In addition some shipyards have had building docks that could be used for building tankers with deadweights of 1 million tons available since 1970.
Ukongeza ezinye indawo zokwakhiwa kweenqanawa zazinto zokwakha ezazinokusetyenziswa ekwakheni iinqanawa zokuthutha ipetroyile ezinobunzima bomthwalo wenqanawa besigidi esinye seetoni ezazifumaneka ngo- 1970.