You may use a signal from a beam-on direction of the radio-beacon on 20 - 30 mile transits, only when this beacon is more than 200 miles away.
Ungasebenzisa uphawu ukusuka kukhanyo olukhoyo kwicala lika nomathotholo lesibane esibonisa ingozi kwimayile ezingamashumi amabini ukuya wezingamashumi amathathu kuhanjiso xa esi sibane sibonisa ingozi singaphezulu kwamakhulu amabini eemayile kude