A semisubmersible wind turbine platform capable of floating on a body of water and supporting a wind turbine over a vertical center column includes a vertical center column and three or more vertical outer columns spaced radially from the center column, each of the outer columns being connected to the center column with one or more of bottom beams, top beams, and struts, with the major structural components being made of concrete and having sufficient buoyancy to support a wind turbine tower.