Dan buoy to be used as a geographical reference or check, which needs to be more visible and more securely moored than a normal danbuoy
Umqondiso odadayo wengozi oza kusetyenziselwa ukuzekelisa ngokwezelizwe okanye ukukhangela, ukuba ngowuphi ofuna ukubonakaliswa kakhuhle kwaye ubotshelelwe entweni kune-dan yomqondiso odadayo wengozi eqhelekileyo