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 active and in situ: Grassy Hill (1886, Grassy Hill Light) at Cooktown and Goods Island (1886) in the Torres Strait. The 1968 lighthouse and signal station is one of only two constructed to this design in Australia, the only one to survive, and one of a small number of concrete lighthouses built in Queensland. In the combination of lighthouse, signals and radar functions in the one structure, the 1968 lighthouse and its ancillary generator shed are important in demonstrating the range of lightstation structures designed for particular locations. Together, the two lighthouses on Caloundra Head, which are both substantially intact