JRC JMR-7210-6X - 12.6 Alerts at Automatic Sailing

12-15 Section 12 Automatic Sailing (Option)
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付録
12.6 Alerts at Automatic Sailing
The following sailing monitoring alerts may occur during automatic sailing.
Cause Conditions to raise Automatic sailing Countermeasure
Course difference
warning
The actual heading
deviated from the course
beyond a preset course
difference limit.
Can be continued -
Cross Track alarm
The ship deviated from
the track beyond a preset
cross-track limit during
the track control.
Can be continued -
HDG(Sensor
Failure) alarm
Heading sensor data is
lost or invalid during the
track control.
Stops
Switch the steering mode of
AUTO PILOT to HAND.
Otherwise, the current
rudder angle is retained for
AUTO PILOT (for details,
refer to the AUTO PILOT
instruction manual).
POSN(Sensor
Failure) alarm
Position sensor data was
lost or invalid during the
track control.
Performs dead
reckoning for 10
minutes and stops
automatic sailing.
Switch the steering mode of
AUTO PILOT to AUTO or
HAND. Otherwise, the
current course is retained for
AUTO PILOT (for details,
refer to the AUTO PILOT
instruction manual).
STW(Sensor
Failure) alarm
Speed sensor data is lost
or invalid during the track
control.
Performs dead
reckoning using
the last received
speed value.
POSN(Automatic
Changed) warning
POSN source was
automatically changed.
Can be continued -
STW(Automatic
Changed) warning
STW source was
automatically changed
Can be continued -
POSN(Deviation)
warning
Deviation between
position source exceeded
beyond a preset POSN
Discrepancy limit.
Can be continued -
Lost AP caution A communication error
occurred between
Autopilot and ECDIS
Stops Switch the steering mode of
AUTO PILOT to AUTO or
HAND. Otherwise, the
current course is retained for
AUTO PILOT (for details,
refer to the AUTO PILOT
instruction manual).
An Autopilot failure
occurred.
Switch the steering mode of
AUTO PILOT to AUTO or
HAND. Otherwise, the
current rudder angle is
retained for AUTO PILOT
(for details, refer to the
AUTO PILOT instruction
manual).