What is a summary of Cape Hatteras Lighthouse?

Answer 1

The Cape Hatteras lighthouse is a famous lighthouse on Hatteras Island, North Carolina, USA. It is the tallest lighthouse in use in the US. Completed in 1803, the original structure was eventually demolished following the construction of a new and improved lighthouse between 1868 and 1870. The new lighthouse became the tallest lighthouse tower in the US, with the light projecting from 191 feet, or 58 m, above the water. The tower stands 63 metres tall from the base of the foundation to the tip of the roof, and the structure contains 268 steps.

By 1935, erosion had so threatened the tower that the water was actually reaching its base. After attempts to hold back the erosion process through dikes and breakwaters proved futile, the tower was abandoned and a functional light placed on a steel tower further inland from the shore. After a few years, wooden revetments, a more effective method for erosion control, helped reclaim some of the shoreline, and the lighthouse was declared safe for use and recommissioned on 23 January 1950.

Further erosion of the shoreline necessitated the relocation of the entire tower in 1999. The granite underlying the foundation of the lighthouse was mined out and replaced with steel supports. Using hydraulic jacks, these steel supports then moved the entire tower along a system of track beams. The actual removal operation began on 17 June 1999 and was completed on 9 July 1999. On this date, the tower was then lowered onto a new concrete pad 2900 feet (883m) away, and its temporary steel foundation replaced with brick. The lighthouse survived the move and a ceremonial relighting was held on 13 November that year.