Casquets lighthouses permanently discontinued from 11 May 2011. The South West Tower is topped with a helipad and there is another helipad on a flat section of the rock. The rocks are also marked using racon with a Morse letter T on radar displays. The lighthouse complex was automated in 1990 and is monitored and controlled from the Trinity House Operations Control Centre in Harwich. <br> Casquets lighthouses Casquets Lighthouse is an active lighthouse located on the rocky Les Casquets, Alderney, Channel Islands. Casquets Lighthouse is the latest in a series of three lights on Les Casquets. The first lighthouses started operation
Caloundra Lighthouses on Lady Elliott's Island in 1872/73), Colonial Architect FDG Stanley designed a structure which utilised readily available local timber, specifying a hardwood frame clad with plated iron sheeting. This reduced the cost of construction, and despite problems of termite infestation and rusting, this type of construction, or its derivative, a wooden frame with corrugated galvanised iron sheeting, became the standard for subsequent nineteenth century Queensland lighthouses. Between 1873 and 1901, 14 lighthouses were constructed in Queensland using hardwood framing and plated iron sheeting, and another 7 were constructed with hardwood frames and corrugated iron cladding. The latter were associated mostly