An opening in the lower part of a bulkhead fitted with a sliding water tight gate, or small door, having an operating rod extending to the upper deck or decks. It is used to permit liquid in one compartment to flow into the adjoining compartment.
Umngxuma kwindawo esezantsi onentloko efakwa kwihuku eqinileyo netyibilikayo/ Umnyango omncinci, intambo ende eqinileyo esebenza evelela kumgangatho ongentla okanye kweminye imigangatho. Isetyenziselwa ukuba ivumele into ebumanzi kwigumbi iyivumele iye kwigumbi elidibanisa elinye.