Decommissioning

With two large and versatile self-propelled jack-up vessels, combined with experienced operations, project management and engineering teams – Fred. Olsen Windcarrier is the ideal partner for many Southern North Sea decommissioning projects.

Though designed with offshore wind in mind, the company is built on more than 165 years of offshore, marine and shipping heritage and has vast experience operating in the oil and gas industry. Related companies Fred. Olsen EnergyHarland and Wolff and Dolphin Drilling remain key players in the oil and gas sector.

The flexibility of the spacious 3200m2 decks on Brave Tern and Bold Tern, coupled with the 800 tonne wrap-around-the-leg cranes mean that our vessels can provide a safe and stable platform for decommissioning operations such as well plug and abandonment (P&A).

The vessels have robust and highly efficient continuous hydraulic jacking systems, with legs suitable for water depths up to 45m with the survival gap (plus possible extensions). With a transit speed of 12 knots, DP2 and Voith Schneider propulsion systems, efficient and accurate positioning is easily achieved.

The vessels also provide safe and comfortable accommodation for up to 80 persons, in 56 cabins, and have helidecks for transfers.

  • Crane support up to 800 tonnes
  • Large open deck area 3200m2
  • Deck load capacity of 6600 tonnes
  • Accommodation for up to 80 persons, in 56 cabins
  • 24/7 operations
  • Helidecks for transfers
  • Transit speed of 12 knots
  • DP2 positioning
  • Voith Schneider propulsion