But these methods were quite inadequate for the new age of discovery, and the pilots and astronomers summoned together by Prince Henry derived a method of checking dead-reckoning by observation of the altitude of the Pole Star.
Kodwa ezi ndlela zazizole ngokungafanelekanga koko ubungakanani bokuveza, ababaqhubi nqwelo moya nenzulu-lwazi ngenkwenkwezi babemenyana kunye nguPrince Henry yasuka kwindlela yokujonga amatye afileyo ngokugqaliseka komphakamo wencam yenkwenkwezi.