 285,004,468 tonne-miles over 67,800 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 5.0% higher than in 2019, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 10.2% while distance sailed rose 18.2%and CO₂ per nautical mile fell 6.8%.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
- 28,506 t
- Methane (CH₄)
- 0.45 t
- Nitrous oxide (N₂O)
- 1.62 t
- Under EU ETS
- 14,543 t, 52% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2019 | RINA Services Spa | Italy |
| 2024 | DNV | Germany |
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.