Filter
Top Products
20. Alerts
20-6
20.10 List of Alerts
It is not possible to acknowledge the radar critical alarms from external equipment without displaying the
reason/cause for the alarm. Radar critical alarms are TT COLLISION and AIS COLLISION.
20.10.1 List of navigation alerts
Alert number 320: DEPTH BELOW LIMIT /2/9
------------------------------------
ECHO SOUNDER INDICATES WATER DEPTH
BELOW TRANSDUCER TO EXCEED SPECIFIED
SAFE LIMIT.
Alert number 400: FILTER: POSITION UNRELIABLE /1
------------------------------------
ECDIS IS NOT ABLE TO ESTIMATE A
RELIABLE POSITION. VERIFY AND CHOOSE
SPEED AND POSITION SENSORS THROUGH
'SENSORS’ FUNCTION.
Alert number 401: NO SPEED AVAILABLE /1/8
------------------------------------
NO VALID SPEED SENSOR HAS BEEN FOUND.
VERIFY AND CHOOSE SPEED SEN SORS IN
'SENSORS' BUTTON
Alert number 402: NO HEADING AVAILABLE /1/8
------------------------------------
NO VALID HEADING SENSOR HAS BEEN
FOUND. VERIFY AND CHOOSE HEADING
SENSORS IN 'SENSORS’ FUNCTION.
Alert number 405: LOG DATA UNRELIABLE /7/14
------------------------------------
LOG GIVES 0 KN SPEED, WHICH DOES NOT
CORRESPOND WITH OTHER SPEED SENSORS.
VERIFY AND CHOOSE SPEED SENSORS IN
'SENSORS’ FUNCTION.
Alert number 407: POSITION DISCREPANCY /7/14
------------------------------------
SYSTEM HAS DETECTED MORE DIFFERENCE
THAN SET LIMIT BETWEEN OWN SHIP
PRIMARY AND SECONDARY POSITIONS OR
BETWEEN OWN SHIP AND ANY SENSOR
POSITION. CHECK POSITION SENSORS
Alert number 408: FILTER: SPEED BELOW
xx
KN /3/10
------------------------------------
KALMAN FILTER REQUIRED THAT THE
SPEED OF THE OWN SHIP IS MORE THAN
SPEED LIMIT SET IN ECDIS
INSTALLATION PARAMETERS. IF ROUTE
STEERING WAS NOT USED, THEN KALMAN
FILTER HAS BEEN SET AUTOMATICALLY
OFF BY THE SYSTEM.
Alert number 409: POSITION SOURCE CHANGED /5
------------------------------------
POSITION SOURCE OF OWN SHIP PRIMARY
POSITION HAS BEEN CHANGED
AUTOMATICLLY TO ANOTHER SOURCE THAN
BEFORE. VERIFY NEW SOURCE.