FLOATING SUPPORT STRUCTURE WITH A STABLE VERTICAL FLOATING POSITION FOR CONNECTION TO A HORIZONTALLY POSITIONED TOWER OF A WIND TURBINE

The invention describes a floating support structure (1) for connection to a tower (101) of a wind turbine (100) without using a crane for mounting the tower (101). The support structure (1) comprises a first and second pivot line buoyancy unit (3, 5 4) having a pivot line (2) between them and a top buoyancy unit (5), wherein the top buoyancy unit (5) is positioned in a top corner of an isosceles triangle (T) with equal sides extending from the top buoyancy unit (5) to each of the first and second pivot line buoyancy unit (3, 4) and the support structure flange (15) is positioned on the lower half of a perpendicular line (H) from the top corner. The inventive support structure (1) have a stable vertical floating position with the first and second pivot line buoyancy units (3, 4) floating in a body of water and the top buoyance unit (21) vertically above them.