To be emphasized is the need for a full range of visibility, because a blind arc of only a few degrees may hide a vessel bearing down on you and this vessel may remain in that blind arc up to the moment of impact.
Kugxininiso kukho isidingo soluhlu olubonakalayo kuba ezingabonakaliyo zikwinqanawa ezimbalwa ezingazimisela inqanawa ihlale ingaboni kude kube ngumzuzu wempumelelo