SIEM OPAL
- IMO
- 9442419
- Type
- Other ship types (Offshore)
- Port of registry
- Kristiansand
ISM company (DoC holder) in 2025: SEA1 OFFSHORE AS
2025 at a glance
From the 2025 THETIS-MRV report.
Where the emissions happen, 2025
THETIS splits each ship's CO₂ by voyage type. The split sets how much falls under the EU ETS: all of it within the EU and at berth, half of it on voyages into or out of the EU.
- Between EU ports60%
- From the EU9%
- Into the EU26%
- At berth in the EU4%
73% of this ship's CO₂ falls under the EU ETS (6,404 t).
Every reporting year
One row per THETIS-MRV report. A ship that changed operator during a year has a part-year report for each.
Operation
| Year | ISM company | Fuel t | CO₂ t | Distance nm | At sea h | Speed kn | Fuel kg/nm | CO₂ g/t·nm | Laden fuel |
|---|---|---|---|---|---|---|---|---|---|
| 2025part-year | SEA1 OFFSHORE AS | 263 | 842 | 1,955 | 548 | 3.6 | 134.3 | – | – |
| 2025 | Aurora Offshore Management AS | 2,750 | 8,815 | 12,091 | 3,302 | 3.7 | 227.4 | – | – |
Benchmark and verification
| Year | ISM company | CO₂ per TW, g CO₂/t·nm | Offshore median | vs Offshore | Rank | Verifier | Methods |
|---|---|---|---|---|---|---|---|
| 2025part-year | SEA1 OFFSHORE AS | – | – | – | – | DNV | B |
| 2025 | Aurora Offshore Management AS | – | – | – | – | DNV | B+C |
Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Offshore ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·nm. CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's offshore ships. Methods: A delivery notes, B tank monitoring, C flow meters, D direct measurement. FuelEU GHG intensity is not shown: it needs fuel types, which the public file does not carry. Operators are named only from 2024, the first year the public files carry them; earlier years belong to the ship, not to any company.