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Questions and Answers
What is the characteristic of a fixed light?
What is the characteristic of a fixed light?
- It has a rhythmic sequence with irregular intervals
- It changes colour periodically
- It shows a sequence of intervals of light and darkness
- It shows a continuous and steady light (correct)
What is the term used to describe the time taken to complete one sequence of a rhythmic light?
What is the term used to describe the time taken to complete one sequence of a rhythmic light?
- Period (correct)
- Phase
- Sequence
- Character
In which publication can you find additional information about lights that is not given on charts?
In which publication can you find additional information about lights that is not given on charts?
- Admiralty Sailing Directions (NP 1 to 72)
- Admiralty List of Lights and Fog Signals (NP 74 to 84) (correct)
- Charts
- None of the above
What is the term used to describe one element of a rhythmic light sequence, such as a flash or an eclipse?
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?
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.
