VDR is mostly a data recorders on board delivers which frequently records many different critical info. Its purpose is to aid with the investigation of accidents concerning ships. This product is essentially the same as an aeroplane’s black field and will withstand weighty weather, collisions or fire.
Various detectors are coupled to the system what is the purpose of a data audit via a interaction protocol that uses the NMEA 0183 standard which defines how data is transmitted from a talker (the VDR) to multiple audience. This allows every systems to communicate with each other with a minimum of problems. The gathered data is definitely digitalized and compressed and stored in a tamper-proof storage unit that can be either a fixed capsule or a float absolutely free one that may be connected with the EPIRB with regards to early area in case of a major accident.
During typical operation, the VDR is constantly overwritten together with the latest data. Yet , in the event of an accident or event, it is essential the fact that crew press the save button to record the relevant data.
The IMO performance expectations for VDRs state that the information recorded must be able to include: night out and time of the automobile accident, ship’s standing (latitude, long,, coordinate reference), speed and heading, connection audio (acquired by microphones placed in order to capture discussions and audible alarms), Very High Rate radio landline calls, radar data to record a faithful replica with the display that was on view at the time of recording, main alarms, rudder order and response and hull openings status.