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Point Sur Lighthouse
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Point Sur Lighthouse
Point Sur Lighthouse is a lightstation at Point Sur 24.6 miles (39.6 km) south of Monterey, California at the peak of the 361-foot (110 m) rock at the head of the point. It was established in 1889 and is part of Point Sur State Historic Park. The light house is 40 feet (12 m) tall and 270 feet (82 m) above sea level. As of 2016, and for the foreseeable future the light is still in operation as an essential aid to navigation.
The lighthouse has had four different light sources during its history. First, it had an oil wick lamp, and then an oil vapor lamp. Three different fuels were used: whale oil, lard oil, and kerosene. Electricity wasn't introduced to the surrounding area and light house until the 1950s.
Since Point Sur was a major point used for navigation, it was equipped with first-order Fresnel lens, the largest made at the time. The lens was more than 6 feet (2 m) in diameter and 9 feet (3 m) tall. It weighed 4,330 pounds and included 16 panels of prisms, each with a bulls-eye in the center surrounded by concentric rings of prismatic glass. Its light beam could be seen to the horizon, which for the Point Sur light, at 270 feet (82 m) feet high, is 23 miles (37 km).
The entire structure, including the pedestal and clockworks was 18 feet (5 m) tall and weighed 9,570 pounds (4,341 kg). Each ring projects the light beyond the previous one.
In dense fog, the light beam might not be visible, so the lighthouse had a foghorn to alert ships. A coal-powered foghorn was installed when the light was used, but this labor-intensive system was replaced as soon as better technology was available. A steam-driven fog signal was installed by the turn of the century. It was fired by wood harvested from the redwoods of Big Sur. The steam boiler used about 100 cords of wood per year.
Diaphone horns were placed on top of the fog-signal room from 1935 to 1960. The two horns produced a two-tone "bee-oh" sound. In 1972, the "Super Tyfon Double Fog Signal," named after the giant Typhon from Greek mythology, was put into use. This system consisted of two compressed air horns sounding simultaneously, and could be heard up to 3 nautical miles (6 km) away. The modern electric tone fog signal was a 12 volt high frequency fog signal with a sound range of half a nautical mile. The high frequency was very effective in fog.
The station's staff was a head keeper and three assistant keepers. The families of the keepers lived at the station. The station had separate residences for the head keeper and the assistant keepers.
The lighthouse keepers and their families were relatively isolated at Point Sur. The station included all facilities needed for them to be self-sustaining. There was a well in the sand flats at the base of the rocks and a pump that filled a 53,000 US gallons (200,627 L) cistern (later replaced by a water tower) at the station. A barn and a blacksmith shop was built. A carpenter shop held supplies for the keepers to do their own maintenance. The lamp tower, oil room, and fog signal room were all combined into one building because of limited space. The Old Coast Road connected the station to Monterey, but it was a nearly a full day's trip via wagon until the northern portion of the macadam Cabrillo-San Simeon Highway was completed in 1924.
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Point Sur Lighthouse
Point Sur Lighthouse is a lightstation at Point Sur 24.6 miles (39.6 km) south of Monterey, California at the peak of the 361-foot (110 m) rock at the head of the point. It was established in 1889 and is part of Point Sur State Historic Park. The light house is 40 feet (12 m) tall and 270 feet (82 m) above sea level. As of 2016, and for the foreseeable future the light is still in operation as an essential aid to navigation.
The lighthouse has had four different light sources during its history. First, it had an oil wick lamp, and then an oil vapor lamp. Three different fuels were used: whale oil, lard oil, and kerosene. Electricity wasn't introduced to the surrounding area and light house until the 1950s.
Since Point Sur was a major point used for navigation, it was equipped with first-order Fresnel lens, the largest made at the time. The lens was more than 6 feet (2 m) in diameter and 9 feet (3 m) tall. It weighed 4,330 pounds and included 16 panels of prisms, each with a bulls-eye in the center surrounded by concentric rings of prismatic glass. Its light beam could be seen to the horizon, which for the Point Sur light, at 270 feet (82 m) feet high, is 23 miles (37 km).
The entire structure, including the pedestal and clockworks was 18 feet (5 m) tall and weighed 9,570 pounds (4,341 kg). Each ring projects the light beyond the previous one.
In dense fog, the light beam might not be visible, so the lighthouse had a foghorn to alert ships. A coal-powered foghorn was installed when the light was used, but this labor-intensive system was replaced as soon as better technology was available. A steam-driven fog signal was installed by the turn of the century. It was fired by wood harvested from the redwoods of Big Sur. The steam boiler used about 100 cords of wood per year.
Diaphone horns were placed on top of the fog-signal room from 1935 to 1960. The two horns produced a two-tone "bee-oh" sound. In 1972, the "Super Tyfon Double Fog Signal," named after the giant Typhon from Greek mythology, was put into use. This system consisted of two compressed air horns sounding simultaneously, and could be heard up to 3 nautical miles (6 km) away. The modern electric tone fog signal was a 12 volt high frequency fog signal with a sound range of half a nautical mile. The high frequency was very effective in fog.
The station's staff was a head keeper and three assistant keepers. The families of the keepers lived at the station. The station had separate residences for the head keeper and the assistant keepers.
The lighthouse keepers and their families were relatively isolated at Point Sur. The station included all facilities needed for them to be self-sustaining. There was a well in the sand flats at the base of the rocks and a pump that filled a 53,000 US gallons (200,627 L) cistern (later replaced by a water tower) at the station. A barn and a blacksmith shop was built. A carpenter shop held supplies for the keepers to do their own maintenance. The lamp tower, oil room, and fog signal room were all combined into one building because of limited space. The Old Coast Road connected the station to Monterey, but it was a nearly a full day's trip via wagon until the northern portion of the macadam Cabrillo-San Simeon Highway was completed in 1924.
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