The bottom and sides of the holds of merchant ships are usually sheathed with a layer of wooden planks as a protection for the cargo, this sheathing being known as the ceiling .
Umphantsi kunye namacala okubambelela enqanawa zorhwebo adla ngokuba ombathiswe ngumphezulu wamaplanga njengesikhuselo somthwalo, olu lombathiso lwaziwa ngokuba yisilingi.