John Smeaton He pioneered the use of 'hydraulic lime' (a form of mortar that will set under water) and developed a technique involving dovetailed blocks of granite in the building of the lighthouse. His lighthouse remained in use until 1877 when the rock underlying the structure's foundations had begun to erode; it was dismantled and partially rebuilt at Plymouth Hoe where it is known as Smeaton's Tower. Deciding that he wanted to focus on the lucrative field of civil engineering, he commenced an extensive series of commissions, including: Smeaton is considered to be the first expert witness to appear in an English
Odderøya Lighthouse The historic one was built in 1874, replacing the 1832 lighthouse. This historic lighthouse has been inactive since 1984. The tall concrete, cylindrical tower is white with a red roof and it is attached to a 1-1/2 story lighthouse keeper's house. A fog bell is attached to the front of the tower. The building is now owned by the city of Kristiansand. Odderøya Lighthouse Odderøya Lighthouse () is a coastal lighthouse located on the southwestern coast of the island of Odderøya in Kristiansand municipality in Vest-Agder county, Norway. The lighthouse was first built in 1832. The lighouse was replaced in