This is not achieved in every case by using tankers of 500,000 to 1,000,000 tons deadweight.
Le nto ayiphunyezwa kuzo zonke ezi meko ngokusebenzisa iinqanawa zokuthutha ipetroyile yamakhulu amahlanu amawaka ukuya kwisigidi setoni sobunzima bomthwalo wenqanawa.