This is the measure of the total internal volume of a ship reckoned in tons of cubic capacity, and is the usual method of expressing the tonnage of merchant ships.
Lo ngumlungiselelo wawo wonke umthwalo wangaphakathi wenqanawa obalwe ngethoni ezizithyubhikhi ubukhulu, ikwayindlela eqhelekileyo yokubonisa umthwalo wethoni yenqanawa zorhwebo.