For the "ballast" voyage the empty tubes are folded up and carried on the towing vessel, which also has the necessary auxiliary equipment for handling the tubes.
Isizinziso sohambo lwenqanawa imibhobho engenanto iyasongwa ithwalwe zizinto ezizitya ezirhuqwayo isincedisi esisixhobo esiyimfuneko sokuphatha le mibhobho