The VDR (Voyage Data Recorder) is the maritime equivalent of the black box that is used by airlines. The system is usually two-part, comprising an information-collecting unit that is connected to a deck-mounted protective capsule designed to withstand fire, deep-sea pressure and shock as well as penetration. It is typically used to record incidents during navigation, but it also provides valuable data to analyze the effects of heavy weather and monitoring of performance, as well as training for crew members.
Up-grading
Many ships equipped with VDR/SVDR devices meet the bare minimum regulatory requirements However, the crew is encouraged to consider using the equipment for incident investigation as well as preventive maintenance and bridge team training as well as to record near misses. Additionally, there are software options that could significantly extend the period of time that VDR data is available beyond the current minimum of 12 hours and a decision should be made on whether or not to upgrade to this.
The system is http://www.digitaldealdataroom.info/database-access-control-best-practices built around an industrial-grade computer that performs many functions, such as processing and encoding data received from sensors. The capsule is designed to survive any kind of accident and to store the data. The primary components of the VDR system are a data collection unit that is located on the bridge, a dedicated power source, an interface unit and backup batteries. The unit collects data from integrated sources such as microphones used to record bridge audio and transmits it to a Concentrator, where a series NMEA 0183 sentences is interpreted and coded to be sent to the final recorded media.
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