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Staged Alarms:
Initial Alarm
Visual alarm - local only to the bridge
First Stage
Audible
alarm - local only to the bridge
Second Stage (programmable)
Audible & visual alarm at
Navigators' accommodation
area + paging
transmission (individual cabins can be
selected i.e. duty OOW and/or
Master...etc)
Third Stage (selectable)
Audible
& visual alarms at remaining Officers'
areas around
the ship (can be inhibited)
Warning Devices:
Initial Stage Alarm
Flashing red beacon, with dimmer, can be
observed from all navigation areas
First Stage Alarm
Selectable tone (32) alarm, audible from
all navigation areas
Second Stage Alarm
Combined audible & visual alarm in the
navigators' accommodation area + paging
transmission
Third Stage Alarm
As for second stage, in remaining
Officers' areas
Operational Modes:
Underway
Usual mode when vessel at sea on
passage. Dormant time period selectable
between 3 - 12 minutes. Reset
as described previously
Anchored
It is still required to have a OOW on
duty at anchor,
however the dormant
period can be stretched to 20
minutes to
allow more flexibility
Inactive
System idle, no timer running or PIR
active
In Port Secure
System acts as a standard intruder alarm
and will
activate the alarms should any movement
be detected on a secure and assumed
empty bridge
Isolated
Does not operate under any circumstances
- key switch operated
Timer (Td) Extension
For maximum protection the dormant timer
should be set as low as practical.
However, this does not allow
the OOW a great deal of time for a
comfort break. The
extend button sets the
dormant period time to a
pre-set figure 3 - 12 minutes.
Once movement is
again detected, normal
monitoring is resumed.
Call For Assistance
The OOW may at any time press and hold
an on screen button or any of the manual
reset buttons to activate the 2nd and
3rd stage alarms should he/she require
immediate assistance on the bridge. A
paging transmission is also sent and
repeated every 2 minutes till cancelled.
A portable wireless "Panic Button" is
also available for added protection,
especially for high risk piracy areas.
Inputs & Outputs:
Inputs
The following inputs are accepted by the
PLC via a NMEA interface...
$HCHDT : NMEA sentence from autopilot (IEC
62116)
$GPVTG : NMEA sentence from GPS (IEC
62116)
$__ALR : NMEA sentence from central
alarm
N/O : Opto isolated - autopilot selector
N/O : Signal from unacknowledged nav
equipment
N/O : Reset signal from other bridge
equipment
Outputs
The following outputs are provided by
the PLC via the NMEA interface...
$BNALR : NMEA sentence to VDR recording
mode change, alarm activations and
resets
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Dormant Period Reset Methods:
Manual
The dormant period can be reset and the
staged alarms accepted from either the
touch-screen operator display or any of
the illuminated push buttons located at
- conning position, bridge wings, chart
table
Automatic - OOW Movement Detection
The dormant period is reset and the
staged alarms accepted when movement of
the OOW is detected by the PIRs as
he/she carries out their duties - types
available...
Directional PIRs
Covers the normal operational area of
the OOW
Automatic / Manual Operation:
Manual
Requires the Master to select 'Underway'
mode from password protected Admin Menu
to begin monitoring
Automatic
System will automatically switch to
'Underway' mode when autopilot is
selected
Test Facilities:
Periodic Testing
To ensure continued satisfactory
operation of the system, key elements
should be tested regularly (weekly)
PIRs
'Walk test' facility, indicates if the
PIR has registered your presence.
Bridge Strobe
Tests bridge visual warning devices
Bridge Sounder
Tests bridge audible warning devices
Cabin Sounders
Tests cabin audible / visual warning
devices
Paging System
Sends a test page to the pocket paging
receivers
Anti-Tamper & Fault Indication:
Anti-tamper
PIRs
Fitted with an anti-tamper contact to
detect any unauthorised removal of the
lens cover
Warning Devices
Covers secured with high security
fasteners
Fault Indication
Mains Failure
If the incoming mains fails or is
deliberately interrupted a warning is
displayed on the user display. This
alarm is transferred to the ship's alarm
system
Day / Night Mode
The main screen can be switched to night
mode for operation at night
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