If a tidal stream exists, the flood tide is shown by arrows with feathers on one side and the ebb tidal stream by arrows having no feathers.
Ukuba ukunyuka nokuhla kolwandle kumlambo omncinci kuyenzeka, ukuhla nokunyuka kolwandle okuzayo kuboniswa ngamatolo aneentsiba kwicala elinye nemlambo ophuma elwandle ngamatolo angenazintsoba.