Every ship must have some sound-making apparatus to give warning of its presence at sea in a fog and to indicate the direction of its movement to other ships that can see it.
Zonke iinqanawa kufuneka zibe nezixhobo ezenza ingxolo ukunika isilumkiso esikhona kulwandle olukwinkungu nokubonisa ikhondo lentshukumo yayo kwezinye iinqanawa ezinokuyibona.