How to Ensure the Integrity of a VDR System
VDR is a ship’s equivalent to the black box of an aeroplane. It keeps track of all the details of a maritime accident, including the time, date and location, speed, and the course of the vessel. The information recorded can be a valuable resource for identifying safety risks and improving the operation of the ship.
In accordance with IMO regulations, the standard http://www.digitaldealdataroom.info/what-is-the-purpose-of-a-data-audit VDR is required to store a variety of data. This includes dates, times, and Coordinated Universal Time, vessel position (latitude and longitude, coordinate reference) as well as heading and velocity, audio from the bridge (voice messages recorded using one or more microphones placed on the bridge for recording conversations and audio alerts) and Very High-Frequency Radio Communications (VHF), and radar information (a faithful reproduction of the display on view at the moment of recording) as well as rudder and engine order, watertight door status, and accelerations.
The system consists of an encoder that process and encodes the data stream sensors that provide input to the concentrator and a final recording medium (FRM) designed to survive incidents and enable retrieval of data from voyages. The FRM can be fixed on the vessel, or a floating unit linked to EPIRB to pinpoint the location of the vessel in the event of an accident.
The most effective method to ensure the integrity of the vdr system is make its use an integral element of bridge crew training and drills. The saved data can also be used to determine areas where training is required and also to enhance bridge procedures and operational safety.