Vattenfall has issued a call for tenders for the provision of crew transfer vessels (CTVs) for its DanTysk and Sandbank offshore wind farms in Germany from next year and until 2025.
The tender has been divided into two lots, with Lot 1 seeking two CTVs to support scheduled maintenance two times per year from 2022 to 2025, while through Lot 2 the owner/operator is looking to enter into a four-year framework agreement for CTVs that would support additional operations on the two wind farms and, potentially, other projects in Germany.
Contracts under the first lot will be awarded to one or two vessel providers for two vessels in total for full term. One CTV is needed from 1 March 2022 for five months and one from 1 May 2022 for four months and then again around the same time each following year until 2025. Frist two years will be under a firm contract and the next two will be optional.
For the additional CTV services, Vattenfall is looking for up to five vessel providers or those with at least five CTVs in their fleet with a capability of supporting DanTysk and Sandbank with ad hoc charters. This could be potentially expanded to other wind farms located in German waters.
For ad hoc CTV services, to be contracted through a four-year framework agreement, preference will be given to vessel providers that are also bidding for Lot 1, but it is not a prerequisite.
The tender is open for applications until 18 August.
The 288 MW DanTysk offshore wind farm, located some 70 kilometres west of the island of Sylt, comprises 80 Siemens Gamesa 3.6 MW turbines that have been in operation since 2014.
Sandbank offshore wind farm has been in operation since 2017. The wind farm also has a 288 MW capacity and its 72 Siemens Gamesa 4 MW turbines are spinning some 90 kilometres west of Sylt.