Their lower ends are secured to the keel, whence they extend outwards and upwards to the upper deck, and, with the longitudinals, form the main support of the shell plating.
Izigqibelo zazo ezingezantsi ziqhoboshelwe kwisiseko, njengeko zinabela ngaphandle naphezulu ukuya kumgangathe ongentla, kwaya mbubenzi, benya eyona nxaso lweqokobhe lelwelo.