Follow up : - This is the standard steering method, which includes steering angle feedback to the helm. This can be operated manually or automatically. The ship's heading can be programmed into the autopilot, which can then compare it to the desired heading and adjust the rudder angle accordingly. Non Follow Up- Normally used only for backup purposes. Each steering gear unit has a single lever; by moving the lever in one direction, the rudder begins to turn; the rudder continues to turn until the lever is released or it reaches the limit of its operation.