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 .
Amazantsi afakelwe kwisiseko senqanawa, apho andela ngaphandle nangaphakathi kwidekhi engasentla, kwaye xa edibene nezide, enza eyona nkxaso ingundoqo yesigqumo seqokobhe.