Characteristic light
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A light characteristic is a coded description displayed on a nautical chart under the chart symbol for a lighthouse, lightvessel or sea mark with a light on it, to indicate how that light is recognised visually and audibly.
An example of a light characteristic is Gp Oc(3).10s 15m 10M. This indicates the light is a Occulting Group of 3, every 10 seconds, 15 metres tall and visible for 10 nautical miles (19 km).
The following chart describes some of the different types of light characteristics:
