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16 ST4000+ Wheel & Tiller Autopilots: Owner’s Handbook
2 Basic Operation
• the boat arrives at the target waypoint and the navigator accepts
the next waypoint
• you activate the Man Overboard (MOB) function in Track mode
When the alarm sounds, the pilot continues on its current heading but
displays:
• the bearing to the next waypoint
• the direction the boat will turn to take up that bearing
Responding to a Waypoint Advance alarm
To respond to a Waypoint Advance alarm:
• check that it is safe to turn onto the new track, then press
track to
accept the waypoint advance
• alternatively, you can cancel the alarm without accepting the
waypoint advance by pressing:
standby to return to hand
steering, or
auto to return to Auto mode.
Note: Waypoint advance only operates if the ST4000+ is receiving
valid bearing to waypoint and waypoint number information.
Low Battery alarm (LOW BATT)
The ST4000+ activates the Low Battery alarm when the supply
voltage drops below 10 V (±0.5 V).
Responding to a Low Battery alarm:
To respond to a Low Battery alarm:
• press
standby to clear the alarm and return to hand steering
• start the engine to recharge the battery
Watch alarm (WATCH)
The ST4000+ activates the Watch alarm when the autopilot is in
Watch mode and the timer has reached 4 minutes.
Setting the Watch timer
To set the Watch timer:
1. First, you must configure the
WATCH screen as one of the data
pages for display (see page 104).
2. When you have done this select Auto, Track or Wind Vane mode.