The tables are entered to find the angle corresponding to the safe distance selected to pass off the lighthouse, high cliff or any other high land-mark.
Iitafile zingeniswa ukufumana imbombo enomlinganiselo womgama okhuselekileyo okhethwe ukudlula indlu yesibane, amatye atyibilikisayo anyukileyo ngaselwandle, okanye nokuba zeziphi iimpawu zomhlaba ezinyukileyo.