If ballast is taken on so that the draught increases a belt of clear water will appear between the hull and the ice field.
Ukuba izinto ezinzima zilayishelwa ukuzinzisa inqanawa ziye zafakwa njalo, njalo ukuze umsinga womoya wande ibhanti yocwengo lwamanzi izakubonakala phakati kwesiqu senqanawa kwakunye namasimi omkhenkce.