C-MAP: object information

Expert

The essentials

On a C-MAP chart, each object (buoy, light, sounding, wreck, restricted area…) carries an information sheet: its characteristics, as the chart describes them. The “Inspection” window displays them in one gesture.

  1. Choose “C-MAP” in the “Maps” section of the layers menu.
  2. Long-press the object, or double-click with the mouse.
  3. The “Inspection” window lists on the left the objects found at that spot. Tap one to read its characteristics on the right.
  4. Close the window with the cross at the top right.

Inspection window: lateral buoy, topmark and light, with their characteristicsInspection window: lateral buoy, topmark and light, with their characteristics

Going further

The “Inspection” window

  • Where to tap: the search covers the objects near the touched point; the tolerance follows the scale, tight when you are zoomed in on a harbor, wider in an overview. Zoom in if the window shows “No features found”.
  • Other objects take priority: if the long press lands on an AIS target, a POI or a route, that object is selected, and the “Inspection” window does not open.
  • Content: one tab per object found (lateral buoy, depth contour, sounding, depth area, magnetic variation…), and for the chosen object, its attributes: shape, color, mark category, light characteristics, period, data source… Some objects carry photos: tap one to enlarge it full screen.
  • Position: the bottom of the window gives the position of the touched point, in degrees, minutes and seconds.
  • Placement: on a phone, the window opens at the center of the screen; on a tablet or a computer, next to the touched point.

The sheet can only be read on the “C-MAP” base map. On other base maps, the long press keeps its usual functions.

See also