Furuno BR-2000 User manual

BRIDGE ALARM MONITORING
& WATCH SAFETY SYSTEM
BR-2000

Contents
1 INTRODUCTION....................................................................................3
2 ALARM MONITORING SYSTEM (AMS)...............................................4
2.1 Multipurpose Screen.........................................................................4
2.1.1 Conning page................................................................................4
2.1.2 Alarm page....................................................................................6
2.1.3 Function page ...............................................................................7
2.2 Alarms................................................................................................9
2.2.1 General .........................................................................................9
2.2.2 Alarm categories.........................................................................10
2.2.2.1 Group alarms ...........................................................................10
2.2.2.2 Detailed alarms ........................................................................10
2.2.3 Alarm types.................................................................................10
2.2.3.1 Event alarm..............................................................................10
2.2.3.2 State alarm...............................................................................10
2.3 Alarm / Conning control panel ....................................................... 11
3 WATCH SAFETY SYSTEM (WSS)......................................................12
3.1 Description of system's function...................................................12
3.2 Timer Control panel ........................................................................13
3.3 Bridge Control panel.......................................................................13
3.4 Cabin Control panel ........................................................................15
3.5 Remote reset push button..............................................................15
4 FLOW CHART OF AMWSS.................................................................16

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. The PLC for
Watch Safety System is also generating an independent "Off course" monitoring, "Gyro mismatch" and
"Magnetic compass compare" functions.
Both systems are described in the drawing below.
Fig. 1 Block Diagram

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.
Conning and the alarm displays are processed in "Display Control Computers".
In some cases depending on redundancy requirements the other multipurpose screen can be replaced
by an other integrated system's screen equipped with change-over switch - e.g. ECDIS-screen.
2.1.1 Conning page
Conning pages can be configured up to two different pages (i.e. main and harbour conning). Conning
pages are selected on Conning Display Control panel.
The conning information is mainly received from following external systems:
- ECDIS processor waypoint information
- Track pilot heading order, steering mode and Off-Track information*
- Autopilot heading order and steering mode information*
- Gyrocompasses Heading information*
- Magnetic Compass with TMC Heading information*
- Heading Change-over selected heading and status information*
- Rate Of Turn information
- Rudder Angle Indication
- Propulsion information
- Thruster Pitch Information
- Echo Sounder Depth and Set Limit information**
- Wind Indicator Speed and Bearing information**
- Dual-axis Speed Log information**
- Machinery information from DCS
*: Information applied through the Watch Safety Electronic unit.
**: Information applied through the ECDIS.
The latest five "non-acknowledged" alarms are displayed in the lower right corner of the display.
The following Watch Safety information is displayed in the lower left corner of the display.
- Bridge Watch set condition; “Enable” or “Disable”
- Back-up navigator selection
- Timer bar indication
Examples of Main Conning and Harbour Conning pages are shown in figures on next page.

Fig. 2 Main Conning Page
Fig. 3 Harbour Conning Page

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.
d) ECDIS alarms: Actual ECDIS alarms. Important alarms are transferred to the Navigation
Safety and Navigation Equipment windows for navigator’s attention; e.g. Waypoint Approach,
Off-track, Depth below limit, Position unreliable, No speed available, No course available.
2) External Alarm:
It consists of several windows indicating external alarms (Engine, Cargo, Steering Gears, General
Alarms, etc.), which are applied from Machinery/Cargo DCS. (See Fig. 5)
3) Local Alarm:
This page is prepared for the navigation equipments, which have no own visual display. (Track pilot,
Autopilot) The alarms generated in the AMWSS itself are also displayed on this page. (See Fig.6.)
Alarms are displayed and processed in different priorities for the identification of alarm importance.
Priorities are as followings:
- Emergency alarms - alarms which indicate that immediate danger to human life, or to the ship
and its machinery exists and that immediate action must be taken.
- Distress, urgency and safety alarms - alarms, which indicate that a caller is in distress or has
an urgent message to transmit.
- Primary alarms - alarms, which indicate a condition that requires, prompt attention to prevent an
emergency condition.
- Secondary alarms - all other alarms.
Each alarm is associated with coloured marker showing into which priority the alarm belongs.
- Emergency alarms – red marker
- Distress, urgency and safety alarms –yellow marker
- Primary alarms –white marker surrounded by red stripe
- Secondary alarms – red marker surrounded by white stripe
The latest five active alarms are displayed in the alarm list in the lower right corner of the display. The
rest of the active alarms are displayed on alarm pages. Alarms in the active alarm list are shown in
order of priority and occurrence.
Non-acknowledged alarms are indicated with a flashing red text and marker and buzzer.
Acknowledged but pending alarms are distinguished from other alarms by steady non-flashing yellow
alarm text on alarm page.
Yellow text below alarm list e.g. Pending navigation alarm, means that there is at least one pending
alarm on alarm page.

