Seaway Offshore Cables was awarded the contract for the transport and installation (T&I) as well as related termination, testing and commissioning works related to the inner array grid cable system of the Hollandse Kust Zuid 1-4 offshore wind farm project by Vattenfall.
The Hollandse Kust Zuid (HKZ) 1-4 offshore wind farm is located between 18-36 km off the Dutch west coast within the North Sea. The OWF consists of 140 wind turbine generators, each with a capacity of up to 11.0 MW and is based on an inner array grid of 140 medium voltage aluminium core submarine composite cables with a total length of up to 322km.
The submarine composite cables are to be manufactured and supplied by Twentsche Kabelfabriek (part of TKH Group) and Prysmian PowerLink (part of Prysmian Group) and are subsequently to be installed by Seaway Offshore Cables utilising dedicated in-house resources such as the Cable Lay Vessel Seaway Aimery and Installation Support Vessel Seaway Moxie.
140 Wind Turbine Generators
1,500 MW Installed Capacity
2 Offshore Substations (OSS)
322 KM of Submarine Cables
We look forward to working collaboratively with Vattenfall as a trusted partner to install the foundations and inner array cables for the Hollandse Kust Zuid 1-4 wind farms and help to deliver the first subsidy-free offshore wind project in the Netherlands."
|Client:||Vattenfall Hollandse Kust Zuid 1&2, NL
Vattenfall Hollandse Kust Zuid 3&4, NL
|Location:||North Sea, Dutch Sector|
|Water Depth:||Up to 27 m|
|Scope:||Supply of cable protection systems
Supply of subsea crossing materials
Pre-lay grapnel run and route clearance
Cable installation, termination, testing and pre-commissioning
|Type of Cables:||3-core submarine composite cable|
|Voltage Level:||66 kV|
|No. of Cables:||140|
|Length of Cables:||322 km|
|WTG’s:||140 x 11.0 MW, Siemens Gamesa Renewable Energy|
|Total Capacity:||1,500 MW|
|Schedule:||One (1) continuous campaign in 2022 and 2023|
|Vessels:||CLV Seaway Aimery
ISV Seaway Moxie