Series YOCQH1000 engineering marine application hudraulic gear box has the advantages like starting with load, overload protection, isolating torsional vibration, impact reducing, stepless speed governing, rapid clutch stablized etc. this series product can replace the traditional engineering marine application hudraulic gear box completely and improve the transmission quality of engineering marine application power unit to resolve the defect exist in the traditional devices. So it is an ideal power transmission device for engineering marine power set. with high performance data, good reliability and easy for maintenance advantages, this kind of product has got very good reputation from the customers