General cargo ship · Portugal flag · built 2015
SIDER ONDA: CO₂ emissions 2018–2025
IMO 9700316 EU ETS8 reporting years
- CO₂ reported 2025
- 5,011 t
- Fuel burned
- 1,571 t
- Distance
- 16,361 nm
- Time at sea
- 1,822 h
- Emitted at berth
- 36% of total
- Share of year under way
- 21%
- Gross tonnage
- 23,856
SIDER ONDA against its type
Built in 2015, it is 8 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 23,856 gross tonnage it is larger than 90% 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 10 other vessels here, 3 of them general cargo ships. Its MRV returns name it VANESSA OLDENDORFF for 2018–2019 and SIDER ONDA for 2020–2025. The reported port of registry changed: Majuro (2020–2022), then MADEIRA (2023–2025).
Its 5,011 t of CO₂ for 2025 is 1.8 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 306.3 kg CO₂, 2.5 times the type median of 122.2 kg. It logged 1,822 hours at sea against a median of 3,044 hours for its type that year. 35.5% of its 2025 emissions were at berth; the median for general cargo ships was 4.3%. Across 8 years with reported emissions, the highest was 2022 (10,501 t) and the lowest 2019 (4,455 t). Its efficiency percentile within the type went from 69 in 2018 to 12 in 2025 (lower is more efficient). The one sister ship listed below with a 2025 return reported a lower CO₂ per nautical mile.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 5,011 | 1,571 | 16,361 | 1,822 | 1,779 | 306.3 | 16.2 | 12 |
| 2024 | 6,771 | 2,150 | — | 2,503 | 1,057 | 265.3 | — | — |
| 2023 | 9,419 | 3,005 | — | 3,586 | 843 | 231.8 | — | — |
| 2022 | 10,501 | 3,354 | 45,749 | 3,942 | 1,058 | 229.5 | 10.9 | 74 |
| 2021 | 6,197 | 1,980 | 29,199 | 2,839 | 704 | 212.2 | 9.6 | 65 |
| 2020 | 6,790 | 2,171 | 33,926 | 4,149 | 468 | 200.1 | 9.0 | 62 |
| 2019 | 4,455 | 1,424 | 22,476 | 2,009 | 133 | 198.2 | 9.4 | 65 |
| 2018 | 4,808 | 1,531 | 21,513 | 2,073 | 198 | 223.5 | 9.9 | 69 |
Vessel particulars
- IMO number
- 9700316
- Previously reported as
- VANESSA OLDENDORFF
- Ship type
- General cargo ship
- Gross tonnage
- 23,856
- Length overall
- 183.0 m
- Year built
- 2015
- Flag state
- Portugal per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Marshall Islands. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- Naikai Zosen Corporation
- Port of registry
- MADEIRA MRV 2025
- Technical efficiency (design)
- EEXI (5.59 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-12
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 57 of 479 qualifying general cargo ships by EEOI, at the 12th percentile. The dashed line is the type median, 29.4; this vessel reported 16.2.
EEOI divides emissions by transport work, which for this vessel and year was 309,137,569 tonne-miles over 16,361 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 4.2% higher than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 26.0% and CO₂ per nautical mile rose 15.4%.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
- 5,088 t
- Methane (CH₄)
- 0.08 t
- Nitrous oxide (N₂O)
- 0.28 t
- Under EU ETS
- 5,011 t, 100% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | VERIFAVIA (UK) LTD | United Kingdom |
| 2019 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2020 | 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 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 8 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.