A Rudder Angle Indicator is a device that can be either electromechanical or electrical and displays the rudder angle of the ship. Rudder Angle Indicators operate in real time, They display the rudder s position in degrees relative a zero state which means the rudder is in position to steer the ship straight forward. The Rudder Angle Indicator enables the reading of Rudder s deviation. The device consists of a transmitter and several receivers situated on various places of the ship. Different types of receivers can be connected to the same receiver.