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

scouring away the sea bed.
ukukhukulisa intsele yolwandle.

timber and board constructions between high and low water marks to prevent coast erosion by the scouring action of the sea.
amaplanga kunye nebhodi zokwakha phakathi kophawu lobuphezulu nasezantsi samanzi ukukhusela ukhukuliseko lonxweme ngenxa ypkukuliseko olwenziwa lulwandle.

groins are timber and board constructions between high and low water marks to prevent coast erosion by the scouring action of the sea.
igroins sisakhiwe samaplanga nee boardi phakathi kophawu duphezulu ncluphantsi lwamanzi, ukunqanda ukhukuliseko elunxwemeni elinekubangwa sisenze sokhuhlano.

if the dredging craft are held at too fine an angle, the flow of water will be deflected along the side and bilges of the ship instead of scouring in underneath her bottom.
ukuba inqwelo ehamba elwandle egutyulayo ingakwimibhobho, ukuhamba kwamanzi kuya kuphambukiselwa ngasecaleni nangakwimiphantsi yenqanawa endaweni yokuba akhuhle ngaphantsi komzantsi wayo.

for centuries these estuaries were regarded as one of the major advantages for a port, since the natural scouring effect of the river guaranteed that adequate depths of water would extend far inland.
kwiminyaka emininzi la machweba omlambo ayethathwa ngokuba zezona zinto zilungileyo kumazibuko enqanawa sukela oko izikhukulisi zendalo ziqaphele lo mlambo ziqinisekisile ukuba ubunzulu oboneleyo bamanzi buza kwandela kude emhlabeni.