Patent ID: 11885298
Assignee: ITREC B.V.
Field: Handling (Mechanical engineering)
Classification: CPC F  B  E  Y | IPC B  E  F

Claim 17:
18. A method for installation of a pile adapted to support an offshore wind turbine, using the vessel according to claim 1, the method comprising the following steps:
transporting a pile in a horizontal orientation to an offshore installation site;
positioning the pile in a pile holder on the wind turbine installation vessel, wherein the pile holder engages with a circumference of the pile at a lower side thereof to hold the pile in order to limit movement of the lower end of the pile in a direction perpendicular to a longitudinal axis of the pile, and wherein the pile holder engages the lower end of the pile in order to limit movement of the pile in a direction parallel to the longitudinal axis of the pile;
lifting an upper end portion of the pile, thereby rotating the pile from a horizontal orientation to a vertical orientation about a substantially horizontal rotation axis; and
lowering the pile into the water while guided by the upending cradle of the pile holder,
wherein the step of lifting is performed by the computerized crane control system.