A system that determines the position of unseen underwater objects by transmitting sound waves and measuring the time it takes for their echo to return after hitting the object.
Inkqubo ethi iphonononge indawo enezinto ezingabonwayo ngokuhambisa izandi zamaza nethi ilingane nexesha ethi ilithathe kwisandi esilandela loo ntshukumo xa athe abetha loo nto.