Of all possible submarine cargo vessels a submarine tanker seems likely to prove the simplest to build and the most economical to run.
Kuzo zonke iinkwili zeenqanawa zomthwalo ezikhoyo inkwili yenqanawa yokuthutha ipetroli ibonakala ngathi ingabonakalisa okulula ekwakheni neyona iqoqoshayo enokwenziwa.