Offshore radio acquired the yacht Ceto and installed radio equipment. Unfortunately, the apparatus could not operate properly overboard, the signal being heavily affected by the climate conditions. The transmitter was then replaced by Siemens loudspeakers and the Ceto toured England "broadcasting" gramophone records interspersed by advertising. Unauthorized offshore broadcasting stations operating from ships or fixed platforms in the coastal waters of the Northern Sea first appeared in 1958. There were as many as eleven such stations in the mid-1960s. One of the most popular offshore radio broadcasts in Europe came from Radio Caroline, which developed out both of the strict broadcasting regulations
Radio Mercur Radio Mercur Radio Mercur was a Danish offshore broadcasting commercial radio station. It started regular transmission on August 2, 1958 and ceased officially on July 31, 1962, though there still were 3 days of illegal transmissions from August 13–15, 1962. Later broadcasting took place under the name of Radio Mercur in Majorca from 1969–70 and again on the Spanish Costa del Sol from 1982–84 and finally in Copenhagen, Denmark as a local radio station from 1987-94. A Swedish "pirate" station, Skånes Radio Mercur (changed name to Radio Syd in 1961 ), started broadcasting on December 14, 1958, from the same