Radio masts and towers Radio masts and towers Radio masts and towers are, typically, tall structures designed to support antennas (also known as aerials) for telecommunications and broadcasting, including television. There are two main types: guyed and self-supporting structures. They are among the tallest man-made structures. Masts are often named after the broadcasting organizations that originally built them or currently use them. In the case of a mast radiator or radiating tower, the whole mast or tower is itself the transmitting antenna. The terms "mast" and "tower" are often used interchangeably. However, in structural engineering terms, a tower is a self-supporting or cantilevered structure,
Ketch set on a ketch. The "Scarlet Queen" was a 78-foot ketch with a white hull, teak decking, brass bright-work, and sporting the "Scarlet Queen" herself, on the bowsprit, naked as the day she was born, "a fresh, young body... looking forward, ... bold, teasing... dressed in only a crown, and painted brilliant red." A William Garden–designed Formosa 51 ketch named "Wanderer" was the main setting in the 1992 film "Captain Ron". Three Formosa 51s were used in filming. A Formosa 51 ketch named "Viking Spirit" was used in the 2004 romantic comedy "50 First Dates" starring Adam Sandler and Drew