A turbine of a power generating system includes a rotary shaft, blades, stoppers and elastic members. Each of the blades includes a connecting side and an active side opposite to the connecting side, and the blades are disposed on the rotary shaft at intervals by a predetermined distance, in which the blades are pivotally connected to the rotary shaft through the connecting sides. The stoppers respectively correspond to the blades and are disposed over the rotary shaft for limiting expansion angles of the blades. Each of the elastic members includes a fixed end and a moving end opposite to the fixed end, and the fixed ends attach to the rotary shaft, and the moving ends respectively attach to the blades. Each of the blades pivots between an expanded position and a closed position.

An apparatus for generating offshore wind employs shallow draft floats supporting a lattice tower with a wide base having a single-line anchoring providing passive yawing. The lattice structure supports a horizontal shaft at both ends of the shaft for rotating a rotor assembly. Mechanical energy from the rotor may be transferred to electrical generation equipment located at the base of the structure.