Type P: Electro-hydraulic Steering Systems


The Type P Electrohydraulic Steering System was designed by Paul Wagner, whose father, William Wagner, pioneered the original concepts and is superior in design, operation, and reliability. A pair of double acting cylinders coupled to one or more tillers develop the torque necessary to move the ship's rudder. Engine-driven or electrically-driven pumpsets provide the hydraulic flow and pressure to move the rudder and hold it against rudder loads. A range of control systems generate the steering commands and monitor the system operation; thus, a complete system, from bridge to rudder, is provided with: 


  • Double-acting steering cylinders with self-aligning bearings ensuring balanced rudder torque, minimum installation alignment and resistance to wear or damage caused by hull distortion.

  • Continued steering in case of single fault failure.

  • Better strength, easier servicing and greater resistance to corrosion due to elimination of cylinder tie rods.

  • Integral and adjustable rudder stops to withstand rudder overloads in excess of Rules requirements. Balanced stopping forces minimize undue rudder stock side loads, and possible overload damage. No need for expensive, less effective shipyard designed and manufactured stops. (4 TM and larger.)

  • Reduced wear and friction and improved efficiency as all metal to-metal contact is eliminated. Designs include oversized bearings for long life.


William Wagner invented the world's first manual hydraulic steering system for small vessels in 1936. Since then, he and son Paul have developed a wide range of larger electrohydraulic steering systems which have been successfully installed on many types and sizes of vessels worldwide. 


The latest and most sophisticated designs reflect decades of experience, refinements and improvements. The results are well proven, robust, and highly efficient steering systems – which some say are the best in the industry.  


Competitively priced, every AutoNav steering system is built and tested for severe service to ensure you performance perfection. 


Self lubricated Combination Radial, Carrier Bearing and Packing Gland. Can be integrated into the steering tiller for a compact and maintenance free installation.