Ulstein Maintenance / Service Agreement
ULSTEIN SX222 CSOV Design for Offshore Wind
Ulstein SX222 construction service operation vessel (CSOV) for offshore wind with TWIN X-STERN, hybrid battery propulsion up to 20 MWh, methanol readiness, 500 m² deck and accommodation for 126.
Description
The ULSTEIN SX222 is a construction service operation vessel (CSOV) design for offshore wind farm development and maintenance, supporting walk-to-work operations, crew transfer, maintenance and cable installation. Motion compensation and walk-to-work systems enable transfers to offshore structures.
Key features
- TWIN X-STERN®: azimuth propellers at both ends for operation in either direction, strong station-keeping, fuel savings and quieter operation
- Hybrid battery propulsion with up to 20 MWh battery capacity, allowing around 18 hours infield operation with offshore charging available
- Methanol fuel readiness and energy source flexibility
- Accommodation for up to 126 people
- 500 m² unobstructed deck area with optimised logistics flow
The vessel can be built at Ulstein Verft in Norway or at Ulstein partner yards.
References
- Olympic Boreas (2024) and Olympic Notos (2024), Olympic
- WINDEA Curie (2025), WINDEA Clausius (2025), Windea Carnot (2026), Windea Clarke (2026)
Specifications
| Name | Yard Number | Built | Owner |
|---|---|---|---|
| Olympic Boreas | 318 | 2024 | Olympic |
| Olympic Notos | 319 | 2024 | Olympic |
| WINDEA Curie | 320 | 2025 | Koios Vermoegensverwaltungs GmbH & Co. Kg |
| WINDEA Clausius | 321 | 2025 | Philotes Vermoegensverwaltungs GmbH & Co.KG |
| Windea Carnot | 322 | 2026 | Epimetheus GMBH & CO. KG |
| Windea Clarke | 323 | 2026 |
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