as in the tropics; External friction round bollards or through fairleads; Internal friction due to bending round sheaves of blocks.
njengakwitropiki; Ukhuhleko olwenzeka ngaphandle intsika ekubotshelelwa kuyo intambo yenqanawa okanye kwintambo yokurhuqa ngobunono; ukhuhleko lwangaphakathi ngenxa yokugoba kwamavili akwibhloko.