Izindonga zasolwandle ezakhiwe ngasogwini, ziyizakhiwo ezibalulekile zamanzi ukuze zimelane namagagasi, amagagasi noma amagagasi okuvikela ugu.Ama-Breakwaters abuyisela futhi avikele ugu ngokuphazamisa amandla amaza, futhi avumele isihlabathi ukuthi sinqwabelene ngasogwini.
Uma kuqhathaniswa nokugcwaliswa kwamatshe e-tranditonal, amashubhu e-polypropylene geotextile ahlala isikhathi eside anezindleko zokusika zokugcwaliswa esizeni ngokunciphisa ukukhishwa kwempahla nezinto zokuhamba.