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The officer of the watch
(3) The change-over from automatic to manual steering and vice versa shall be made by, or under the supervision of, the officer of the watch, or, if there is no such officer, the master.
When should the steering be changed from auto to manual on a ship?
The steering mode shall be changed over from ship's autopilot to manual when:
The vessel is within 2 nautical miles of the nearest coast or navigational hazard.
The ship is navigating in a traffic separation scheme.
Sailing through congested waters.
Entering or leaving ports.
During adverse weather conditions.
https://marinegyaan.com/procedure-for-s ... l-to-auto/The procedure will differ from equipment to equipment, but the common generic points are:
Set the auto-steering controls as required for the given weather and loading conditions. Turn the auto-course setting pointer to the course to be steered.
Steer the vessel by hand until she is dead steady on the course to be steered.
Keep the rudder exactly amidship. Ensure this by observing the rudder indicator.
At this instant, the ship’s course should be dead steady and swinging off the course at all.
Turn the Auto-manual switch to Auto.
Switch on the ‘Off-Course Alarm’ and set it as desired.
Observe the steering to confirm that the rudder is being applied correctly when the ship goes off course.
Compare the Gyro and Magnetic compass and record the readings.
How steering is changed/switch from auto to manual?
A simple operation which can be done any time by putting the switch form ‘Auto’ to ‘Manual’.
The steering must be changed from ‘Auto’ to ‘Manual’ once every watch and ship hand steered for some time before retuning to ‘Auto’