Anchoring system of offshore platform was taken as research object, mechanical and hydraulic systems of tension release winch were designed, the parameters of the main parts of winch were calculated and selected. Considering effects of cable storage winch, hydraulic motor rotation angle transfer function and torque transfer function of tension release winch were deduced,as well as the displacement and force characteristics of multiple winches in anchoring system. Using differential forward PID and MATLAB simulation, the influences of the cable storage winch on the hydraulic motor angle, torque control of the tension release device were analyzed,as well as the force and displacement output characteristic of multiple winches. The simulation results show that the storage winch only has a small impact on the step signal angle control and sine signal torque control of the tension release device, but the tension release device greatly reduces the impact of external forces on the storage winch.Master-slave switch of mooring winches at different stages can achieve position control of ships or submersibles.