Fig. 4 Navigation Alarm
Fig. 5 External
Alarm
Fig. 6 Local Alarm

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”.
**: not accessible to other persons than service engineers.
See the leaflet “INSTALLATION PARAMETER SETTING”
How to print out the History Alarm:
1）Press the FUNC SET key. A menu window will appear on the
screen. The menu contains a cursor (blue triangle) and three items.
2）Move the cursor to the “Alarm History” position with the MOVE
UP and MOVE DOWN keys, and press the ENTER–key. The printer,
connected to the display control computer print a alarm log table.
3）Press the FUNC SET button again. The menu window is closed.

2.2Alarms
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
- Steering system and steering gear
- Position Fixing equipment
- Echo sounder
- Speed log
- Navigation light controls
- Bridge power supply and distribution box
- Watch safety system
Other bridge equipment or systems, which can be included in the AMS:
- Propulsion system
- Engine automation
- GMDSS and Navtex
- Fire detection
- Cargo monitoring alarms
- Water tight doors
- Hospital call etc.
Following alarms are to be included in the centralized Alarm Monitoring System:
- CPA/TCPA
- Shallow depth (Depth below limit)
- Waypoint approach
- Off course
- Off track
- Steering alarms
- Navigation light failure
- Gyro compass failure
- Rate Of Turn indicator failure
- Watch safety failure
- Failure of any power supply to the distribution panels
- Position fix in accurate
- Lost of heading input
- Lost of log input
- System failure
- Gyro mismatch

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.
The following alarms are not to be grouped:
- Emergency alarms
- Alarms associated with faults requiring speed or power reduction or the automatic shutdown of
propulsion machinery
- Steering gear alarms
2.2.2.2 Detailed alarms
There is a common rule for understanding when there is a need for more detailed information of
individual alarm from the external system. That is that when the situation may lead to a danger for the
ship or human life, reduction of speed or maneuverability, more information of alarm is to be available.
2.2.3 Alarm types
2.2.3.1 Event alarm
- Event alarm is an alarm, which is normally used only to alert operator, but does not require any
alarm acknowledgement.
- This type of alarm may activate sound alarm in the external system, or may be only a visual
alarm indication.
- Alarm indication in the external system will disappear by itself.
- AMS has the option (programmed inside AMS) to release the alarm buzzer in AMS.
2.2.3.2 State alarm
- State alarm is an alarm, which normally requires operator’s acknowledgement.
- Sound alarm is normally released in the external equipment.
- Sound alarm of external equipment can be acknowledged at AMS provided there is a two-way
alarm acknowledge handshake between external system and AMS.
- AMS will release the alarm and transmits acknowledgement of this alarm, if acknowledged in
AMS.
- External system should remove local sound alarm.
- Acknowledge from AMS should not remove the state of the alarm in the external system, as long
the alarm condition persists.
- AMS will display pending alarm as long as the alarm condition persists in external system.

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. the
selection of back up
navigator etc.)
Move Up will move
the cursor to next
row up on the
display
Buzzer will release the
sound whenever a
bridge alarm is detected Dimmer will adjust the
illumination of push-
buttons except for
indication of alarms
Enter push button will
enable changes on the
display
Move Down will move
the cursor to next row
down on the display
Alarm Acknowledge
push button will
acknowledge bridge
alarm
Alarm Pages will
select the
Navigation,
External and Local
alarm page for the
display
Conning Pages will
select the Main and
Harbour conning
pages for the display
2.3.1 Alarm Acknowledgement
The latest five "non-acknowledged" alarms are displayed
in the lower right corner of the display.
1) Move the triangle cursor to an acknowledge alarm
with the MOVE UP and MOVE DOWN keys, and
press the ENTER key. The acknowledge alarm will
disappeared from this windows and the text color
of the acknowledged alarm will change from red
flashing to yellow stable in the alarm page.
2) Audible alarm will also stop at the same time.

