VDR is known as a data recorders on board ships which frequently records a range of critical details. Its purpose is to help with the investigation of accidents regarding ships. This gadget is essentially comparable to an aeroplane’s black pack and will withstand heavy weather, accidents or fire.
Various receptors are connected to the system via a interaction protocol that uses the NMEA 0183 regular which defines how data is transmitted from a talker (the VDR) to multiple guests. This allows almost all systems to communicate with each other which has a minimum of mistakes. The accumulated data is normally digitalized and compressed and stored in a tamper-proof storage space unit that can be either a set capsule or a float absolutely free one that could be connected with the EPIRB with respect to early area in case of an accident.
During usual operation, the VDR is continually overwritten when using the latest data. Nevertheless , in the event of a major accident or unpleasant incident, it is essential that crew press the conserve button to record the relevant info.
The IMO performance requirements for VDRs state that the data recorded should be able to include: day and moments of the unpleasant incident, ship’s position (latitude, longitude, coordinate reference), speed and heading, bridge audio (acquired by microphones placed in order to capture conversations visit and audible alarms), Very High Consistency radio devices, radar data to record a devoted replica of the display that was upon view when recording, key alarms, rudder order and response and hull opportunities status.
