With the continuous breakthroughs in global shipbuilding tonnage, the weights of the stern rudder have increased accordingly. The traditional installation method of mechanical manual hoisting cannot meet the production needs. Therefore, the new installation method is the top choice. It not only reduces the work intensity, improves and ensures the installation quality, but also enhances the efficiency of the installation process, shortens the shipbuilding cycle, and significantly improves economic benefits. The platform is specifically designed for the precise X,Y and Z directions adjustment and positioning. 3 load capacities:120 tons, 260 tons and 400 tons, and can be customized according to the needs of shipyards.