The line on the "lines plan" of a ship representing the intersection of the ship's form with the plane of the water's surface when the vessel is floating with her designed load on board. Also applied to the actual intersection of the surface of the water with a vessel's side.
Umgca okwisakhelo senqanawe obonisa ukudibana kwesiqu senqanawe kunye nomphezulu wamanzi xa inqanawe idada kunye nohlobo lomthwalo olugqunywe ngamaplanga.