NautoPilot Operator Unit
8 Annex
10000001052
Edition:001
Alert Title
Alert Description
Catego-
ry
Priority
Escala-
tion
Possible Cause
Remedy
HCS STOPPED
POWER FAILURE:
CHECK POWER
SUPPLY
Alarm
B
Power supply of the
operator unit is out-
side of tolerable lim-
its.
Use manual steering.
Check supply volt-
age. Reset operator
unit. Replace Opera-
tor unit.
SIM SENSOR DATA
SIMULATED
SENSOR DATA
IN USE: CHECK
SENSORS
Alarm
B
Sensor data received
which is tagged as
simulated.
Check connected
sensors, use manual
steering.
ACCEL. EXC
ACCELERATION
LIMIT EXCEEDED:
REDUCE SPEED
Warning
B
User adjusted accel-
eration limit exceeded
Reduce Speed, con-
trol limit
ACCEL. LIMITD
ACCELERATION
LIMIT EXCEEDED:
REDUCE SPEED
Warning
B
as
Warning
Operator adjusted ac-
celeration limit was
exceeded.
Reduce Speed, con-
trol adjusted limit
ACT. OU FAIL
CHECK AP OPERA-
TOR UNIT
Warning
B
Active Operator re-
ports a failure
Use manual steering,
check Operator unit
HEADING
DEVIATED FROM
SET HEADING:
TAKE HELM
Warning
A
as
Alarm
to BN-
WAS
(30 s)*
Offset between ac-
tual and set heading
exceeds operator ad-
justed off heading lim-
it.
Check surroundings,
use manual steering,
check rudder limit,
check steering sys-
tem
HDG DOUBTFUL
HDG DIFFERENCE
DETECTED: CHECK
HDG SENSORS
Warning
B
as
Warning
Heading monitor has
detected a difference
between two heading
sources.
The operator adjusted
off heading limit was
exceeded.
Check heading sen-
sors.
HDG JUMPED
CHECK ACTUAL
AND SET HEADING
Warning
B
as
Warning
A jump in the heading
data was detected.
Check set heading,
check heading sen-
sors.
LOW SPEED
CTRL ACCURACY
LIMITED: USE MAN-
UAL STEERING
Warning
B
as
Warning
Current speed is be-
low adjusted low
speed limit. Control
accuracy is degraded.
Increase speed, use
manual steering.
