The tank-tops of merchant vessels are constructed and tested to withstand a pressure-head of water equal to that on the bottom-plating when the ship is fully loaded.
Imiphezulu yetanki kwiinqanawa zorhwebo yakhiwe yahlolwa ukuze imelane nentloko xinzelelo lwamanzi alingana kolu lolwaleko olungaphantsi xa inqanawa igcwele.