If en route you come across beacons or buoys, then you have a means to continually check up on your position as well as information and a time-point for re-plotting your course afterwards.
Ukuba endleleni udibana nesibane esilumkisa ingozi okanye umqondiso odadayo wengozi ngoku unayo indlela yokuphinda ujonge apho ukhoyo kwakunye nolwazi kwakunye nendawo yexesha ukwenzela ukubeka indlela yakho emva kwayo yonke into