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Questions and Answers
What does the abbreviation 'Fl' stand for when it comes to navigational lights?
What does the abbreviation 'Fl' stand for when it comes to navigational lights?
- Flashing light (correct)
- Floating light
- Flickering light
- Fast light
Which abbreviation is used for a group of two flashes in navigational lights?
Which abbreviation is used for a group of two flashes in navigational lights?
- Gr.Fl
- Fl(2+1)
- Oc(3)
- Fl.(2) (correct)
How is a 'long flashing' light abbreviated?
How is a 'long flashing' light abbreviated?
- Lg.Fl
- L.Flash
- L.Fl (correct)
- F.Lg
What type of light has the total duration of darkness longer than the duration of light in each period?
What type of light has the total duration of darkness longer than the duration of light in each period?
Which abbreviation is used for a quick light with a high frequency of flashes?
Which abbreviation is used for a quick light with a high frequency of flashes?
How is a group of two flashes followed by one flash abbreviated in navigational lights?
How is a group of two flashes followed by one flash abbreviated in navigational lights?
Which type of light characteristic is indicated by 'Gp Oc(3) W' in the text?
Which type of light characteristic is indicated by 'Gp Oc(3) W' in the text?
What does the abbreviation '10M' refer to in the context of navigational lights?
What does the abbreviation '10M' refer to in the context of navigational lights?
What does the abbreviation 'F' indicate about a navigational light?
What does the abbreviation 'F' indicate about a navigational light?
What did the IALA do in 1977 regarding maritime buoyage systems?
What did the IALA do in 1977 regarding maritime buoyage systems?
If a light characteristic is described as 'Flashing', what can be inferred about its total duration?
If a light characteristic is described as 'Flashing', what can be inferred about its total duration?
What does the abbreviation '15m' represent in relation to a navigational light?
What does the abbreviation '15m' represent in relation to a navigational light?
What does the prefix 'iso-' mean in 'isophase light'?
What does the prefix 'iso-' mean in 'isophase light'?
In navigational lights, what does 'Q' indicate?
In navigational lights, what does 'Q' indicate?
What does 'I.Q' stand for in terms of navigational lights?
What does 'I.Q' stand for in terms of navigational lights?
Which abbreviation represents a very quick group of flashes with more than 80 and less than 160 per minute?
Which abbreviation represents a very quick group of flashes with more than 80 and less than 160 per minute?
What type of light uses appearances of light of two clearly different durations to represent characters in Morse Code?
What type of light uses appearances of light of two clearly different durations to represent characters in Morse Code?
In the abbreviation 'Mo.(A)', what does the 'Mo' indicate?
In the abbreviation 'Mo.(A)', what does the 'Mo' indicate?
Flashcards
Fl
Fl
Abbreviation for Flashing light, indicating a light with set flash intervals.
Fl(2)
Fl(2)
Two flashes in a navigational light.
LFl
LFl
Abbreviation for Long Flashing light.
Occulting light
Occulting light
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Q
Q
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Fl(2+1)
Fl(2+1)
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Gp Oc(3) W
Gp Oc(3) W
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10M
10M
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F
F
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IALA
IALA
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Flashing light
Flashing light
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15m
15m
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Isophase light
Isophase light
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Quick light
Quick light
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I.Q
I.Q
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Morse Code light
Morse Code light
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Mo.(A)
Mo.(A)
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Study Notes
Navigational Light Abbreviations
- 'Fl' stands for Flashing, indicating a light characteristic with defined flash intervals.
- A group of two flashes in navigational lights is abbreviated as Fl(2).
- 'Long flashing' light is abbreviated as LFl.
- A light with a total duration of darkness longer than its light duration in each cycle is known as a Occulting light.
- A quick light with a high frequency of flashes is indicated by the abbreviation Q.
- A group of two flashes followed by one flash is abbreviated as Fl(2+1).
Light Characteristics and Measurements
- 'Gp Oc(3) W' indicates a navigational light characteristic of Group Occulting with three darkness periods, with a color specification (W for white).
- The abbreviation '10M' refers to a light's range, indicating it can be seen from 10 nautical miles away.
- 'F' indicates a navigational light that is a Fixed light, which does not exhibit any flashing or varying characteristics.
- In 1977, the IALA established standards for maritime buoyage systems to improve navigational safety.
Inferences from Light Characteristics
- A light described as Flashing typically has a short total duration of darkness compared to its light duration.
- The abbreviation '15m' represents the range of visibility at 15 nautical miles for a navigational light.
- The prefix 'iso-' in 'isophase light' means that the light has equal duration of light and darkness.
- In navigational lights, 'Q' stands for Quick light, indicating a rapid flash rate.
- 'I.Q' stands for Isophase Quick, which indicates a quick light with equal intervals of light and darkness.
Morse Code Representation
- A light that uses appearances of light of two clearly different durations to represent characters is known as a Morse Code light.
- In the abbreviation 'Mo.(A)', 'Mo' indicates a Morse Code light, specifically signifying the presence of dots (short signals) and dashes (long signals).
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Description
Test your knowledge on maritime light characteristics, including details such as color, cycle period, height above chart datum, and visibility range. Identify complete light characteristic codes like 'Gp Oc(3) W 10s 15m 10M'.
