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Cape Spencer Light

Location: Entrance to Cross Sound / Icy Strait near Gustavus, AK
Source: Library of Congress (cropped)

Local Marine Forecast.

Small Craft Advisory 
Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 NM Wind forecasts reflect the predominant speed and direction expected. Seas forecasts represent the average of the highest one-third of the combined windwave and swell height. ...SMALL CRAFT ADVISORY DUE TO SEAS THROUGH LATE TONIGHT...

About Cape Spencer Light

The location of the light is Entrance to Cross Sound / Icy Strait. The nearest city is Gustavus, AK. The station was first established in 1913. The current lighthouse was first lit in 1925.

The lighthouse is a square white concrete tower.

The tower has a flashing white light at a focal plane height of 105 ft above mean high water. The light has a nominal range of 17 nautical miles. The tower height is 30 ft. The light has a period of 10 seconds.

Open to the Public?: No    Active?: Yes

Identification number: 6-1070 (U.S.)
Identification number: G6508 (International)

Emergency light (Fl W 6s) of reduced intensity if main light is extinguished.

Cape Spencer Light was the first lighthouse in Alaska to be given radio-beacon facilities, in 1926. The light was automated in 1974.

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 10 second period, the light is on for less than 5 then off for more than 5.

Cape Spencer Light was listed on the National Register of Historic Places on Dec. 4, 1975, reference number 75002160.

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