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Cape Spencer Light (Alaska) facts for kids

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Cape Spencer Light
Cape Spencer Light
Cape Spencer Light is located in Alaska
Cape Spencer Light
Cape Spencer Light
Location in Alaska
Location Cross Sound
Glacier Bay National Park and Preserve
Yakutat, Alaska
Coordinates 58°11′56″N 136°38′25″W / 58.19891°N 136.64018°W / 58.19891; -136.64018
Year first constructed 1925
Automated 1974
Foundation rock
Construction reinforced concrete
Tower shape flat-roofed house with short tower on top
Markings / pattern art deco architecture
white tower, black balcony and lantern
Height 25 feet (7.6 m)
Focal height 105 feet (32 m)
Original lens Third order Fresnel lens
Range 17 nautical miles (31 km; 20 mi)
Characteristic Fl W 6s.abr> emergency light (Fl W 6s) of reduced intensity if main light is extinguished.
Admiralty number G6508
ARLHS number ALK-004
USCG number 6-1070

The Cape Spencer Light is a lighthouse in Alaska, United States, next to the entrance to Cross Sound and Icy Strait. The light is still an active aid to navigation. It is located on an islet in the southernmost end of Glacier Bay National Park and Preserve.


A beacon at Cape Spencer was requested as early as 1906, but it wasn’t until 1912 that this rocky region received its first light — an unmanned acetylene lantern. Funds for a lighthouse to properly mark Cape Spencer were later granted, and construction commenced in May 1924. A single-story reinforced concrete building (51’ x 62’) was built at the summit of the rocky mass to house both the fog signal equipment and the keepers. From the center of the structure's roof, a 14-by-14-foot tower rose another twenty-five feet. The Coast Guard removed the Fresnel lens from Cape Spencer in 1974, the same year in which the lighthouse was automated. The small lighthouse, perched atop the seventy-foot-tall rock, is still considered an important navigational aid and receives regular Coast Guard visits.

When manned the crew of Cape Spencer light consisted of four men. One was a First Class Boatswain's Mate (commanding), a Second Class Engineman, a Seaman and a Fireman. Each man was assigned a tour of duty on the island which lasted one year. Under normal conditions, no crewman ever left during this period. Each crewman had his own bedroom and stood a four-hour watch. Not only was the light maintained but a permanent radio watch was kept.

Supplies were provided by buoy tender operating out of Ketchikan. Each crew member was allowed a per diem amount which was pooled and set aside in an account which could be used to purchase food from a civilian food store in Ketchikan. Generally, the men ate very well, depending on their cooking skills. The basement of the light structure contained a large food storage room as well as a couple of freezers for frozen foods. The resupply was done every two weeks, weather and other missions allowing. There were periods of over three weeks without any resupply ship. This was difficult not only for the food situation but for lack of mail and a new supply of movies, no other entertainment being available the station being 100 miles (160 km) west of Juneau.

The station was powered by three Caterpillar Diesel Generator sets. One ran at all times providing power for the station. Multiple storage tanks were situated around the station to hold fuel for these generators. On a lower level from the station was a boat house and a crane engine building. The crane was operated by another Caterpillar engine. The island had no landing place with sheer cliffs rising on all sides. To get on or off the island, other than by helicopter, the crane was hooked up to a sixteen-foot fiberglass boat with an outboard engine, The men would climb into the boat and be swung by the crane over the edge of the island and dropped the sixty feet to the water. To get back on the boat had to be maneuvered under the hook at the base of the cliff, attached and lifted back up. Needless to say this was not any easy feat and was seldom done in rough weather. Resupply was accomplished the same way, hoisting cargo nets of supplies up onto the boathouse deck.

To get men back and forth from Juneau, the boat would bring them into Dicks Arm, a fjord, located about a mile from the island which shelter provided a calm landing place for bush pilots to bring float planes in. Dicks Arm was also used for recreation for the men on the light when they could get off. It teemed with black bear, grizzlies and had Dall sheep on the higher slopes. The waters were full of giant halibut, salmon in season and giant king crabs. Seals basked on the rocky islands around the light and occasional pods of killer whales would pass between the light and shore.

Considered "isolated duty", Cape Spencer was still not the worst nor most isolated post manned by the Coast Guard.

It was the first lighthouse in Alaska to be given radiobeacon facilities, in 1926.

The lighthouse was listed on the National Register of Historic Places in 1975.

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