... BV,DNV,LR,GL,NK,RINA 4.Single,double rudder Improved Hydraulic Steering Gear System1. Features and ApplicationImproved Hydraulic Steering ... 5 degree sway fore-and-aft 7.5 degree.Improved Hydraulic Steering Gear fully comply with the regulations and ... :4. Rudder Propelling Setup Configuration and I nstallation Dimension:Improved Hydraulic Steering Gear rudder propelling setup has double cylinder single ...