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Carysfort Reef Light

Location: Carysfort Reef near Key Largo, FL
Source: National Marine Sanctuary

Local Marine Forecast.

There are no active watches, warnings or advisories 

Latest Condiitions.

About Carysfort Reef Light

The location of the light is Carysfort Reef. The nearest city is Key Largo, FL. The station was first established in 1825. The current lighthouse was first lit in 1852.

The lighthouse is a brown, octagonal, pyramidal skeleton tower.

The tower has a flashing white light at a focal plane height of 100 ft above mean high water. The light has a nominal range of 15 nautical miles. The tower height is 120 ft. The light has a period of 60 seconds.

Open to the Public?: No    Active?: Yes

Identification number: 3-945 (U.S.)

1s fl 39s ec.
1s fl 9s ec.
1s fl 9s ec.
(3R sectors)

White from 211 to 018, 049 to 087 and 145 to 184, red in intervening sectors. RACON C ( ).

The range for light through the red sectors is 13nm.

The structure originally had a balcony that encircled the enclosed, circular light keeper's quarters. The balcony and its railing were later removed.

A 'flashing' light is a light in which the total duration of light in a period is shorter than the total duration of darkness and the appearances of light (flashes) are usually of equal duration. So in the 60 second period, the light is on for less than 30 then off for more than 30.

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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