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08011 - X2 VDR and S-VDR System Operation Guide Iss01 Rev03
Terms and definitions
Alert
Announcement of abnormal situations and conditions requiring attention. Alerts are divided in four
priorities: emergency alarms, alarms, warnings and cautions.
! Note: the VDR is only ever required to raise a
‘caution’
for any condition that may arise. Therefore,
any mention of an ‘alert’ in this document should be considered a ‘caution’ state.
Bridge work station
The position at which a person is expected to be when performing normal bridge duties,
For example:
Centre line conning;
Bridge wing(s);
Main radar;
Chart table;
Helm;
Communication console
Caution
The lowest priority of an alert. A condition which does not warrant an alarm or warning condition, but
still requires attention and out of the ordinary consideration of the situation or of given information
A caution is indicated by a steady visual indication with a message of sufficient detail to enable the
bridge team to identify and address the caution condition. No acknowledgement is required and the
caution should be automatically removed after the condition is rectified.
Combined EPIRB/VDR capsule
Single unit which meets all the requirements of a satellite EPIRB (as required by the carriage
requirements of SOLAS IV) and all the requirements of a VDR (as required by the carriage
requirements of SOLAS V)
Configuration data
Describes the vessel's equipment, its installation on the vessel and its relation to the VDR. The
storage and playback software uses this data to store the data record and to convert the data record
into information that assists casualty investigation during playback.
Data
Any item of information received by the VDR for recording, including numerical values, text and audio
or radar signals and including all configuration data, except where specifically stated or where the
context dictates otherwise
Dedicated reserve power source
A battery, with suitable automatic charging arrangements, dedicated solely to the VDR, of sufficient
capacity to operate it for a minimum of 2 hours.
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