The VDR (Voyage Data Recorder), is the maritime version of the black box utilized by airlines. The system is typically two-parts that include a data collection unit and a deck-mounted protective pod designed to withstand shock, fire, deep-sea pressurized, and penetration. It is typically used for recording navigation incidents, but can also provide useful information for analysis of heavy weather damage and monitoring of performance as well as crew training.
Up-grading
Many ships equipped with VDR/SVDR meet the minimum regulatory requirements. However, members are encouraged to use the equipment to record near accidents, conduct incident investigations and to conduct preventive maintenance. There are also programs that can extend the time duration for which VDR data is available beyond the minimum of 12 hours. It is important to make a decision taken about whether to upgrade.
The system is built around an industrial grade computer that is able to perform many functions like processing and encoding the data that is gathered from the sensors. The capsule is designed to withstand any disaster and keep the data. The VDR system consists of the data collection device that is located on the bridge as in addition to a dedicated power supply, an interface unit, and backup batteries. The unit collects data from all integrated sources including microphones, which record bridge audio and transmits it to the Concentrator, where it is processed into a series of NMEA 0183 sentences are read and encoded before being sent to the final recording medium.
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