12 Calculations and Accuracy
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) - Module B - Operational and Functional Requirements - 12 Calculations and Accuracy

12 Calculations and Accuracy

  12.1 The accuracy of all calculations performed by ECDIS should be independent of the characteristics of the output device and should be consistent with the SENC accuracy.

  12.2 Bearings and distances drawn on the display or those measured between features already drawn on the display should have accuracy no less than that afforded by the resolution of the display.

  12.3 The system should be capable of performing and presenting the results of at least the following calculations:

  • .1 true distance and azimuth between two geographical positions;

  • .2 geographic position from known position and distance/azimuth; and

  • .3 geodetic calculations such as spheroidal distance, rhumb line, and great circle.

Parent topic: Module B - Operational and Functional Requirements
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