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Evolution of a Modern Naval Steering System

Please see attached article by authors Paul Wagner and Jeannine A. Vail as published in the Naval Engineers journal. CLICK HERE ​ ABSTRACT Ships' steering systems have progressed over the ages, driven by the need for more powerful and reliable systems. From simple mechanical devices thousands of years old to the latest electro-hydraulic systems, progress has been relatively slow but constant. Present systems tend to be the result of a series of modifications of older designs in response to a need for increased performance and reliability. This paper describes the historical development leading to present designs and discusses a new approach which not only eliminates most problems inherent in

60,000 Hours service of Rotary Vane Steering in Royal Canadian Naval Frigates

Port Moody, BC, Canada: The first generation of the Autonav Rotary Vane steering systems were put into service over 20 years ago in the RCN Halifax Class Frigates and since then have undergone over 60,000 hours of service with minimal maintenance. On recently inspecting one of these early systems the seals and bearings were confirmed to have zero measurable wear due to the unique bearing and seal design. While rotary vane steering actuators are much more compact and lower weight than traditional Ram systems, their internal sealing has frequently been a problem which caused rudder drift under load. In addition the internal bearings would score and wear, requiring expensive and troublesome re