As pointed out in the section "A Shortage of Deep Water", the steel weight increases much more slowly than the deadweight when the size of the ship is increased.
Njengoko sekutshiwo kwicandelo ukushokoxeka kwamanzi anzulu ubunzima, bentsimbi buyanda ngokucothayo kunobunzima obungekhoyo xa ubungakanani benqanawa busandiswa