A method of constructing and assembling a floating wind turbine platform comprising: constructing pre-stressed concrete sections of a floating wind turbine platform base on shore; assembling the floating wind turbine platform base sections to form the base configured to move on a system of rails at a first location in an on shore floating wind turbine platform assembly area wherein the rails extend between the first, a second, a third, a fourth and a fifth location in the floating wind turbine platform assembly area (Al); moving the floating wind turbine platform base to the second location in the floating wind turbine platform assembly area (Al); constructing pre-stressed concrete sections of floating wind turbine platform columns (78, 80); assembling the column sections to form a center column and a plurality of outer columns on the base to define a hull at the second location in the floating wind turbine platform assembly area (Al); moving the hull to a third location in the floating wind turbine platform assembly area (Al); mounting secondary structures (30, 32, 32a, 33) on and within the hull; moving the hull to a fourth location in the floating wind turbine platform assembly area (Al); constructing a wind turbine tower on the center column; mounting a wind turbine on the wind turbine tower, thus defining the floating wind turbine platform; moving the floating wind turbine platform to a launch platform in the fifth location, wherein the fifth location includes a dock having two finger piers extending therefrom into the body of water, and wherein the finger piers include a system of rails thereon; moving the floating wind turbine platform on the rails in the fifth location onto the rails of the finger piers such that a portion of the base is supported on the finger piers above a surface of the body water and a portion of the base is supported on the dock; moving a launch barge between the finger piers and underneath the floating wind turbine platform supported on the finger piers; removing ballast from the launch barge until the launch barge lifts the floating wind turbine platform off of the finger piers and the dock, thereby transferring the floating wind turbine platform onto the launch barge; towing the launch barge to a launch area in the body of water; lowering one end of the launch barge; and sliding the floating wind turbine platform off of the launch barge into the body of water. constructing pre-stressed concrete sections of a floating wind turbine platform base on shore; assembling the floating wind turbine platform base sections to form the base configured to move on a system of rails at a first location in an on shore floating wind turbine platform assembly area wherein the rails extend between the first, a second, a third, a fourth and a fifth location in the floating wind turbine platform assembly area (Al); moving the floating wind turbine platform base to the second location in the floating wind turbine platform assembly area (Al); constructing pre-stressed concrete sections of floating wind turbine platform columns (78, 80); assembling the column sections to form a center column and a plurality of outer columns on the base to define a hull at the second location in the floating wind turbine platform assembly area (Al); moving the hull to a third location in the floating wind turbine platform assembly area (Al); mounting secondary structures (30, 32, 32a, 33) on and within the hull; moving the hull to a fourth location in the floating wind turbine platform assembly area (Al); constructing a wind turbine tower on the center column; mounting a wind turbine on the wind turbine tower, thus defining the floating wind turbine platform; moving the floating wind turbine platform to a launch platform in the fifth location, wherein the fifth location includes a dock having two finger piers extending therefrom into the body of water, and wherein the finger piers include a system of rails thereon; moving the floating wind turbine platform on the rails in the fifth location onto the rails of the finger piers such that a portion of the base is supported on the finger piers above a surface of the body water and a portion of the base is supported on the dock; moving a launch barge between the finger piers and underneath the floating wind turbine platform supported on the finger piers; removing ballast from the launch barge until the launch barge lifts the floating wind turbine platform off of the finger piers and the dock, thereby transferring the floating wind turbine platform onto the launch barge; towing the launch barge to a launch area in the body of water; lowering one end of the launch barge; and sliding the floating wind turbine platform off of the launch barge into the body of water.