IEC 61996 pdf download.Maritime navigation and radiocommunication equipment and systems
This International Standard specifies the minimum performance requirements, technical characteristics and methods of testing, and required test results, for shipborne voyage data recorder (VDR) installations as required by chapter V of the International Convention for Safety of Life at Sea (SOLAS), as amended. It takes account of IMO resolution A.694 and is associated with IEC 60945. When a requirement in this standard is different from IEC 60945, the requirement in this standard takes precedence. This standard incorporates the applicable parts of the performance standards included in IMO Resolution A.861. NOTE All text of this standard, whose wording is identical to that of IMO Resolution A.861, is printed in italics, and the Resolution and associated performance standard paragraph numbers are indicated in brackets.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60068-2-27:1987, Environmental testing – Part 2: Tests – Test Ea and guidance: Shock IEC 60268-16:1998, Sound system equipment – Part 16: Objective rating of speech intelligi- bility by speech transmission index IEC 60651:1979, Sound level meters IEC 60945:1996, Maritime navigation and radiocommunication equipment and systems – General requirements – Methods of testing and required test results IEC 61097-2:1994, Global maritime distress and safety system (GMDSS) – Part 2: COSPAS- SARSAT EPIRB – Satellite emergency position-indicating radio beacon operating on 406 MHz – Operational and performance requirements, methods of testing and required test results IEC 61097-5:1997, Global maritime distress and safety system (GMDSS) – Part 5: Inmarsat-E – Emergency position-indicating radio beacon (EPIRB) operating through the Inmarsat system – Operational and performance requirements, methods of testing and required test results IEC 61097-7:1996, Global maritime distress and safety system (GMDSS) – Part 7: Shipborne VHF radiotelephone transmitter and receiver – Operational and performance requirements, methods of testing and required test results IEC 61162 (all parts), Maritime navigation and radiocommunication equipment and systems – Digital interfaces IEC 61260:1995, Electroacoustics – Octave-band and fractional-octave-band filters
4 Performance requirements
4.1 General Performance requirements described in this clause are specified by reference to the numbered paragraphs of IMO Resolution A.861. 4.2 Purpose (A.861/1) The purpose of a Voyage Data Recorder (VDR) is to maintain a store, in a secure and retrievable form, of information concerning the position, movement, physical status, command and control of a vessel over the period leading up to, and following, an incident having an impact thereon. This information is for use during any subsequent investigation to identify the cause(s) of the incident. 4.3 Operational requirements (A.861/5) 4.3.1 Design and construction (A.861/5.1.4) The design and construction, which shall be in accordance with the requirements of resolution A.694(17) and international standards acceptable to the International Maritime Organization (IMO) , shall take special account of the requirements for data security and continuity of operation as detailed in 4.4 and 4.5. 4.3.2 Maintenance of sequential records (A.861/5.1.1) The VDR shall continuously maintain sequential records of pre-selected data items relating to the status and output of the ship’s equipment, and command and control of the ship, referred to in 4.6. 4.3.3 Co-relation in date and time (A.861/5.1.2, 5.4.1) To permit subsequent analysis of factors surrounding an incident, the method of recording shall ensure that the various data items can be co-related in date and time during playback on suitable equipment. The recording method shall be such that the timing of all recorded data items can be derived on playback with a resolution sufficient to reconstruct the history of an incident in detail (see 4.6.1).