Je was op zoek naar: drainage (Engels - Xhosa)

air drainage
ukomiswa komoya

curved portion between the bottom and the side shell plating. drainage space within the ship.
igophe eliphakathi kombindi necala lodyobho nokrwece. indawo yokukhuphela amanzi ngaphandle.

a small well fitted in a compartment, usually at the aft end, to facilitate drainage of bilge water
umthombo omncinci olingana kwikhompatimenti, idla ngokuba kumva womphetho wenqanawe owenza kube lula ukomisa amanzi amdaka aqokelelene kumphantsi wenqanawe.

the arch or slope from side to side of a vessel's weather deck for water drainage. also known as round of beam.
igophe okanye ithambeka elisemacaleni omabini omgangatho wemo-zulu wenqanawe ekukhupheni amanzi. ikwaziwa njenge-'round of beam'.

most crude-oil carrying vessels have their pump rooms aft of the cargo spaces to allow a better drainage of the tanks.
ubukrwada obunizi be-oyile ethwalwa ngeenqanawa ezinempompo zamagumbi asemva kwezithuthi zemithwalo ekwizithuba ezivumela ububhetele bofunxo lweetanki.

decks above the waterline are usually cambered (i.e . arched) to aid the drainage of any surface water to the gutters, called waterways, which extend fore and aft at the sides of the decks .
iidekhi ezingaphezulu komgca wamanzi zidla ngokugotywa (lilonke . igophe) ukunceda ukufunxelwa kwamanzi asiwe kwiigathasi, ezibizwa ngokuba ziindlela zamanzi, ezandela ngaphambili nangasemva kumacala edekhi.