International hydrographic organization specifications for chart content and display aspects of ecdis
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S-52 Appendix 2 - IHO
| 3.4 Text, Diagrams etc. 3.4.1 Text as part of the route monitoring display Text information should be used on the route monitoring display only when unavoidable, since it has to be written large to be readable and so causes clutter. Details of displaying text are given in 3.1.5 and in the Presentation Library. Soundings are treated by the Presentation Library as symbols to ensure they are legible and correctly located. 3.4.2 Text windows, explanatory diagrams etc. superimposed on the route monitoring display The 270 mm by 270 mm minimum area of chart presentation for route monitoring should normally be used for chart and navigation information alone. Any windows containing text, diagrams, etc superimposed on the route monitoring display should be temporary, and should not obscure important chart or navigational information. Such windows should use only the "User Interface" colours from the Presentation Library. It should be possible for the mariner to relocate a window in a less important part of the display, such as on land, or behind the ship. 39 S, Edition 6.0 March 2010 3.4.3 Separate text panel on the same screen as the route monitoring display A Mariner's Information Panel, consisting mainly of text (alphanumerics), might include: - ECDIS alarms and indications, e.g." crossing safety contour, - navigation information, e.g. time, position, course to make good, etc, - chart information, e.g. contour selected for own-ship safety contour, - supplementary chart information, e.g. tide tables, sailing directions, - interface dialogue, e.g. "change tonight colour table. - etc. Sea experience has shown that the text panel on the route monitoring display may have a prominence out of proportion to its significance to safety of navigation. This is Download 0.98 Mb. Share with your friends:
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