Questions and Answers
What is the characteristic of a fixed light?
What is the term used to describe the time taken to complete one sequence of a rhythmic light?
In which publication can you find additional information about lights that is not given on charts?
What is the term used to describe one element of a rhythmic light sequence, such as a flash or an eclipse?
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How many classes of lights are there?
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Study Notes
Light Characteristics
- Additional information about lights not found on charts can be found in the Admiralty List of Lights and Fog Signals (NP 74 to 84) and the Admiralty Sailing Directions (NP 1 to 72)
- The character or characteristic of a light refers to its appearance
- Principal characteristics of lights include the sequence of light and darkness and, in some cases, the colour of the light
Classification of Lights
- Lights can be divided into three classes: fixed, rhythmic, and alternating
- Fixed lights show continuously and steadily without interruption
- Rhythmic lights show a sequence of light and darkness, with the whole sequence repeating at regular intervals
Rhythmic Light Elements
- Period of a rhythmic light refers to the time taken to complete one sequence
- Phase of a rhythmic light refers to one element of a sequence, such as a flash or an eclipse
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Description
This quiz covers the characteristics of lights and signals in maritime navigation, including their sequence, color, and description in Admiralty Lists and Sailing Directions.
