U Uhlobo olushushu oluqengqiweImfumba yeShiti leNsimbis, njengesixhobo esitsha sokwakha, sinokusetyenziswa njengokugcina umhlaba, ukugcina amanzi kunye nodonga lokugcina isanti kulwakhiwo lwebhulorho ye-cofferdam, ukufakwa kwemibhobho emikhulu kunye nokwembiwa komsele okwethutyana. Idlala indima ebalulekileyo kubunjineli obufana nodonga olugcinayo, udonga olugcinayo kunye nokhuselo lwe-half kwi-whifi kunye neyadi yokothula. I-Larsen steel sheet pile njengecofferdam ayikho nje eluhlaza, ukhuseleko lokusingqongileyo, kodwa kunye nesantya sokwakha ngokukhawuleza, iindleko eziphantsi zokwakha, kwaye inomsebenzi omhle wokungangeni kwamanzi.