On larger vessels white lights must show the whole range of the red and green arcs, and usually two of them are placed 10 to 30 ft. up on the mast.
Kwiinqanawa ezinkulu izibane ezimhlophe mazibonise oluluhlu olubomvu naluhlazo lwesiqingatha sesazinge zidlango kubekwa ezimbini zazo kwi 10 ukuya kwi30ft.