Other ship types (Offshore) · United Kingdom flag · built 1991
C.S. SOVEREIGN: CO₂ emissions 2024–2025
IMO 8918629 EU ETS2 reporting years
- CO₂ reported 2024
- 189 t
- Fuel burned
- 59 t
- Time at sea
- 38 h
- Emitted at berth
- 41% of total
- Share of year under way
- 0%
- Gross tonnage
- 11,242
C.S. SOVEREIGN against its type
Built in 1991, it is 20 years older than the median offshore vessel on this register, which was built in 2011 (410 vessels with a known build year). At 11,242 gross tonnage it is larger than 85% of the other 396 offshore vessels with a recorded tonnage. It is one of 38 offshore vessels here under the United Kingdom flag, 9.2% of the 413 on the register. The same builder is recorded for 22 other vessels here, one of them an offshore vessel. The returns for 2024–2025 all give Southampton as port of registry.
Its 189 t of CO₂ for 2024 is 94% below the median of 3,374 t among the 8 offshore vessels on this register that reported for 2024. Per nautical mile it emitted 474.5 kg CO₂, 3.6 times the type median of 131.2 kg. It logged 38 hours at sea against a median of 2,674 hours for its type that year. 40.9% of its 2024 emissions were at berth; the median for offshore vessels was 5.3%.
No EU/EEA voyages were reported for 2025: zero CO₂ and zero time at sea, left out of the trend and of any ranking.
Emissions by year2024–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | No EU/EEA voyages reported | |||||||
| 2024 | 189 | 59 | — | 38 | 77 | 474.5 | — | not ranked |
Vessel particulars
- IMO number
- 8918629
- Ship type
- Other ship types (Offshore)
- Gross tonnage
- 11,242
- Length overall
- 130.7 m
- Year built
- 1991
- Flag state
- United Kingdom per EU MRV 2025
- Builder
- Van der Giessen de Noord
- Port of registry
- Southampton MRV 2024
- Home port
- Portland
- Technical efficiency (design)
- Not Applicable (0 gCO₂/t·nm)
- Operator
- Global Marine Systems, Global Marine Systems
- Efficiency ranking
- Not ranked: distance below the floor (2024)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2025-10-29
- Compliance document expires
- 2026-06-30
Where the 2024 emissions occurred
Methane, nitrous oxide and EU ETS2024
- Total CO₂ equivalent
- 192 t
- Methane (CH₄)
- 0.00 t
- Nitrous oxide (N₂O)
- 0.01 t
Laden voyages2024
- CO₂ on laden voyages
- 112 t, 59% of total
- Fuel, laden
- 35 t
- CO₂ per nm, laden
- 280.3 kg
The rest of the 2024 total was emitted on ballast legs or at berth.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2024–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 2 MRV reporting years, 5 of 5 vessel particulars and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, 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.