General cargo ship · Italy flag · built 2008
SIDER SONJA: CO₂ emissions 2018–2025
IMO 9432505 EU ETS8 reporting years
- CO₂ reported 2025
- 4,087 t
- Fuel burned
- 1,287 t
- Time at sea
- 3,201 h
- Emitted at berth
- 12% of total
- Share of year under way
- 37%
- Gross tonnage
- 5,629
SIDER SONJA against its type
Built in 2008, it is 1 year newer than the median general cargo ship on this register, which was built in 2007 (2,852 vessels with a known build year). At 5,629 gross tonnage it is smaller than 56% of the other 2,665 general cargo ships with a recorded tonnage. It is one of 18 general cargo ships here under the Italy flag, 0.6% of the 3,081 on the register. The same builder is recorded for 127 other vessels here, 52 of them general cargo ships. Reederei Wessels is linked to 4 vessels on this register. Its MRV returns name it WES SONJA for 2018 and SIDER SONJA for 2019–2025. The reported port of registry changed: Saint John's (2018), then MADEIRA (2019–2020), then NAPOLI (2021–2025).
Its 4,087 t of CO₂ for 2025 is 45% above 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 139.9 kg CO₂, 14% above the type median of 122.2 kg. It logged 3,201 hours at sea against a median of 3,044 hours for its type that year. 11.6% 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 2018 (6,147 t) and the lowest 2025 (4,087 t). Its efficiency percentile within the type went from 55 in 2019 to 79 in 2024 (lower is more efficient). Of the 7 sister ships listed below with a 2025 return, 6 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 | 4,087 | 1,287 | — | 3,201 | 475 | 139.9 | — | — |
| 2024 | 4,916 | 1,568 | 33,709 | 3,424 | 845 | 145.8 | 36.4 | 79 |
| 2023 | 4,487 | 1,428 | 26,376 | 2,882 | 646 | 170.1 | 43.1 | 88 |
| 2022 | 5,110 | 1,614 | 29,195 | 3,899 | 892 | 175.0 | 40.4 | 82 |
| 2021 | 4,605 | 1,454 | 28,128 | 3,121 | 834 | 163.7 | 31.7 | 78 |
| 2020 | 4,617 | 1,457 | 32,291 | 3,605 | 643 | 143.0 | 33.9 | 76 |
| 2019 | 4,771 | 1,520 | 33,306 | 4,158 | 474 | 143.2 | 30.4 | 55 |
| 2018 | 6,147 | 1,955 | — | 6,400 | 304 | 141.4 | — | — |
Vessel particulars
- IMO number
- 9432505
- Previously reported as
- WES SONJA
- Ship type
- General cargo ship
- Gross tonnage
- 5,629
- Length overall
- 108.1 m
- Beam
- 18.5 m
- Year built
- 2008
- Flag state
- Italy 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. - Port of registry
- NAPOLI MRV 2025
- Technical efficiency (design)
- EIV (16.14 gCO₂/t·nm)
- Operator
- Reederei Wessels
- Verifier
- RINA Services Spa, Italy
- Accreditation
- 002O
- Compliance document issued
- 2026-03-16
- Compliance document expires
- 2027-06-30
Efficiency against its own type2024
Position 255 of 321 qualifying general cargo ships by EEOI, at the 79th percentile. The dashed line is the type median, 23.6; this vessel reported 36.4.
Across the 3 ranked vessels operated by Reederei Wessels, the median percentile is 80. This vessel is more efficient than its own fleet median.
EEOI divides emissions by transport work, which for this vessel and year was 135,178,169 tonne-miles over 33,709 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 33.5% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 16.9% and CO₂ per nautical mile fell 4.1%.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
- 4,151 t
- Methane (CH₄)
- 0.06 t
- Nitrous oxide (N₂O)
- 0.23 t
- Under EU ETS
- 3,225 t, 79% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | DNV | Germany |
| 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).
This page draws on 8 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars and a name history. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.