Current estimates are that for a given deadweight the cost of construction of a submarine cargo vessel would be between 3 and 5 times that of a normal cargo ship.
Izithekeleli zangoku zezokuba kubunzima bomthwalo wenqanawa onikeziweyo ixabiso lokwakhiwa lenkwili yenqanawa yomthwalo ingaphakathi kwamaxesha amathathu kwakunye namahlanu enqanawa yomthwalo eqhelekileyo.