A rule of thumb is that a three-foot (one meter) difference in the water level requires lengthening the mooring lines by a distance equivalent to one-half the boat's length.
Umthetho uthi omahluko weenyawo ezintathu (imitha enye) kumlinganiso wamanzi ufuna ukwandiswa kweentambo zokutsala ngomgama olingana necala elinye lobude besikhephe.