... ,BV,DNV,LR,GL,NK,RINA 4.Single,double rudder Standard Cylinder Hydraulic Boat Steering Gear1. Features and ApplicationStandard Hydraulic Steering ... further notice. Before you send inquiry, pls kindly tell us:1. What type of your ship/vessel, river or sea, or function ... u have complete information such as Torque, just send to us directly. Standard Cylinder Hydraulic Steering Gear for Ship/Boat