|seamark:type = light_major|
|Maritime navigation light for long distances|
|Group: Marine navigation|
|Used on these elements|
|Status: de facto|
|Tools for this tag|
A major light is a light that is intended to be seen at extended distances and will indicate the presence of prominent land masses or provide guidance into harbours or rivers. This tag is used where the supporting structure is not specified, otherwise the seamark:type tag should take the value of the supporting structure (most often "landmark")
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Sectored light attributes
Note that sectored lights must bear a sector number (# = 1, 2, 3, ...) even if there is only one sector.
For more information on tagging sectored and directional lights, see: sectored and directional lights.
Example for each sector (# is a number):
Category Beacon as upper, lower, directional
Rhythm of light
The number of flashes, the combination of flashes or the Morse character(s) within one period of full sequence.
Time of the time occupied by an entire cycle of intervals of light and eclipse.
The sequence of times occupied by intervals of light and eclipse for all 'light characteristics' except for occulting where the sequence of times is occupied by intervals of eclipse and light.
The nominal range at which the light can be seen in nautical miles.
Light sector start
The sector limit 1 specifies the first limit of the sector. The order of sector limit 1 and sector limit 2 is clockwise around the light.
- seamark:light:1:sector_start=* - in decimal degrees
Light sector end
The sector limit 2 specifies the second limit of the sector. The order of sector limit 1 and sector limit 2 is clockwise around the light.
- seamark:light:1:sector_end=* - in decimal degrees
The vertical elevation of the actual lamp or light source (in meters) above the specified vertical datum (typically, mean sea level) – known as the focal height.
Shows the visibility of light.
Shows what time the light is on.
This table is a wiki template with a default description in English. Editable here.
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