Finally it must not be forgotten that although the relevant hull elements are comparatively simple to manufacture, more material is required than for an equivalent single-hull ship.
Ekugqibeleni mayingalityalwa into yokuba nangona iimpawu ezingqamene zesiqu senqanawa kulula ukuzenza, izinto zokwenza ziyafumeka kunenqanawa enesiqu esinye esingqinelanayo.