The oceans themselves are deep enough to impose no limits on the size of ships, but every ship has to enter a port or at least find a mooring on the Continental Shelf close to the coast.
Ulwandlekazi ngokunokwalo olunzulu ngokwaneleyo ukungabeki ngaphezulu imilinganiselo okanye imiqathango kubungakanani beenqanawa, kodwa zonke iinqanawa mazingene elunxwemeni okanye zifumane indawo yokubophelela inqanawa kwishelufu yekontinentali ngaselunxwemeni.