5.3 Continuity of Operation
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Assembly - IMO Resolution A.861(20) - Performance Standards for Shipborne Voyage Data Recorders (VDRs) - (adopted on 27 November 1997) This Resolution applies to VDRs installed before 01 July 2014 - Annex - Recommendation on Performance Standards for Shipborne Voyage Data Recorders (VDRs) - 5 Operational Requirements - 5.3 Continuity of Operation

5.3 Continuity of Operation

  5.3.1 To ensure that the VDR continues to record events during an incident, it should be capable of operating from the ship's emergency source of electrical power.

  5.3.2 If the ship's emergency source of electrical power supply fails, the VDR should continue to record Bridge Audio (see paragraph 5.4.5) from a dedicated reserve source of power for a period of 2 h. At the end of this 2 h period all recording should cease automatically.

  5.3.3 Recording should be continuous unless interrupted briefly in accordance with paragraph 6 or terminated in accordance with paragraph 5.3.2. The time for which all stored data items are retained should be at least 12 h. Data items which are older than this may be overwritten with new data.

Parent topic: 5 Operational Requirements
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