How Tides are useful in navigation?

Tidal flows as well as Tidal heights are of profound importance in navigation and very significant errors in position will occur if they are not taken into account. Many rivers and harbours have a shallow ” bar” at the entrance which will prevent some boats with significant draught from entering at certain states of the tide. The timings and velocities of tidal flow can be found by looking at a tidal chart or tidal stream atlas for the particular local area.