supplying an unlicensed offshore radio station from the UK. In an earlier House of Commons debate (in June 1966), the government had claimed that the pirate ships were a danger because of radio frequency interference to emergency shipping channels, and to overseas radio stations and the pirates were paying no royalties to artists, composers or record companies. Furthermore, it was stated that the pirates' use of wavelengths also broke international agreements. The Manx parliament, the Tynwald, attempted to exclude the North ship from the legislation, appealing to the European Court on the legality of the act being applied to the Isle of Man. Two (Radio 270 and Radio London) of the remaining four UK-based offshore stations closed, but the two Caroline ships continued with their supply operation moved to Netherlands waters, where unlicensed ship-based broadcasting was not outlawed until 1974. When Marine &c. Broadcasting Offences Act become law on 14 August 1967, Radio Caroline was renamed Radio Caroline International. Six weeks later, the BBC introduced its new national pop station Radio 1, modelled largely on the successful offshore station Radio London, and employed many of the ex-pirate DJs. The BBC Light, Third, and Home programmes became Radios 2, 3 and 4 respectively. On 3 March 1968, the radio ships Mi Amigo and Caroline were boarded and seized before the day's broadcasting began. They were towed to Amsterdam by a salvage company to secure unpaid bills for servicing by the Dutch tender company Wijsmuller Transport. Caroline was broken up for scrap in 1972. Because of the rise of land-based pirate stations after the MOA became law (usually stations run from bedrooms or outdoor sheds with small wattage transmitters), at least two stations later broadcast using the Caroline name, one based in Dublin. Those broadcasts took place between 1970 and 1973. 1970: Radio North Sea International On 24 March 1970, a radio ship named anchored off the east coast of England during the UK general election campaign, broadcasting as Radio North Sea International (RNI). RNI operated on medium wave, short wave and FM. Its medium wave transmission was jammed by the UK authorities and on 13 June, RNI changed its name to Radio Caroline International with co-operation from Ronan O'Rahilly. Radio Caroline lobbied against the Labour Party, for the Conservative Party and for the introduction of licensed commercial radio in the United Kingdom. Following the election, RNI resumed its original name but