Similar keels are fitted to boats to reduce leeway, to protect bottom planking when on ground and to form hand grips in event of capsizing.
Iziseko zenqanawa eziyeleleneyo zifakwa kumaphenyane ukunciphisa ushenxo, ukukhusela umgangatho oneplanga ophantsi xa ibetheka kunye nokwenza izandla zokubambelela kwisiganeko sokuphethuka.