Maritime Navigation: Lights and Signals
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Questions and Answers

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?

  • Period (correct)
  • Phase
  • Sequence
  • Character
  • 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?

    <p>Phase</p> Signup and view all the answers

    How many classes of lights are there?

    <p>3</p> Signup and view all the answers

    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.

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