General cargo ship · Portugal flag · built 2002
ONEGO MERCHANT: CO₂ emissions 2018–2025
IMO 9238363 EU ETS8 reporting years
- CO₂ reported 2025
- 5,409 t
- Fuel burned
- 1,723 t
- Distance
- 42,769 nm
- Time at sea
- 3,688 h
- Emitted at berth
- 2% of total
- Share of year under way
- 42%
- Gross tonnage
- 6,301
ONEGO MERCHANT against its type
Built in 2002, it is 5 years older than the median general cargo ship on this register, which was built in 2007 (2,852 vessels with a known build year). At 6,301 gross tonnage it is smaller than 51% 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 52 other vessels here, 36 of them general cargo ships. The returns for 2018–2025 all give Madeira as port of registry.
Its 5,409 t of CO₂ for 2025 is 1.9 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 126.5 kg CO₂, close to the type median of 122.2 kg. It logged 3,688 hours at sea against a median of 3,044 hours for its type that year. 2.0% 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 (5,566 t) and the lowest 2019 (2,757 t). Its efficiency percentile within the type went from 45 in 2022 to 24 in 2025 (lower is more efficient). Of the 7 sister ships listed below with a 2025 return, 4 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 | 5,409 | 1,723 | 42,769 | 3,688 | 111 | 126.5 | 22.2 | 24 |
| 2024 | 3,934 | 1,256 | 32,886 | 2,581 | 147 | 119.6 | 19.4 | 33 |
| 2023 | 4,923 | 1,554 | 40,113 | 3,585 | 85 | 122.7 | 18.8 | 43 |
| 2022 | 5,566 | 1,773 | 46,060 | 4,038 | 274 | 120.8 | 21.7 | 45 |
| 2021 | 3,949 | 1,260 | — | 2,523 | 43 | 138.7 | — | — |
| 2020 | 5,155 | 1,641 | — | 3,099 | 118 | 156.0 | — | — |
| 2019 | 2,757 | 879 | — | 1,728 | 19 | 149.6 | — | — |
| 2018 | 5,442 | 1,733 | — | 4,128 | 145 | 132.8 | — | — |
Vessel particulars
- IMO number
- 9238363
- Ship type
- General cargo ship
- Gross tonnage
- 6,301
- Length overall
- 132.2 m
- Year built
- 2002
- Flag state
- Portugal per EU MRV 2025
- Builder
- Volharding Shipyards
- Port of registry
- Madeira MRV 2025
- Technical efficiency (design)
- EIV (13.68 gCO₂/t·nm)
- Verifier
- EnvService GmbH, Germany
- Accreditation
- D-VS-20809-01-00
- Compliance document issued
- 2026-02-19
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 114 of 479 qualifying general cargo ships by EEOI, at the 24th percentile. The dashed line is the type median, 29.4; this vessel reported 22.2.
EEOI divides emissions by transport work, which for this vessel and year was 243,958,502 tonne-miles over 42,769 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 0.6% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 37.5% while distance sailed rose 30.1%and CO₂ per nautical mile rose 5.7%.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
- 5,493 t
- Methane (CH₄)
- 0.09 t
- Nitrous oxide (N₂O)
- 0.31 t
- Under EU ETS
- 3,082 t, 57% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | DNV | Germany |
| 2022 | EnvService GmbH | 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 and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, a name history, 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.