These are marks on the sides of merchant ships to denote the greatest depth to which they may be safely loaded under various conditions, in accordance with the Ministry of Transport regulations.
La ngamaphawu ecaleni kwenqanawa zorhwebo ezichaza obona bunzulu ezingathi zilayishwe ngokukhuse le kileyo, phantsi kwameko ezithile, ngekungqinelona nemyaqo wemphathiswe wezethutho.