The cofferdam is built up on the coaming, plank by plank, and secured to upright supports fitted all round.
Isithintelo samanzi xa kusakhiwa idama okanye ibrorho sakhiwa kumphetho ophakamileyo wokunqanda amanzi angangeni emigxunyeni ekulayishwa ngayo inqanawa, ngamaplanga, kwaye ibotshelelwe kwizixhasi ezime nkqo ezifakwe ngokujikeleze inqanawa.