SPHMT * for shipyard(self-propelling heavy-duty hydraulic flat truck) is the main transportation equipment for the large pieces such as hull section and marine main engine inside the shipyard. Propelling system of hull transporting vehicle adopts static pressure driving, the systme is composed by DA variable pump, hydrauic moter, control valve, sensor and electric control elements; suspension system is hydraulic suspension, with three-point support or four-point support and horizontal lifting or drop. Turing sytem is the independent turining, driven by oil cylinder and controlled by microcomputer, which can realize the play turning, entral turning, skewed moving around the angleаand other truning modes. Product design of our company is based on the principle of standardization, generalization, serialization, energy saving and environmental protection. Technical level and comprehensive performance of entire vehicle have both reached the advanced level domestically. Because of the lifting function of cargo platform of the vehicle, it can realize the effect of lifting machinery; the independent turning function can make the vehicle realize any turning at any angle and greatly improve its flexibility