It has been suggested that safe operation of submarine tankers will depend on the availability of sonar sets that can both sound downwards towards the sea bed and upwards to the ice cover.
Yayicetyisiwe into yokuba iindlela zokhuseleko zeenkwili zeenqanawa zokuthutha ipetroli ziyakuxhomekeka kubukho bemixokelelwano yezixhobo zokufumana into ephantsi kwamanzi ngamaza esandi anokuthu avakale ngezantsi ukuya kwintsele yolwandle ukuya ngaphezulu emkhenkceni.