Function
Sea fastenings are used during the transport of heavy and costly components from the Construction port [I.7] to site.
What it costs*
Included in installation subcontract cost.
Who supplies them
Suppliers include ALE, Durham Sheet Metal, MC Construction, Semco Maritime and Temporary Works Design.
Key facts
Sea fastenings are typically designed and fabricated specifically for a project, although there is increasing interest in reusable sea fastenings that reduce cost of design and manufacture and shorten mobilisation time. Turbine component sea fastenings are well suited to this approach because the dimensions do not vary substantially for a particular turbine model.
Sea fastenings are typically welded steel structures that are welded to the vessel deck during mobilisation. They have locking devices to ensure safe transit and rapid release at the installation site.
What’s in it
- Monopile cradle
- Transition piece cradle
- Crane sea fastening