Instruction manual

PROFICIENCY IN SURVIVAL CRAFT AND RESCUE BOATS OTHER THAN FAST
RESCUE BOATS
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• the system automatically overrides any other input system when an
emergency alarm is required.
• the system automatically overrides any volume control provided to give the
required output for the emergency mode when an emergency alarm is
required.
• the system is arranged to minimize the effect of a single failure so that the
alarm signal is still audible (above ambient noise levels) also in the event of
failure of any one circuit or component, by means of the use of more than one
device for generating an electronic sound signal.
Fig.2.1 Public Address System and General alarm panel
EMERGENCY SIGNALS
EMERGENCY SIGNAL = continuous blast of the whistle for a period of not less
than 10 seconds, supplemented by the continuous ringing of the general alarm bells
for not less than 10 seconds.
ABANDON SHIP SIGNAL = a succession of seven or more short blasts followed by
one long blast of the whistle supplemented by a comparable signal on the general
alarm bells.
ABANDON signal MUST always be confirmed by word from the Master.
HANDLING THE LIFEBOATS:
- To lower lifeboats, one short blast.
- To stop lowering the lifeboats, two short blasts.
- Dismissal from boat station, three short blast
The emergency signals from the alarm bells could be verbally confirmed by the
duty officer using the amplifier station/public address system.
The signals should be repeated few times, with a long enough pause in
between in order not to create confusion.