Other ship types (Offshore) · Norway flag · built 2016
RAMFORM TETHYS: CO₂ emissions 2025
IMO 9676888 EU ETS
- CO₂ reported 2025
- 20,698 t
- Fuel burned
- 6,643 t
- Time at sea
- 3,089 h
- Emitted at berth
- 1% of total
- Share of year under way
- 35%
- Gross tonnage
- 20,637
RAMFORM TETHYS against its type
Built in 2016, it is 5 years newer than the median offshore vessel on this register, which was built in 2011 (410 vessels with a known build year). At 20,637 gross tonnage it is larger than 93% of the other 396 offshore vessels with a recorded tonnage. It is one of 70 offshore vessels here under the Norway flag, 16.9% of the 413 on the register. The same builder is recorded for 38 other vessels here, 4 of them offshore vessels.
Its 20,698 t of CO₂ for 2025 is 5.1 times the median of 4,049 t among the 390 offshore vessels on this register that reported for 2025. Per nautical mile it emitted 1,257.5 kg CO₂, 3.6 times the type median of 348.3 kg. It logged 3,089 hours at sea against a median of 3,550 hours for its type that year. 1.2% of its 2025 emissions were at berth; the median for offshore vessels was 6.4%. Of the 2 sister ships listed below with a 2025 return, 2 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2025–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 20,698 | 6,643 | — | 3,089 | 247 | 1,257.5 | — | — |
Vessel particulars
- IMO number
- 9676888
- Ship type
- Other ship types (Offshore)
- Gross tonnage
- 20,637
- Length overall
- 104.2 m
- Beam
- 70.0 m
- Year built
- 2016
- Flag state
- Norway per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Bahamas. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- Oslo MRV 2025
- Home port
- Oslo
- Ice class
- IC
- Verifier
- Bureau Veritas Certification France, France
- Accreditation
- 3-2047 rev. 4
- Compliance document issued
- 2026-04-08
- Compliance document expires
- 2027-06-30
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 21,024 t
- Methane (CH₄)
- 0.33 t
- Nitrous oxide (N₂O)
- 1.20 t
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2025–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 1 MRV reporting year and 5 of 5 vessel particulars. Not found in the sources for this vessel: an efficiency ranking, AIS movements in Norwegian waters, a name history, 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.