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.
- Transfer of "non-acknowledged" alarms to specified locations on board.
In addition to watch safety monitoring, the system performs also the following monitoring functions:
- Gyro mismatch
- Magnetic compass difference alarm
- Independent "Off-course" alarm (independent from the automatic steering device).
3.1 Description of system's function
The system is such that, at a predetermined time, the watchkeeper receives warning that he must
indicate his well-being by accepting the warning.
The time interval between warnings is adjustable up to a maximum of 12
minutes (3, 6, 9, and 12 min).
It is possible to acknowledge the warning at the navigation workstation and at other appropriate locations
on the bridge where an effective lookout may be kept. Acknowledgement of any alarm resets
automatically the time interval between warnings. Manual adjustment of main navigation equipment
controls is also used for this purpose.
In the event that the watchkeeper fails to respond and accept the warning within 30 seconds, or if any
alarm has not been acknowledged on the bridge within 60 seconds, the system immediately initiates a
watch alarm to warn the master and the appointed back-up navigator through a fixed installation.
Manual initiation of the watch alarm from the bridge is also possible at any time.
The system is designed and arranged so that only the ship's captain has access for enabling and
disabling it. Time interval is set from timer control panel in captain’s cabin.
Acknowledgement of the watch alarm is only possible on the bridge.
Following control panels are included in the Watch Safety System:
- Timer set-up panel in the captain's cabin.
- Two Bridge Control panels at main navigation workstation. Control panels are used to reset the
watch timer, but can also be used to call appointed back-up navigation officer to bridge.
- Remote timer reset panels, located on bridge wings and the chart table. Push buttons are used
to reset the watch timer.
- Up to 8 Cabin panels, located in different cabins for navigating officers.
- Additional Cabin panels, up to 8, for public places.
Control panels are presented in following pages.

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.
Alarm light will flash in case the
watchkeeper has failed to
acknowledge the watch period
warning in 30 seconds or if any
alarm has not been acknowledged
on the bridge within 60 seconds
Buzzer will sound in case the
watchkeeper has failed to
acknowledge the watch period
warning in 30 seconds or if any
alarm has not been acknowledged
on the bridge within 60 seconds
The buzzer can only be
acknowledged on the bridge
Timer Set switch will activate the
watch safety system
The time period is selected with
intervals of 3, 6, 9 and 12 minutes

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.
Buzzer will sound intermitted
sound in case the operator
has not made any action
within timer set-value.
If there is no operator activity
within following 30 seconds,
alarm is released in captain’s
cabin, public areas and
back-up navigator’s cabin
In case the operator fails to
respond to any bridge alarm
within 60 seconds, alarm is
transferred to captain’s
cabin, public areas and
back-up navigator’s cabin.
Dimmer potentiometer
will adjust the back light
value of pushbutton
lamps. The warning
lamp light level is not
adjustable.
Note The timer set-value
means the watch time
period set on Timer
Control Unit, located in
captain’s cabin
Call Back-up
pushbutton activates
the buzzer in the back
up navigator’s cabin,
captain’s cabin and
public areas.
Warning light will flash in case
the operator has not made any
action within timer set-value,
minus 30 seconds
Whenever the push-button is
pressed, the full timer value is
restored in the watch safety
system

3.4 Cabin Control panel
In navigating officers’ cabins and public places
Buzzer will sound in case the
watch- keeper has failed to
acknowledge the watch period
warning in 30 seconds or if any
alarm has not been
acknowledged on the bridge
within 60 seconds
In case the bridge officer is
pressing Call Back-up button,
buzzer will sound in back-up
navigator’s cabin, captain’s cabin
and public areas.
The buzzer can only be
acknowledged on the bridge.
Alarm light will flash in
case the watchkeeper has
failed to acknowledge the
watch period warning in
30 seconds or if any alarm
has not been
acknowledged on the
bridge within 60 seconds
In case the bridge officer
is pressing Call Back-up
button, alarm light is lit up
in back-up navigator’s
cabin, captain’s cabin and
p
ublic areas.
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.
3.5 Remote reset push button
On bridge wings and the chart table
Reset push button will
reset the watch safety
system timer and
restores the timer
set-value interval

4 FLOW CHART OF AMWSS
Following flow chart illustrates the principal functions of Alarm Monitoring and Watch Safety System.

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
LOCAL
ALARM
HARBOUR
CONNING
3) Move the cursor to the “Backup Officer” position with the MOVE UP and MOVE DOWN keys, and
press the ENTER–key. A list of back-up officers appears on the menu window as Fig. c).
a) Menu window b) Menu Window c) Backup Officer
(normal) (password entered)
selecting menu
4) Pull down the cursor to the wanted back-up
officer position, and press the ENTER key.
Backup officer indication on the Conning
page changes to the selected back-up officer.
5) Press the FUNC SET button again. The menu window is closed.
The selection of back-up navigator should be managed by the captain or
other authorized person. Keep this page under the control of them.