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
Moholmen Lighthouse every 8 seconds. The 54,900-candela light can be seen for up to . The white tower is cast iron and built in a square pyramidal shape. Moholmen Lighthouse Moholmen Lighthouse () is a coastal lighthouse in Vågan Municipality in Nordland county, Norway. The lighthouse is located on a small island in the Vestfjorden about southwest of the village of Kabelvåg and about straight west of the Skrova Lighthouse. Moholmen Lighthouse was originally built in 1914. The original tower was moved to the island of Tranøy in Hamarøy Municipality in 1936. A new tower was built at Moholmen, and that tower