Visual Aids to Navigation Flashcards
What was the original light aid to Navigation?
Lighthouse
What is light nominal range?
The maximum distance at which you would see the light
What is dipping and rising distance?
There are tables containing this information and it is the point at which the light just appears on your horizon
What does Isophase mean?
On same time period each colour/dark
What does Occulting mean?
On longer than off (black flash)
What is Sectored Navigation?
Sectored lights will generally indicate the correct approach in a channel
What information about lights are found on charts?
Type of light (occulting, flashing, etc), how high the light is situated, har far the light will be visible for, and the colour of the light
If no colour of light is mentioned on the chart, what colour should you assume it would be?
White
Where would Moire Lights be located?
A marina entrance
What are Moire Lights?
Indicates when you are in the correct approach channel by displaying a vertical bar
