3 Functional Requirements
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.232(82) - Adoption of the Revised Performance Standards for Electronic Chart Display and Information Systems (ECDIS) - (Adopted on 5 December 2006) - Annex - Revised Performance Standards for Electronic Chart Display and Information Systems (ECDIS) - Appendix 6 - Back-up Requirements - 3 Functional Requirements

3 Functional Requirements

Parent topic: Appendix 6 - Back-up Requirements

3.1 Required functions and their availability

  3.1.8 If radar and other navigational information are added to an electronic back-up display, all the corresponding requirements for radar information and other navigation information of this performance standard should be met.

  3.1.9 If an electronic device is used, the display mode and generation of the neighbouring area should be in accordance with section 8 of this performance standard.

3.1.1 Presentation of chart information

 The back-up system should display in graphical (chart) form the relevant information of the hydrographic and geographic environment which are necessary for safe navigation.

3.1.2 Route planning

 The back-up system should be capable of performing the route planning functions, including:

  • .1 taking over of the route plan originally performed on the ECDIS;

  • .2 adjusting a planned route manually or by transfer from a route planning device.

3.1.3 Route monitoring

 The back-up system should enable a take-over of the route monitoring originally performed by the ECDIS, and provide at least the following functions:

  • .1 plotting own ship's position automatically, or manually on a chart;

  • .2 taking courses, distances and bearings from the chart;

  • .3 displaying the planned route;

  • .4 displaying time labels along ships track;

  • .5 plotting an adequate number of points, bearing lines, range markers, etc., on the chart.

3.1.4 Display information

 If the back-up is an electronic device, it should be capable of displaying at least the information equivalent to the standard display as defined in this performance standard.

3.1.5 Provision of chart information

  .1 The chart information to be used in the backup arrangement should be the latest edition, as corrected by official updates, of that issued by or on the authority of a Government, authorized Hydrographic Office or other relevant government institution, and conform to IHO standards.

  .2 It should not be possible to alter the contents of the electronic chart information.

  .3 The chart or chart data edition and issuing date should be indicated.

3.1.6 Updating

 The information displayed by the ECDIS back-up arrangements should be up-to-date for the entire voyage.

3.1.7 Scale

 If an electronic device is used, it should provide an indication:

  • .1 if the information is displayed at a larger scale than that contained in the database; and

  • .2 if own ships position is covered by a chart at a larger scale than that provided by the system.

3.1.10 Voyage recording

 The back-up arrangements should be able to keep a record of the ships actual track, including positions and corresponding times.

3.2 Reliability and accuracy

3.2.1 Reliability

 The back-up arrangements should provide reliable operation under prevailing environmental and normal operating conditions.

3.2.2 Accuracy

 Accuracy should be in accordance with section 12 of this performance standard.

3.3 Malfunctions, warnings, alarms and indications

 If an electronic device is used, it should provide a suitable alarm or indication of system malfunction.

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