You may need to comply with this specification if you are the master or owner of a ship.
It is a criminal offence for a master or owner of a ship to allow the ship to begin a voyage unless the ship is equipped with compliant radio equipment. One of these requirements is that the radio equipment must be either a single sideband installation or, if the ship is operated exclusively within 20 nautical miles of the coast, a VHF frequency modulated installation which complies with this specification may be used.