2. Navigation Tasks
2.4
Monitoring
Monitoring is a continuous check of navigation data, operator actions and performance of the system. Part of the
monitoring is also the display of electronic sea charts and conning information.
Electronic
sea
chart
Data
distribution
Monitoring
Data
logging
2.4.1
Display of electronic sea chart
The following information is available on the electronic sea chart:
• Own ship position
• Planned track
• Planned safety lines
• Ship's predictor (See the section Using the Predictor
(section 28.13, 29.10, 30.11, according to Autopilot
used)
2.4.2
Alarms
The following alarms are incorporated:
• Route monitoring alarms
• Position calculation alarms
• Position monitoring alarms
• Waypoint approach alarms
2.4.3
Man overboard
Built-in man over board function records position at the time of man overboard.
2.4.4
Data logging
The following information may be logged:
• Past track history
• Events
2.4.5
Data distribution
Data is distributed via the ECDIS's computer system.
2-4
Alarms
Man
overboard
• Chart alarms
• ARPA targets
• Chart information
• AIS targets
• Alarms for sensor failure
• Alarms for system failure
• Alarms for incorrect operator action
• Alarm based on chart database
• Dangerous targets
• Voyage recording