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
Pirate radio been called pirate radio adopted the term offshore radio, which was usually the term used by the owners of the marine broadcasting stations. More recently the term "free radio" implied that the broadcasts were commercial-free and the station was there only for the output, be it a type of music or spoken opinion. In this context, 'pirate' radio thus refers to stations that do advertise and plug various gigs and raves. Since this subject covers national territories, international waters and international airspace, the only effective way to treat this subject is on a country by country, international waters and international