What does the period of a lighted aid to...

Question 1 / 2707066636ee928f7522a1c519e10

Question 1 of 2707066636ee928f7522a1c519e10

What does the period of a lighted aid to navigation refer to?

Question 1 of 27070

What does the period of a lighted aid to navigation refer to?

🔍 Key Concepts

• Aid to navigation light characteristics (flash, occulting, isophase, etc.) • Difference between an individual flash and a complete light cycle • How light periods are shown in the Light List and on charts

💭 Think About

• When a light has multiple flashes, eclipses (dark times), or groups of flashes, at what point does its pattern "start over"? • Is the period measured from the beginning of one flash to the beginning of the next identical pattern, or just from one flash to the very next visible change? • Look at an example: a light that shows two quick flashes then darkness. What would mariners need to know about its timing to positively identify it?

✅ Before You Answer

• Be clear on the difference between a single flash and a full repeating pattern of that light • Remember that the period includes both lighted and eclipse (dark) intervals in the pattern • Ask: what definition would best allow a navigator to identify a light by timing its full, repeating sequence?

Question 1 of 27070

What does the period of a lighted aid to navigation refer to?

The official date of construction or establishment

The length of time between flashes of the light

The time required for the light to complete each cycle

The time required for the longest flash of each cycle

Question 1 / 2707066636ee928f7522a1c519e10

Question 1 of 2707066636ee928f7522a1c519e10

What does the period of a lighted aid to navigation refer to?

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Question 1 of 27070

What does the period of a lighted aid to navigation refer to?