The forces required to tow various types of warships and freighters in calm weather at various speeds can be found from the graph in the figure below.
Amandla afunekayo ekutsaleni iindidi ezahlukeneyo zeenqanawa zokulwa kwakunye neenqanawa zokuthutha impahla kwimozulu ezolileyo kwizantya ezahlukeneyo zingafunyanwa kwisazobe kumzobo ongezantsi.