It is needed both for maintaining a constant check on the agreement between the ship's position and the optimum course and also for gaining a general view of the prevailing traffic conditions.
Iyafuneka ukugcina ukhangelo olungaguqukiyo kwisivumelwano phakathi kwendawo yenqanawa kwakunye neyona ndlela kwakunye nokufamana izimvo jikelele zokoyisa kwemeko zezihamba ndlela.