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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 to traditional systems. 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 pump sets provide the hydraulic flow and pressure to move the rudder and hold it in place against rudder loads. A range of control systems generate the steering commands and monitor the system’s operation; providing, a complete system, from bridge to rudder, and includes:

  • Double-acting steering cylinders with self-aligning bearings ensure balanced rudder torque, minimal 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 with the 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. There is no need for expensive, less effective, shipyard-designed and manufactured stops. (4 TM and larger)

  • Reduce wear and friction and improve 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 his son Paul developed a wide range of larger electrohydraulic steering systems which have been installed and successfully used on many types and sizes of vessels worldwide.

The latest and most sophisticated designs reflect decades of experience, with continually added refinements and improvements. The results are a well-proven, robust, and highly efficient steering system—which is known as the best in the industry. 

Every Autonav steering system built is tested for severe service to ensure performance.  The systems are competitively priced and, over time, are an increasingly better choice since there are almost no further costs in maintenance or repairs. Designs comply with all International Classification Societies.

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