1. INTRODUCTION Alarm Monitoring and Watch Safety System (AMWSS) is intended to centralize all bridge and other important alarms to one position on the bridge and to monitor watchkeepers activity as well as to ensure his well-being. The system operation is divided in two independent Programmable Logic Computer (PLC) systems, one taking care of Alarm Monitoring and the second one to take care of Watch Safety System.
2. ALARM MONITORING SYSTEM (AMS) The basic feature of alarm monitoring PLC is to collect all bridge and other important alarms and display them on the multipurpose screen. When the full redundancy and greater flexibility of display is required then two independent computers and screens are optionally installed. 2.1 Conning/Alarm Display Two multipurpose screens are used to display either the conning information or the alarm information.
2.1.2 Alarm page Three alarm pages are available as below. 1) Navigation Alarm page: It consists of four windows indicating navigation related alarm. (See Fig. 4) a) Navigation Safety: Navigation alarms requiring great attention for safety. b) Navigation Equipment: Navigation sensor system alarms. c) GMDSS alarms: It alerts when any distress call received.
2.1.3 Function page Function page is used to set some operation and installation parameters. Alarm History Selection of Back-up navigator* Installation parameters** Selection of over-head panel display presentation (optional feature) *: not accessible to other persons than captain or other authorized person. See the leaflet “HOW TO SELECT BACK-UP NAVIGATOR”.
2.2 Alarms 2.2.1 General In the practice, the general rule for integration of different bridge equipment is that any equipment, which can sound or indicate any alarm on the bridge, is to be included in the Alarm Monitoring system. Following navigation equipment is to be integrated in the Alarm Monitoring system: ARPA radars (CPA/TCPA alarm) ECDIS Track Control System and Heading Control system...
2.2.2 Alarm categories 2.2.2.1 Group alarms Alarms are arranged in groups, in order to reduce the quantity of information presented to the operator. Such alarm groups can be e.g. fire, watertight doors, and bilge water etc alarms. Group alarm can be assigned to any priority.
2.3 Alarm / Conning control panel Alarm / Conning control panel is used to manage bridge alarms and screen presentation. System Alarm will illuminate in case the Alarm monitoring system is failing Function push button will enable changes on the display (I.e.
3. WATCH SAFETY SYSTEM (WSS) Watch safety system is intended to monitor watchkeeper’s activity as well as to ensure his well being and awareness. The system incorporates the following functions: Monitoring of operator's activity in different navigation equipment. Transfer of watch safety alarm to specified locations, in case the operator fails to respond in given time period to watch safety alarm.
3.2 Timer Control panel In captain's cabin Enable Light will lit, whenever the watch safety system is activated from captain’s cabin If the pushbutton is pressed, the audible alarm sound and all lamps are illuminated in the panel for test purposes. Timer Set switch will activate the watch safety system...
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3.3 Bridge Control panel Two panels at main navigation workstation Enable Light will lit, whenever the watch safety system is activated from captain’s cabin If the pushbutton is pressed, the audible sound and all lamps are illuminated in the panel for test purposes.
3.4 Cabin Control panel In navigating officers’ cabins and public places Enable Light will lit, whenever the watch safety system is activated from captain’s cabin If the pushbutton is pressed, the audible alarm sound and all lamps are illuminated in the panel for test purposes.
4 FLOW CHART OF AMWSS Following flow chart illustrates the principal functions of Alarm Monitoring and Watch Safety System.
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HOW TO SELECT BACK-UP NAVIGATOR 1) Press the FUNC SET key. A menu window will appear on the screen. The menu contains a cursor (blue triangle) and three items. See Fig. a). 2) Press the keys in the following manner. (Password entry): See Fig. b). EXTERNAL ALARM 3) Move the cursor to the “Backup Officer”...