MODES OF STEERING
- Follow Up
- Non-Follow Up
Follow Up Mode
- This is the Principal mode of steering.
- In this mode, the rudder Follows the wheel. If the rudder is put 10° to Starboard, the rudder will follow to 10° to Stbd and remain there as long as wheel is kept to 10° to Stbd.
- To bring the rudder to ‘Midship’, the wheel will have to be brought to ‘Midship’.
- This mode is followed in the following methods of steering
- The hand steering mode in which the steering wheel sets the rudder angle,
- Auto-steering mode in which the wheel order is automatically generated depending upon the difference between the ordered course and the actual course
Non-Follow Up Mode
- This mode of steering is not done with a steering wheel but with a NFU Lever.
- The NFU lever does not have any markings. As long as it is kept pressed, the rudder will continue turning and stop the moment the lever is released.
- This mode is used when ships telemotor system fails. In that case, the NFU lever sends rudder setting directly to the Control Unit.
- To return the rudder to the midship, the NFU lever will have to be pressed to the opposite side of the initial movement and kept pressed till the rudder is amidship.