A method of assembling a floating wind turbine platform comprising: forming a base assembly of the floating wind turbine platform in one of a cofferdam and a graving dock built in water having a first depth, the base assembly including: a keystone and a plurality of buoyant bottom beams extending radially outward of the keystone, wherein longitudinal axes of each of the plurality of bottom beams are coplanar; a center column arranged on the keystone; and a plurality of outer columns arranged at an end of each bottom beam; wherein the keystone is formed from at least one section, and the bottom beams, the center column, and the outer columns are each formed from at least two sections; the method being characterized by the following steps: moving keystone sections defining legs of the keystone to an interior of a graving dock; moving beam sections defining portions of the bottom beams to the interior of the graving dock; assembling the keystone sections to define the keystone; assembling the beam sections to the keystone to define the bottom beams; post-tensioning the keystone and each bottom beam along its longitudinal axis to define a base assembly; moving center column sections and outer column sections defining portions of the center column and a plurality of the outer columns, respectively, to the interior of the graving dock; assembling the center column sections onto the keystone to define the center column; assembling the outer column sections at the end of each bottom beam to define the outer columns; post-tensioning the center column to the keystone along its longitudinal axis; post-tensioning each outer column to the bottom beam upon which it has been assembled along its longitudinal axis; connecting a radial support beam defining a top member between the center column and each of the outer columns to define a foundation; assembling tower sections on the center column to define a tower; and assembling a wind turbine on the tower to define a complete floating wind turbine platform. forming a base assembly of the floating wind turbine platform in one of a cofferdam and a graving dock built in water having a first depth, the base assembly including: a keystone and a plurality of buoyant bottom beams extending radially outward of the keystone, wherein longitudinal axes of each of the plurality of bottom beams are coplanar; a center column arranged on the keystone; and a plurality of outer columns arranged at an end of each bottom beam; a keystone and a plurality of buoyant bottom beams extending radially outward of the keystone, wherein longitudinal axes of each of the plurality of bottom beams are coplanar; a center column arranged on the keystone; and a plurality of outer columns arranged at an end of each bottom beam; wherein the keystone is formed from at least one section, and the bottom beams, the center column, and the outer columns are each formed from at least two sections; the method being characterized by the following steps: moving keystone sections defining legs of the keystone to an interior of a graving dock; moving beam sections defining portions of the bottom beams to the interior of the graving dock; assembling the keystone sections to define the keystone; assembling the beam sections to the keystone to define the bottom beams; post-tensioning the keystone and each bottom beam along its longitudinal axis to define a base assembly; moving center column sections and outer column sections defining portions of the center column and a plurality of the outer columns, respectively, to the interior of the graving dock; assembling the center column sections onto the keystone to define the center column; assembling the outer column sections at the end of each bottom beam to define the outer columns; post-tensioning the center column to the keystone along its longitudinal axis; post-tensioning each outer column to the bottom beam upon which it has been assembled along its longitudinal axis; connecting a radial support beam defining a top member between the center column and each of the outer columns to define a foundation; assembling tower sections on the center column to define a tower; and assembling a wind turbine on the tower to define a complete floating wind turbine platform. moving keystone sections defining legs of the keystone to an interior of a graving dock; moving beam sections defining portions of the bottom beams to the interior of the graving dock; assembling the keystone sections to define the keystone; assembling the beam sections to the keystone to define the bottom beams; post-tensioning the keystone and each bottom beam along its longitudinal axis to define a base assembly; moving center column sections and outer column sections defining portions of the center column and a plurality of the outer columns, respectively, to the interior of the graving dock; assembling the center column sections onto the keystone to define the center column; assembling the outer column sections at the end of each bottom beam to define the outer columns; post-tensioning the center column to the keystone along its longitudinal axis; post-tensioning each outer column to the bottom beam upon which it has been assembled along its longitudinal axis; connecting a radial support beam defining a top member between the center column and each of the outer columns to define a foundation; assembling tower sections on the center column to define a tower; and assembling a wind turbine on the tower to define a complete floating wind turbine platform.