5.4 Continuity of operation
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Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.333(90) – Adoption of Revised Performance Standards for Shipborne Voyage Data Recorders (VDRs) – (Adopted on 22 May 2012)This Resolution applies to VDRs installed on or after 01 July 2014. - Annex – Recommendation on Performance Standards for Shipborne Voyage Data Recorders (VDRs) - 5 Operational Requirements - 5.4 Continuity of operation

5.4 Continuity of operation

  5.4.1 The VDR should be capable of operating from the ship's main and emergency source of electrical power.

  5.4.2 If the ship's source of electrical power supply fails, the VDR should continue to record Bridge Audio (see 5.5.5) from the dedicated reserve power source for a period of 2 hours. At the end of this 2 hour period all recording should cease automatically.

  5.4.3 Recording should be continuous unless terminated in accordance with 5.4.2. The time for which all stored data items are retained should be at least 30 days/720 hours on the long-term recording medium and at least 48 hours on the fixed and float-free recording media. Data items which are older than this may be overwritten with new data.

Parent topic: 5 Operational Requirements
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