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Diamond Head Light

 
Location: Diamond Head / Oahu Island near Honolulu, HI

Local Marine Forecast.


Small Craft Advisory is in effect until August 24 at 6:00PM HST by NWS
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM HST THURSDAY... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A SMALL CRAFT ADVISORY, WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM HST THURSDAY. * WINDS...EAST TO NORTHEAST 20 TO 25 KNOTS.

Latest Condiitions.

About Diamond Head Light

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The location of the light is Diamond Head / Oahu Island. The nearest city is Honolulu, HI. The station was first established in 1899. The current lighthouse was first lit in 1918.

The tower has a occulting white light at a focal plane height of 147 ft above mean high water. The light has a nominal range of 17 nautical miles. The tower height is 64 ft. The light has a period of 10 seconds.

Open to the Public?: No    Active?: Yes

Identification number: 29060 (U.S.)

The current lighthouse was completed in 1918. The tower was automated in 1924.

Obscured from 110 to 272, red from 099 to 110. Between 105 to 110, red sector may be obscured by vegetation. Emergency light of reduced intensity when main light is extinguished.

An 'occulting' light is a light in which the total duration of light in a period is longer than the total duration of darkness and the interval of darkness (eclipses) are usually of equal duration. So in the 10 second period, the light is on for more than 5 then off for less than 5.

Diamond Head Light was listed on the National Register of Historic Places on Oct. 31, 1980, reference number 80001282.

NOTE: Sectors of colored glass are placed in the lanterns of some lights in order to produce a system of light sectors of different colors. In general, red sectors are used to mark shoals or to warn the mariner of other obstructions to navigation or of nearby land. Such lights provide approximate bearing information, since observers may note the change of color as they cross the boundary between sectors.
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