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How rudder movement is confined within port and starboard stops?

Rudder movement is confined within port and starboard stops by various limit switches and mechanical stops to keep rudder between 35o port and 35o starboard.
1. Bridge tele motor transmitter mechanical stop (rack travel limited).
2. Auto pilot mechanical stop.

3. Local control mechanical stop.
4. Actuating mechanism mechanical stops (limit on ram travel).
5. Stern-post mechanical stop
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