After validating the good agreement between simulated results and observed ones , the characteristics and the distribution rules of tides and tidal currents in the whole seas near to zhejiang are thoroughly analyzed , mainly based on the simulated results , combining with the observed conclusion . the co - tidal and co - range charts , co - current charts , types of tides and tidal currents , distribution of maximum possible tidal range and maximum possible tidal current , phenomenon of diurnal inequality , moving modes of tidal currents , tidal ellipses , distribution of tidal residual currents and the vertical structure of tidal currents and residual currents are investigated respectively . and thereout we draw a series of meaningful conclusions as follows , the main of these are : 1