Cape Decision Light

Cape Decision Light

Location	Southwestern extremity of Kuiu Island, Alaska
Coordinates	56°00′05″N 134°08′09″W / 56.001463°N 134.135822°W / 56.001463; -134.135822
Tower
Foundation	Rock
Construction	Concrete
Automated	1974
Height	75 feet (23 m)
Shape	square tower on building
Heritage	National Register of Historic Places listed place
Light
First lit	1932
Focal height	23 m (75 ft)
Lens	Third order Fresnel lens (original), Solar powered aero beacon (current)
Range	18 nautical miles (33 km; 21 mi)
Characteristic	flashing White 5s, Obscured from 134° to 245°. Emergency light (Fl W 5s) of reduced intensity if main light is extinguished.
Cape Decision Light Station
U.S. National Register of Historic Places
U.S. Historic district
Alaska Heritage Resources Survey
Nearest city	Edna Bay
Area	less than one acre
Architect	U.S. Lighthouse Service
Architectural style	Moderne
MPS	Light Stations of the United States MPS
NRHP reference No.	04001568[1]
AHRS No.	XPA-00012
Significant dates
Added to NRHP	February 2, 2005
Designated AHRS	[date]

Cape Decision is a lighthouse located on Kuiu Island adjacent to Sumner Strait in Southeast Alaska.

The first attempt to light these waters was an acetylene lantern placed on the Spanish Islands, just off the southern end of Kuiu Island. The lantern was proved ineffective and consequently Congress appropriated $59,400 in 1929 for a lighthouse and construction began in September of that year. However, weather and inadequate funds delayed the completion of the station until it finally became active in March 1932. The total cost ended up in excess of $150,000. The lighthouse became automated in 1974 and in 1989 fire damaged the tram, dock, boathouse, hoist house, paint shed, and helipad. The original third order Fresnel lens was replaced in 1996 with solar powered aero beacon. The lens is on display in Clausen Museum in the nearby community of Petersburg.

The lighthouse was added to the National Register of Historic Places in 2005.^[1][2]

It is currently an active aid to navigation. The lighthouse is currently owned and maintained by the Cape Decision Lighthouse Society.

• Media related to Cape Decision Lighthouse at Wikimedia Commons
• Cape Decision Lighthouse Society
• Cape Decision Lighthouse at Lighthouse Friends
• "Historic Light Station Information and Photography: Alaska" (PDF). United States Coast Guard Historian's Office.
• Rowlett, Russ. "Lighthouses of Alaska". The Lighthouse Directory. University of North Carolina at Chapel Hill.
• Historic American Engineering Record (HAER) No. AK-56, "Cape Decision Light Station, South Kuiu Island on Sumner Strait, Petersburg, Wrangell-Petersburg Census Area, AK", 47 photos, 4 photo caption pages