These methods are mainly of use with short transits of up to 30 or 40 nautical miles and are used in plane sailing.
Ezi ndlela zingentla zisetyenziswa kakhulu kuhanjiso olukufutshane ukusuka kwiimayile ezingamashumi amathathu ukuya kumashumi amane kwaye asetyenziswa kuhambo ngenqwelo moya